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2014 Microchip Technology Inc. DS50002263B dsPIC ® DSC Signal Board User’s Guide

dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

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Page 1: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

2014 Microchip Technology Inc. DS50002263B

dsPIC® DSC Signal Board

User’s Guide

Page 2: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

DS50002263B-page 2 2014 Microchip Technology Inc.

Information contained in this publication regarding deviceapplications and the like is provided only for your convenienceand may be superseded by updates. It is your responsibility toensure that your application meets with your specifications.MICROCHIP MAKES NO REPRESENTATIONS ORWARRANTIES OF ANY KIND WHETHER EXPRESS ORIMPLIED, WRITTEN OR ORAL, STATUTORY OROTHERWISE, RELATED TO THE INFORMATION,INCLUDING BUT NOT LIMITED TO ITS CONDITION,QUALITY, PERFORMANCE, MERCHANTABILITY ORFITNESS FOR PURPOSE. Microchip disclaims all liabilityarising from this information and its use. Use of Microchipdevices in life support and/or safety applications is entirely atthe buyer’s risk, and the buyer agrees to defend, indemnify andhold harmless Microchip from any and all damages, claims,suits, or expenses resulting from such use. No licenses areconveyed, implicitly or otherwise, under any Microchipintellectual property rights.

Note the following details of the code protection feature on Microchip devices:

• Microchip products meet the specification contained in their particular Microchip Data Sheet.

• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions.

• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

• Microchip is willing to work with the customer who is concerned about the integrity of their code.

• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of ourproducts. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such actsallow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified.

QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV

== ISO/TS 16949 ==

Trademarks

The Microchip name and logo, the Microchip logo, dsPIC, FlashFlex, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART, PIC32 logo, rfPIC, SST, SST Logo, SuperFlash and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MTP, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A.

Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.

Analog-for-the-Digital Age, Application Maestro, BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, SQI, Serial Quad I/O, Total Endurance, TSHARC, UniWinDriver, WiperLock, ZENA and Z-Scale are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

SQTP is a service mark of Microchip Technology Incorporated in the U.S.A.

GestIC and ULPP are registered trademarks of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries.

All other trademarks mentioned herein are property of their respective companies.

© 2014, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.

Printed on recycled paper.

ISBN: 978-1-63276-235-1

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Object of Declaration: dsPIC® DSC Signal Board User’s Guide

2014 Microchip Technology Inc. DS50002263B-page 3

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dsPIC® DSC Signal Board

NOTES:

DS50002263B-page 4 2014 Microchip Technology Inc.

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dsPIC® DSC SIGNAL BOARDUSER’S GUIDE

Table of Contents

Preface ........................................................................................................................... 7

Chapter 1. Introduction1.1 Overview ...................................................................................................... 111.2 dsPIC DSC Signal Board Features .............................................................. 111.3 Functions ...................................................................................................... 121.4 Block Diagram .............................................................................................. 13

Chapter 2. Board Interface Description2.1 Introduction ................................................................................................... 152.2 Highlights ...................................................................................................... 152.3 Board Connectors and Headers ................................................................... 152.4 User Interface Hardware .............................................................................. 332.5 Board Test Points ......................................................................................... 36

Chapter 3. Hardware Description3.1 Introduction ................................................................................................... 393.2 Highlights ...................................................................................................... 393.3 Power Supply Circuit .................................................................................... 413.4 Voltage Reference Circuit ............................................................................ 433.5 Isolated USB Interface ................................................................................. 443.6 PIM Header Signals ..................................................................................... 453.7 Supply Voltage and Ground Connection ...................................................... 48

Appendix A. Schematics and LayoutA.1 Introduction .................................................................................................. 49A.2 Board Schematics and Layout ..................................................................... 49

Appendix B. Electrical SpecificationsB.1 Introduction .................................................................................................. 57

Appendix C. Design CalculationsC.1 Introduction .................................................................................................. 59C.2 Design of Power Supply Circuit ................................................................... 59

Worldwide Sales and Service .................................................................................... 62

2014 Microchip Technology Inc. DS50002263B-page 5

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dsPIC® DSC Signal Board

NOTES:

DS50002263B-page 6 2014 Microchip Technology Inc.

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dsPIC® DSC SIGNAL BOARD

USER’S GUIDE

Preface

INTRODUCTION

This chapter contains general information that will be useful to know before using the dsPIC® DSC Signal Board. Items discussed in this chapter include:

• Document Layout• Conventions Used in this Guide• Recommended Reading• The Microchip Web Site• Development Systems Customer Change Notification Service• Customer Support• Document Revision History

DOCUMENT LAYOUT

This document describes how to use the dsPIC DSC Signal Board as a development tool to emulate and debug firmware on a target board. This user’s guide is composed of the following chapters:

• Chapter 1. “Introduction” provides the features and functions of the dsPIC DSC Signal Board.

• Chapter 2. “Board Interface Description” describes the dsPIC DSC Signal Board input and output interfaces.

• Chapter 3. “Hardware Description” provides the hardware descriptions of the dsPIC DSC Signal Board.

• Appendix A. “Schematics and Layout” provides board layouts and detailed schematics of the dsPIC DSC Signal Board.

• Appendix B. “Electrical Specifications” provides the electrical specifications of the dsPIC DSC Signal Board.

• Appendix C. “Design Calculations” provides the design calculations of the dsPIC DSC Signal Board.

NOTICE TO CUSTOMERS

All documentation becomes dated, and this manual is no exception. Microchip tools and documentation are constantly evolving to meet customer needs, so some actual dialogs and/or tool descriptions may differ from those in this document. Please refer to our web site (www.microchip.com) to obtain the latest documentation available.

Documents are identified with a “DS” number. This number is located on the bottom of each page, in front of the page number. The numbering convention for the DS number is “DSXXXXXXXXA”, where “XXXXXXXX” is the document number and “A” is the revision level of the document.

For the most up-to-date information on development tools, see the MPLAB® IDE online help. Select the Help menu, and then Topics to open a list of available online help files.

2014 Microchip Technology Inc. DS50002263B-page 7

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dsPIC® DSC Signal Board

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

WARRANTY REGISTRATION

Please complete the enclosed Warranty Registration Card and mail it promptly. Sending in the Warranty Registration Card entitles users to receive new product updates. Interim software releases are available at the Microchip web site.

DOCUMENTATION CONVENTIONS

Description Represents Examples

Italic characters Referenced books MPLAB® IDE User’s Guide

Emphasized text ...is the only compiler...

Initial caps A window the Output window

A dialog the Settings dialog

A menu selection select Enable Programmer

Quotes A field name in a window or dialog

“Save project before build”

Underlined, italic text with right angle bracket

A menu path File>Save

Bold characters A dialog button Click OK

A tab Click the Power tab

Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>

Plain Courier New Sample source code #define START

Filenames autoexec.bat

File paths c:\mcc18\h

Keywords _asm, _endasm, static

Command-line options -Opa+, -Opa-

Bit values 0, 1

Constants 0xFF, ‘A’

Italic Courier New A variable argument file.o, where file can be any valid filename

Square brackets [ ] Optional arguments mcc18 [options] file [options]

Curly brackets and pipe character: { | }

Choice of mutually exclusive arguments; an OR selection

errorlevel {0|1}

Ellipses... Replaces repeated text var_name [, var_name...]

Represents code supplied by user

void main (void){ ...}

Notes A Note presents information that we want to re-emphasize, either to help you avoid a common pitfall or to make you aware of operating differences between some device family members. A Note can be in a box, or when used in a table or figure, it is located at the bottom of the table or figure. Note 1: This is a note used in a

table.

Note: This is a standard note box.

CAUTION

This is a caution note.

DS50002263B-page 8 2014 Microchip Technology Inc.

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Preface

RECOMMENDED READING

This user’s guide describes how to use the starter kit. The following Microchip documents are available and recommended as supplemental reference resources.

MPLAB® X IDE User’s Guide (DS50002027)

This user’s guide is a comprehensive guide that describes installation and features of Microchip’s MPLAB X Integrated Development Environment (IDE), as well as the editor and simulator functions in the MPLAB X IDE environment.

Readme Files

For the latest information on using other tools, read the tool-specific Readme files in the Readme subdirectory of the MPLAB X IDE installation directory. The Readme files contain updated information and known issues that may not be included in this user’s guide.

MPLAB® XC16 Assembler, Linker and Utilities User’s Guide (DS52106)

This user’s guide describes how to use GNU language tools to write code for 16-bit applications.

MPLAB XC16 C Compiler User’s Guide (DS50002071)

This user’s guide describes how to use the 16-bit MPLAB XC16 C Compiler. Please visit www.microchip.com/compilers for more information.

dsPIC33EV256GM106 5V Motor Control Plug-In Module (PIM) Information Sheet (DS50002225)

This information sheet provides information specific to the dsPIC33EV256GM106 5V Motor Control Plug-In Module (PIM).

dsPIC33EP512GM710 Plug-In Module (PIM) Information Sheet for Single-Dual Motor Control (DS50002216)

This information sheet provides information specific to the dsPIC33EP512GM710 Plug-In Module (PIM) for Single-Dual Motor Control.

Motor Control 10-24V Driver Board (Dual/Single) User’s Guide (DS50002261)

This user’s guide describes how to use Microchip’s Motor Control 10-24V Driver Board (Dual/Single).

THE MICROCHIP WEB SITE

Microchip provides online support via our web site at http://www.microchip.com. This web site makes files and information easily available to customers. Accessible by most Internet browsers, the web site contains the following information:

• Product Support – Data sheets and errata, application notes and sample programs, design resources, user’s guides and hardware support documents, latest software releases and archived software

• General Technical Support – Frequently Asked Questions (FAQs), technical support requests, online discussion groups, Microchip consultant program member listings

• Business of Microchip – Product selector and ordering guides, latest Microchip press releases, listings of seminars and events; and listings of Microchip sales offices, distributors and factory representatives

2014 Microchip Technology Inc. DS50002263B-page 9

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dsPIC® DSC Signal Board

DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE

Microchip’s customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest.

To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions.

The Development Systems product group categories are:

• Compilers – The latest information on Microchip C compilers and other language tools

• Emulators – The latest information on the Microchip in-circuit emulator, MPLAB REAL ICE™

• In-Circuit Debuggers – The latest information on the Microchip in-circuit debugger, MPLAB ICD 3

• MPLAB X IDE – The latest information on Microchip MPLAB X IDE, the Windows® Integrated Development Environment for development systems tools

• Programmers – The latest information on Microchip programmers including the PICkit™ 3 development programmer

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

Customers should contact their distributor, representative or field application engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document.

Technical support is available through the web site at: http://support.microchip.com

DOCUMENT REVISION HISTORY

Revision A (April 2014)

This is the initial release of this document.

Revision B (May 2014)

• Note added to Figure C-1.

• Note reference added to Section C.2.1 “First Stage of Power Supply Circuit Design” in Appendix C. “Design Calculations”.

• Changes in values made to Table C-2.

DS50002263B-page 10 2014 Microchip Technology Inc.

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dsPIC® DSC SIGNAL BOARD

USER’S GUIDE

Chapter 1. Introduction

1.1 OVERVIEW

This chapter describes the features and functions of the dsPIC® DSC Signal Board.

The dsPIC DSC Signal Board is a general purpose development board which provides the dsPIC DSC signal connections to application boards, along with user interfaces. The board supports both +3.3V and +5V operated devices for various applications. The board has some frequently used user interface features, along with two major connec-tors: a 120-pin connector and a 60-pin connector to enable connection to plug-in boards. The 120-pin connector is connected to all PIM header pins, power supply sig-nals and various grounds. The 60-pin connector allows expansion for communication, enhanced interfacing and light power applications.

1.2 dsPIC DSC SIGNAL BOARD FEATURES

The dsPIC DSC Signal Board is shown in Figure 1-1. The board includes these key features:

• Interfaces:

- 120-pin power board interface connector for power application board (J13)

- 60-pin expansion connector for add-on boards (J7)

- 30-pin connector for signal monitoring or expansion (J4)

- 30-pin connector for signal monitoring or expansion (J5)

- 100/105-pin PIM header (U2A, U2B, U2C, U2D, U2E) support microcontrollerand dsPIC DSC’s Plug-in Module (PIM) with internal or external op ampconfiguration

• User Interfaces:

- Reset push button (SW0)

- Four push buttons (SW1-SW4)

- Two 10 k potentiometers (POT1 and POT2)

- Four LED indicators for debugging (LD1-LD4)

- Two power-on status LEDs (LD5, LD6)

- Two LED indicators for USB communications (LD7, LD8)

• Communication Ports:

- UART communication through USB (isolated) (J3)

- SPI interface (J8)

- PICkit™ serial analyzer (SPI protocol) interface (J10)

- PICkit serial analyzer interface (I2C™ protocol) (J12)

• Power Supply Connectors:

- 24V power input connector (J17)

• Programming Connectors:

- ICSP™ connector for programming the dsPIC DSC or microcontroller (J1)

- RJ11 connector for programming the dsPIC DSC or microcontroller (J2)

2014 Microchip Technology Inc. DS50002263B-page 11

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dsPIC® DSC Signal Board

• Test Points:

- 20 test points (TP1-TP20) provided on the board for debugging and measurement

• Power:

- DC+, EXT DC+, DC24V, +5V, DVDD, AVDD

• Ground:

- Digital Ground (DGND), Analog Ground (AGND), Power Ground (PGND)

FIGURE 1-1: dsPIC® DSC SIGNAL BOARD

1.3 FUNCTIONS

The dsPIC DSC Signal Board has the following functions:

• Supports application power boards connected to the J13 and J7 connectors

• Experiments with functionality of devices on the PIM header

• Provides on-board user interface-like switches, LEDs and potentiometers

• Communicates with a host computer or external device through isolated USB, I2Cand SPI interfaces

• Provides auxiliary power supply (DVDD = +3.3V or +5V) to various devices usedon the dsPIC DSC Signal Board, as well as plug-in boards

• Provides a prototyping area for user circuit development or implementation

®

DS50002263B-page 12 2014 Microchip Technology Inc.

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Introduction

1.4 BLOCK DIAGRAM

A simplified block diagram of the dsPIC DSC Signal Board is shown in Figure 1-2.

FIGURE 1-2: dsPIC® DSC SIGNAL BOARDBLOCK DIAGRAM

Power Supply 2

(selectable)

4 LEDs

Two 10 kPOTs

SPI Header(J8) (J1, J2)

PIM Header U2

(105/100 Pins)

60-Pin

C

O

N

N

E

C

T

O

R

(J7)

Input Jack(J17)

120-Pin Connector (J13)

+5V

DVDDDC+

DVDD

DVDD

+5V

+5V

DC+

DC+

Power Supply 1(Fixed +5V)

U

2

A

ICSP Interface

SW0 ResetU2D

U

2

C

U2B

U

2

E

DVDD = +3.3V/+5V

Isolated USB/UARTInterface (J3)

ReferenceVoltage

PICkit™ Serial

Analyzer I2C™/SPIInterface (J10/J12)

SW1

SW2

SW3

SW4

Low-Pass Filters

2014 Microchip Technology Inc. DS50002263B-page 13

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dsPIC® DSC Signal Board

NOTES:

DS50002263B-page 14 2014 Microchip Technology Inc.

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dsPIC® DSC SIGNAL BOARD

USER’S GUIDE

Chapter 2. Board Interface Description

2.1 INTRODUCTION

This chapter provides a more detailed description of the input and output interfaces of the dsPIC® DSC Signal Board.

2.2 HIGHLIGHTS

This chapter covers the following topics:

• Board Connectors and Headers

• User Interface Hardware

• Board Test Points

2.3 BOARD CONNECTORS AND HEADERS

The dsPIC DSC Signal Board contains various connectors and headers.

The on-board hardware connectors are provided in Table 2-1. Figure 2-1 shows different on-board connectors.

TABLE 2-1: BOARD CONNECTORS

DesignatorNumber of

PinsDescription

J1 6 ICSP™ connector for programming a dsPIC® DSC or microcontroller

J2 6 RJ11, 6-pin connector for programming a dsPIC DSC or microcontroller

J3 5 Isolated USB interface port

J4 30 Odd number pin connection from connector, J7(1)

J5 30 Even number pin connection from connector, J7(1)

J6 4 Isolated UART interface

J7 60 Connector for expansion board interface(1)

J8 6 Header for SPI interface

J9 2 UART TX/RX inputs

J10 6 Header for PICkit™ serial analyzer (SPI interface)

J12 6 Header for PICkit serial analyzer (I2C™ interface)

J13 120 Power board interface connector for application boards

J17 2 Input power supply connector (24V)

Note 1: See Table 2-12 and Table 2-14 for connection details.

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dsPIC® DSC Signal Board

FIGURE 2-1: dsPIC® DSC SIGNAL BOARD CONNECTORS

The on-board headers and connectors are described in the following sections:

• PIM Header

• PICkit Programming Header (J1)

• MPLAB ICD 3 or REAL ICE™ In-Circuit Emulator Connector (J2)

• Isolated USB Interface (J3)

• Alternate USB/UART Interface (J6)

• SPI Interface Connector (J8)

• Additional UART TX/RX Inputs (J9)

• PICkit Serial Analyzer SPI Interface

• Input Power Connector (J17)

• Power Board Interface Connector (J13)

• Expansion Board Connector (J4, J5 and J7)

J17

J1

J12

J10

J8

J9

J4

J5

J7

J13

J2 J3

J6

®

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Board Interface Description

2.3.1 PIM Header

The dsPIC DSC Signal Board has been designed to accommodate detachable Plug-in Modules (PIMs). The board supports 105-pin PIMs and it is also backward compatible with some of the 100-pin PIMs. The PIM pinout and function on the dsPIC DSC Signal Board, and the respective connectors are provided in Table 2-2.

TABLE 2-2: dsPIC® DSC SIGNAL BOARD PIM PINOUT FUNCTIONALITY

PIMPin #

Signal Name Functional Description FilterConnectors

J13 J7 J4 J5

1 PIM:01_PWR:B8_EXP:01 Debug LED 1 No B8 01 01 —

2 DVDD Digital Voltage (+3.3V/+5V) — — — — —

3 PIM:03_PWR:A8_EXP:49 — No A8 49 49 —

4 PIM:04_PWR:C7_EXP:02 — No C7 02 — 02

5 PIM:05_PWR:B7_EXP:03 — No B7 03 03 —

6 PIM:06_PWR:A7_EXP:04 — No A7 04 — 04

7 PIM:07_PWR:C6_EXP:05 — No C6 05 05 —

8 PIM:08_PWR:B6_EXP:06 — No B6 06 — 06

9 PIM:09_PWR:A6_EXP:07 — No A6 07 07 —

10 PIM:10_PWR:C5 — No C5 — — —

11 PIM:11_PWR:B5_EXP:08_FLT — Yes B5 08 — 08

12 PIM:12_PWR:A5_EXP:09 — No A5 09 09 —

13 PIM:13 (MCLR) Device Master Clear (MCLR) No — 25 25 —

14 PIM:14_PWR:A38_FLT — Yes A38 — — —

15 DGND Digital Ground — — — — —

16 DVDD Digital Voltage (+3.3V/+5V) — — — — —

17 PIM:17_PWR:C37_FLT — Yes C37 — — —

18 PIM:18_PWR:B37_EXP:55 — No B37 55 55 —

19 PIM:19_PWR:A37_EXP:10 — No A37 10 — 10

20 PIM:20_PWR:C36_FLT — Yes C36 — — —

21 PIM:21_PWR:B36_FLT — Yes B36 — — —

22 PIM:22_PWR:A36_FLT — Yes A36 — — —

23 PIM:23_PWR:C35_EXP:11_FLT Potentiometer 2 Yes C35 11 11 —

24 PIM:24_PWR:B35_FLT — Yes B35 — — —

25 PIM:25_PWR:A35_FLT — Yes A35 — — —

26 PIM:26_PWR:C34_EXP:41 Device Programming Clock Line (PGC) No C34 41 41 —

27 PIM:27_PWR:B34_EXP:42 Device Programming Data Line (PGD) No B34 42 — 42

28 PIM:28_PWR:A34 Reference Voltage (VREF) No A34 — — —

29 PIM:29_PWR:C33_EXP:12 — No C33 12 — 12

30 AVDD Analog Voltage (+3.3V/+5V) — — — — —

31 AGND Analog Ground — — — — —

32 PIM:32_PWR:B33_EXP:13_FLT Potentiometer 1 Yes B33 13 13 —

Note 1: Signal PIM:69 has two functions. This signal is connected to Switch S1 and the PICkit™ serial analyzer header, J12. When connector J15 is open, PIM:69 is connected to the PICkit serial analyzer I2C™ interface. However, when connector J15 is shorted, PIM:69 is connected to switch SW1.

2: Signal PIM:49 has two functions. This signal is connected to the UART Transmit Pin 6 of the digital isolator, U3, and the PICkit serial analyzer header, J12. When connector J11 is open, PIM:49 is connected to the PICkit serial analyzer I2C interface. However, when connector J11 is shorted, PIM:49 is connected to the TX pin of the digital isolator, U3.

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dsPIC® DSC Signal Board

33 PIM:33_PWR:A33_EXP:14 Debug LED 3 No A33 14 — 14

34 PIM:34_PWR:C32_EXP:15 Debug LED 4 No C32 15 15 —

35 PIM:35_PWR:B32_FLT — Yes B32 — — —

36 DGND Digital Ground — — — — —

37 DVDD Digital Voltage (+3.3V/+5V) — — — — —

38 PIM:38_PWR:A32_EXP:16 — No A32 16 — 16

39 PIM:39_PWR:C31_EXP:17 — No C31 17 17 —

40 PIM:40_PWR:B31_EXP:18 Push Button SW3 No B31 18 — 18

41 PIM:41_PWR:A31_EXP:56 Push Button SW4 No A31 56 — 56

42 PIM:42_PWR:C29 — No C29 — — —

43 PIM:43_PWR:B29 — No B29 — — —

44 PIM:44_PWR:A29 — No A29 — — —

45 DGND Digital Ground — — — — —

46 DVDD Digital Voltage (+3.3V/+5V) — — — — —

47 PIM:47_PWR:C28_EXP:19 — No C28 19 19 —

48 PIM:48_PWR:B28_EXP:20 — No B28 20 — 20

49 PIM:49_PWR:A28_EXP:21(2) UART Receive/I2C PICkit Interface No A28 21 21 —

50 PIM:50_PWR:C27_EXP:22 UART Transmit No C27 22 — 22

51 PIM:51_PWR:B27_EXP:58 — No B27 58 — 58

52 PIM:52_PWR:A27_EXP:59 — No A27 59 59 —

53 PIM:53_PWR:C26 — No C26 — — —

54 PIM:54_PWR:B26_FLT — Yes B26 — — —

55 PIM:55_PWR:A26_FLT — Yes A26 — — —

56 PIM:56_PWR:C25_FLT — Yes C25 — — —

57 PIM:57_PWR:B25_FLT — Yes B25 — — —

58 PIM:58_PWR:A25 — No A25 — — —

59 PIM:59_PWR:B24_EXP:57 Debug LED 2 No B24 57 57 —

60 PIM:60_PWR:A24_EXP:60 — No A24 60 — 60

61 PIM:61_PWR:C23_EXP:24 — No C23 24 — 24

62 DVDD Digital Voltage (+3.3V/+5V) — — — — —

63 PIM:63 (OSC1) Crystal Oscillator In (OSC1) — — — — —

64 PIM:64 (OSC2) Crystal Oscillator Out (OSC2) — — — — —

65 DGND Digital Ground — — — — —

66 PIM:66_PWR:C22_FLT — Yes C22 — — —

67 PIM:67_PWR:B22_FLT — Yes B22 — — —

68 PIM:68_PWR:A22 — No A22 — — —

69 PIM:69_PWR:A15_EXP:28_FLT_PICkit(1) Push Button SW1/I2C PICkit Interface Yes A15 28 — 28

70 PIM:70_PWR:A21 — No A21 — — —

TABLE 2-2: dsPIC® DSC SIGNAL BOARD PIM PINOUT FUNCTIONALITY (CONTINUED)

PIMPin #

Signal Name Functional Description FilterConnectors

J13 J7 J4 J5

Note 1: Signal PIM:69 has two functions. This signal is connected to Switch S1 and the PICkit™ serial analyzer header, J12. When connector J15 is open, PIM:69 is connected to the PICkit serial analyzer I2C™ interface. However, when connector J15 is shorted, PIM:69 is connected to switch SW1.

2: Signal PIM:49 has two functions. This signal is connected to the UART Transmit Pin 6 of the digital isolator, U3, and the PICkit serial analyzer header, J12. When connector J11 is open, PIM:49 is connected to the PICkit serial analyzer I2C interface. However, when connector J11 is shorted, PIM:49 is connected to the TX pin of the digital isolator, U3.

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Board Interface Description

71 PIM:71_PWR:B19_FLT — Yes B19 — — —

72 PIM:72_PWR:A19 — No A19 — — —

73 PIM:73_PWR:C18_FLT — Yes C18 — — —

74 PIM:74_PWR:B18_FLT — Yes B18 — — —

75 DGND Digital Ground - — — —

76 PIM:76_PWR:B17_FLT — Yes B17 — — —

77 PIM:77_PWR:A17_FLT — Yes A17 — — —

78 PIM:78_PWR:C16_EXP:26 PICkit SPI Interface Data Out No C16 26 — 26

79 PIM:79_PWR:B16_FLT — Yes B16 — — —

80 PIM:80_PWR:A16_EXP:27 — No A16 27 27 —

81 PIM:81_PWR:C15_FLT — Yes C15 — — —

82 PIM:82_PWR:B15 — No B15 — — —

83 PIM:83_PWR:B21_FLT — Yes B21 — — —

84 PIM:84_PWR:C14_EXP:29_FLT Push Button SW2 Yes C14 29 29 —

85 PIM:85_PWR:B14 — No B14 — — —

86 DVDD Digital Voltage (+3.3V/+5V) — — — — —

87 PIM:87_PWR:A14_EXP:30 PICkit SPI Clock No A14 30 — 30

88 PIM:88_PWR:C13_EXP:31 PICkit SPI Interface Data In No C13 31 31 —

89 PIM:89_PWR:B13 — No B13 — — —

90 PIM:90_PWR: A13 — No A13 — — —

91 PIM:91_PWR:C12_EXP:32 PICkit SPI Interface CS No C12 32 — 32

92 PIM:92_PWR:B12 — No B12 — — —

93 PIM:93_PWR:A12_EXP:46 — No A12 46 — 46

94 PIM:94_PWR:C11_EXP:45 — No C11 45 45 —

95 PIM:95_PWR:B11 — No B11 — — —

96 PIM:96_PWR:A11 — No A11 — — —

97 PIM:97_PWR:C9_EXP:23_FLT — Yes C9 23 23 —

98 PIM:98_PWR:B9_EXP:48 — No B9 48 — 48

99 PIM:99_PWR:A9_EXP:47 — No A9 47 47 —

100 PIM:100_PWR:C8_EXP:50 — No C8 50 — 50

101 PIM:101 Reference Voltage (VREF) No C24 — — —

102 PIM:102 Reference Voltage (VREF) No C21 — — —

103 PIM:103 Reference Voltage (VREF) No C19 — — —

104 PIM:104 Reference Voltage (VREF) No A18 — — —

105 PIM:105_PWR:C17 — No C17 — — —

TABLE 2-2: dsPIC® DSC SIGNAL BOARD PIM PINOUT FUNCTIONALITY (CONTINUED)

PIMPin #

Signal Name Functional Description FilterConnectors

J13 J7 J4 J5

Note 1: Signal PIM:69 has two functions. This signal is connected to Switch S1 and the PICkit™ serial analyzer header, J12. When connector J15 is open, PIM:69 is connected to the PICkit serial analyzer I2C™ interface. However, when connector J15 is shorted, PIM:69 is connected to switch SW1.

2: Signal PIM:49 has two functions. This signal is connected to the UART Transmit Pin 6 of the digital isolator, U3, and the PICkit serial analyzer header, J12. When connector J11 is open, PIM:49 is connected to the PICkit serial analyzer I2C interface. However, when connector J11 is shorted, PIM:49 is connected to the TX pin of the digital isolator, U3.

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dsPIC® DSC Signal Board

2.3.2 PICkit Programming Header (J1)

A 6-pin header J1 connects the MPLAB PICkit 3 development programmer to the dsPIC DSC or microcontroller for programming and debugging (see Table 2-3).

2.3.3 MPLAB ICD 3 or REAL ICE™ In-Circuit Emulator Connector (J2)

An RJ11 female connector J2 connects the MPLAB In-Circuit Debugger/Emulator (MPLAB ICD 3 or REAL ICE) to the dsPIC DSC or microcontroller for programming and debugging (see Table 2-4).

2.3.4 Isolated USB Interface (J3)

The dsPIC DSC Signal Board uses an on-board MCP2200 device (see U2 in Figure A-3) as a bridge between the UART and USB (see Table 2-5).

TABLE 2-3: PICkit™ PROGRAMMING HEADER (J1) PIN DESCRIPTION

Pin # Signal Name Pin Description

1 PIM:13 (MCLR) Device Master Clear (MCLR)

2 DVDD Digital Supply Voltage

3 DGND Digital Ground

4 PIM:27_PWR:B34_EXP:42 Device Programming Data Line (PGD)

5 PIM:26_PWR:C34_EXP:41 Device Programming Clock Line (PGC)

6 No Connection —

TABLE 2-4: MPLAB® ICD 3/REAL ICE™ CONNECTOR (J2) PIN DESCRIPTION

Pin # Signal Name Pin Description

1 PIM:13 (MCLR) Device Master Clear (MCLR)

2 DVDD Digital Supply Voltage

3 DGND Digital Ground

4 PIM:27_PWR:B34_EXP:42 Device Programming Data Line (PGD)

5 PIM:26_PWR:C34_EXP:41 Device Programming Clock Line (PGC)

6 No Connection —

TABLE 2-5: ISOLATED USB INTERFACE (J3) PIN DESCRIPTION

Pin # Signal Name Pin Description

0 No Connection Body Connection

1 5V_USB USB +5V DC

2 USB_N USB Data-

3 USB_P USB Data+

4 No Connection —

5 GND_USB USB Ground

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Board Interface Description

2.3.5 Alternate USB/UART Interface (J6)

A 4-pin header J6 provides a provision to bypass the MCP2200 device (see U3 in Figure A-3) and connect an alternate UART/USB interface device (see Table 2-6).

2.3.6 SPI Interface Connector (J8)

A 6-pin header J8 provides the connection for the Serial Peripheral Interface (SPI) communication (see Table 2-7).

2.3.7 Additional UART TX/RX Inputs (J9)

A 2-pin header, J9, connects the input of the digital isolator, ADUM1201CRZ (see U3 in Figure A-3). Connector J9 can be used to connect external provided UART signals TX/RX (see Table 2-8).

2.3.8 PICkit Serial Analyzer SPI Interface

A 6-pin header J10 connects the PICkit serial analyzer to a dsPIC DSC or microcontroller supporting SPI protocol (see Table 2-9).

TABLE 2-6: ALTERNATE USB/UART INTERFACE (J6) PIN DESCRIPTION

Pin # Signal Name Pin Description

1 5V_USB USB +5V DC

2 MCP2200_RX Isolated UART Receive

3 MCP2200_TX Isolated UART Transmit

4 GND_USB USB Ground

TABLE 2-7: SPI INTERFACE CONNECTOR (J8) PIN DESCRIPTION

Pin # Signal Name Pin Description

1 DVDD Digital Supply Voltage

2 DGND Digital Ground

3 DGND Digital Ground

4 PIM:87_PWR:A14_EXP:30 SPI Clock

5 PIM:91_PWR:C12_EXP:32 SPI Interface CS

6 PIM:88_PWR:C13_EXP:31 SPI Interface Data

TABLE 2-8: ADDITIONAL UART TX/RX INPUTS (J9) PIN DESCRIPTION

Pin # Signal Name Pin Description

1 PIM:49_PWR:A28_EXP:21 UART Receive

2 PIM:50_PWR:C27_EXP:22 UART Transmit

TABLE 2-9: PICkit™ SERIAL ANALYZER SPI INTERFACE (J10) PIN DESCRIPTION

Pin # Signal Name Pin Description

1 PIM:91_PWR:C12_EXP:32 PICkit SPI Interface CS

2 DVDD Digital Supply Voltage

3 DGND Digital Ground

4 PIM:88_PWR:C13_EXP:31 PICkit SPI Interface Data In

5 PIM:87_PWR:A14_EXP:30 PICkit SPI Clock

6 PIM:78_PWR:C16_EXP:26 PICkit SPI Interface Data Out

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dsPIC® DSC Signal Board

2.3.9 PICkit Serial Analyzer I2C Interface (J12)

A 6-pin header J12 connects the MPLAB PICkit serial analyzer to a dsPIC DSC or microcontroller supporting I2C protocol (see Table 2-10).

2.3.10 Input Power Connector (J17)

The dsPIC DSC Signal Board receives the input from a 9V-24V power supply. It is connected to the board through connector J17 (see Table 2-11).

TABLE 2-10: PICkit™ SERIAL ANALYZER I2C INTERFACE (J12) PIN DESCRIPTION

Pin # Signal Name Pin Description

1 No Connection —

2 DVDD Digital Supply Voltage

3 DGND Digital Ground

4 PIM:69_PWR:A15_EXP:28_FLT_PICkit PICkit I2C™ Interface Serial Data

5 PIM:49_PWR:A28_EXP:21 PICkit I2C Interface Serial Clock Interface

6 No Connection —

TABLE 2-11: INPUT POWER CONNECTOR (J17) PIN DESCRIPTION

Pin # Signal Name Pin Description

1 EXT DC+ Input Supply Voltage

3 DGND Digital Ground

3 DGND Digital Ground

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Board Interface Description

2.3.11 Power Board Interface Connector (J13)

A 120-pin interface connector, J13, is used to interface the dsPIC DSC Signal Board with the dedicated power application board. All the signals from the PIM header are routed to this connector. It also has a connection to the input DC bus, supply voltages (+3.3V/+5V) and op amp reference signals.

Table 2-12 and Table 2-13 describe the J13 connector on-board pin functions. In Table 2-12, the J13 connector pins are tabulated in order of their number, whereas in Table 2-13, signals on connector J13 are grouped according to their functionality.

TABLE 2-12: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT

Connector J13

Signal Name PIM Connection/Functional Description PIM Pin

A1 DC+ Input DC Bus Voltage —

B1 DC+ Input DC Bus Voltage —

C1 DC+ Input DC Bus Voltage —

A2 PGND Power Ground —

B2 PGND Power Ground —

C2 PGND Power Ground —

A3 +5V Fixed +5V —

B3 +5V Fixed +5V —

C3 AGND Analog Ground —

A4 AVDD(4) Analog Voltage (+3.3V/+5V) —

B4 AVDD(4) Analog Voltage (+3.3V/+5V) —

C4 AGND Analog Ground —

A5 PIM:12_PWR:A5_EXP:09 Direct Connection 12

B5 PIM:11_PWR:B5_EXP:08 Filter Signal 11

C5 PIM:10_PWR:C5 Direct Connection 10

A6 PIM:09_PWR:A6_EXP:07 Direct Connection 9

B6 PIM:08_PWR:B6_EXP:06 Direct Connection 8

C6 PIM:07_PWR:C6_EXP:05 Direct Connection 7

A7 PIM:06_PWR:A7_EXP:04 Direct Connection 6

B7 PIM:05_PWR:B7_EXP:03 Direct Connection 5

C7 PIM:04_PWR:C7_EXP:02 Direct Connection 4

A8 PIM:03_PWR:A8_EXP:49 Direct Connection 3

B8 PIM:01_PWR:B8_EXP:01 Direct Connection – Debug LED(1) 1

C8 PIM:100_PWR:C8_EXP:50 Direct Connection 100

A9 PIM:99_PWR:A9_EXP:47 Direct Connection 99

B9 PIM:98_PWR:B9_EXP:48 Direct Connection 98

C9 PIM:97_PWR:C9_EXP:23 Filter Signal 97

A10 DGND Digital Ground —

B10 DGND Digital Ground —

C10 DGND Digital Ground —

A11 PIM:96_PWR:A11 Direct Connection 96

Note 1: Direct connection identifies the connection between the J13 connector pins and PIM pins that do not havean analog filter at their input.

2: Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.

3: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

4: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

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dsPIC® DSC Signal Board

B11 PIM:95_PWR:B11 Direct Connection 95

C11 PIM:94_PWR:C11_EXP:45 Direct Connection 94

A12 PIM:93_PWR:A12_EXP:46 Direct Connection 93

B12 PIM:92_PWR:B12 Direct Connection 92

C12 PIM:91_PWR:C12_EXP:32 Direct Connection – PICkit™ SPI Interface CS 91

A13 PIM:90_PWR: A13 Direct Connection 90

B13 PIM:89_PWR:B13 Direct Connection 89

C13 PIM:88_PWR:C13_EXP:31 Direct Connection – PICkit SPI Interface Data In 88

A14 PIM:87_PWR:A14_EXP:30 Direct Connection – PICkit SPI Clock 87

B14 PIM:85_PWR:B14 Direct Connection 85

C14 PIM:84_PWR:C14_EXP:29 Filter Signal – Push Button SW2 84

A15 PIM:69_PWR:A15_EXP:28 Filter Signal – Push Button SW1/I2C™ PICkit Interface 69

B15 PIM:82_PWR:B15 Direct Connection 82

C15 PIM:81_PWR:C15 Filter Signal 81

A16 PIM:80_PWR:A16_EXP:27 Direct Connection 80

B16 PIM:79_PWR:B16 Filter Signal 79

C16 PIM:78_PWR:C16_EXP:26 Direct Connection – PICkit SPI Interface Data Out 78

A17 PIM:77_PWR:A17 Filter Signal 77

B17 PIM:76_PWR:B17 Filter Signal 76

C17 PIM:105_PWR:C17 Direct Connection 105

A18 PIM:104_PWR:A18 Direct Connection – Reference Voltage (VREF) 104

B18 PIM:74_PWR:B18 Filter Signal 74

C18 PIM:73_PWR:C18 Filter Signal 73

A19 PIM:72_PWR:A19 Direct Connection 72

B19 PIM:71_PWR:B19 Filter Signal 71

C19 PIM:103_PWR:C19 Direct Connection – Reference Voltage (VREF) 103

A20 DGND Digital Ground —

B20 DGND Digital Ground —

C20 DGND Digital Ground -

A21 PIM:70_PWR:A21 Direct Connection 70

B21 PIM:83_PWR:B21 Filter Signal 83

C21 PIM:102_PWR:C21 Direct Connection – Reference Voltage (VREF) 102

A22 PIM:68_PWR:A22 Direct Connection 68

B22 PIM:67_PWR:B22 Filter Signal 67

C22 PIM:66_PWR:C22 Filter Signal 66

A23 DGND Through 0 Resistor (R73) —

B23 DGND Through 0 Resistor (R70) —

C23 PIM:61_PWR:C23_EXP:24 Direct Connection 61

A24 PIM:60_PWR:A24_EXP:60 Direct Connection 60

B24 PIM:59_PWR:B24_EXP:57 Direct Connection – Debug LED(2) 59

TABLE 2-12: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (CONTINUED)

Connector J13

Signal Name PIM Connection/Functional Description PIM Pin

Note 1: Direct connection identifies the connection between the J13 connector pins and PIM pins that do not havean analog filter at their input.

2: Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.

3: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

4: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

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Board Interface Description

C24 PIM:101_PWR:C24 Direct Connection – Reference Voltage (VREF) 101

A25 PIM:58_PWR:A25 Direct Connection 58

B25 PIM:57_PWR:B25 Filter Signal 57

C25 PIM:56_PWR:C25 Filter Signal 56

A26 PIM:55_PWR:A26 Filter Signal 55

B26 PIM:54_PWR:B26 Filter Signal 54

C26 PIM:53_PWR:C26 Direct Connection – UART Transmit 53

A27 PIM:52_PWR:A27_EXP:59 Direct Connection 52

B27 PIM:51_PWR:B27_EXP:58 Direct Connection 51

C27 PIM:50_PWR:C27_EXP:22 Direct Connection 50

A28 PIM:49_PWR:A28_EXP:21 Direct Connection – UART Receive/I2C™ PICkit™ Interface 49

B28 PIM:48_PWR:B28_EXP:20 Direct Connection 48

C28 PIM:47_PWR:C28_EXP:19 Direct Connection 47

A29 PIM:44_PWR:A29 Direct Connection 44

B29 PIM:43_PWR:B29 Direct Connection 43

C29 PIM:42_PWR:C29 Direct Connection 42

A30 DGND Digital Ground —

B30 DGND Digital Ground —

C30 DGND Digital Ground —

A31 PIM:41_PWR:A31_EXP:56 Direct Connection – Push Button SW4 41

B31 PIM:40_PWR:B31_EXP:18 Direct Connection – Push Button SW3 40

C31 PIM:39_PWR:C31_EXP:17 Direct Connection 39

A32 PIM:38_PWR:A32_EXP:16 Direct Connection 38

B32 PIM:35_PWR:B32 Filter Signal 35

C32 PIM:34_PWR:C32_EXP:15 Direct Connection – Debug LED 4 34

A33 PIM:33_PWR:A33_EXP:14 Direct Connection – Debug LED 3 33

B33 PIM:32_PWR:B33_EXP:13 Filter Signal – Potentiometer 1 32

C33 PIM:29_PWR:C33_EXP:12 Direct Connection 29

A34 PIM:28_PWR:A34 Direct Connection – Reference Voltage (VREF) 28

B34 PIM:27_PWR:B34_EXP:42 Direct Connection – Device Programming Data Line (PGD) 27

C34 PIM:26_PWR:C34_EXP:41 Direct Connection – Device Programming Clock Line (PGC) 26

A35 PIM:25_PWR:A35 Filter Signal 25

B35 PIM:24_PWR:B35 Filter Signal 24

C35 PIM:23_PWR:C35_EXP:11 Filter Signal – Potentiometer 2 23

A36 PIM:22_PWR:A36 Filter Signal 22

B36 PIM:21_PWR:B36 Filter Signal 21

C36 PIM:20_PWR:C36 Filter Signal 20

A37 PIM:19_PWR:A37_EXP:10 Direct Connection 19

B37 PIM:18_PWR:B37-EXP:55 Direct Connection 18

C37 PIM:17_PWR:C37 Filter Signal 17

TABLE 2-12: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (CONTINUED)

Connector J13

Signal Name PIM Connection/Functional Description PIM Pin

Note 1: Direct connection identifies the connection between the J13 connector pins and PIM pins that do not havean analog filter at their input.

2: Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.

3: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

4: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

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dsPIC® DSC Signal Board

A38 PIM:14_PWR:A38 Filter Signal 14

B38 DGND Through 0 Resistor (R69) —

C38 DGND Digital Ground —

A39 DGND Digital Ground —

B39 DGND Digital Ground —

C39 DGND Digital Ground —

A40 DVDD(3) Digital Voltage (+3.3V/+5V) —

B40 DVDD(3) Digital Voltage (+3.3V/+5V) —

C40 DVDD(3) Digital Voltage (+3.3V/+5V) —

TABLE 2-12: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (CONTINUED)

Connector J13

Signal Name PIM Connection/Functional Description PIM Pin

Note 1: Direct connection identifies the connection between the J13 connector pins and PIM pins that do not havean analog filter at their input.

2: Filter signal identifies the connection between the J13 connector pins and PIM pins that have an analog filter.

3: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

4: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

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Board Interface Description

TABLE 2-13: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (GROUPED BY FUNCTIONALITY)

Connector J13

Signal Name Functional DescriptionPIM Pin

Power Supply Signals

C3 AGND Analog Ground —

C4 AGND Analog Ground —

B4 AVDD Analog Voltage (+3.3V/+5V) —

A4 AVDD Analog Voltage (+3.3V/+5V) —

A10 DGND Digital Ground —

B10 DGND Digital Ground —

C10 DGND Digital Ground —

A20 DGND Digital Ground —

B20 DGND Digital Ground —

C20 DGND Digital Ground —

A30 DGND Digital Ground —

B30 DGND Digital Ground —

C30 DGND Digital Ground —

C38 DGND Digital Ground —

A39 DGND Digital Ground —

B39 DGND Digital Ground —

C39 DGND Digital Ground —

A40 DVDD Digital Voltage (+3.3V/+5V) —

B40 DVDD Digital Voltage (+3.3V/+5V) —

C40 DVDD Digital Voltage (+3.3V/+5V) —

A3 +5V Fixed +5V —

B3 +5V Fixed +5V —

A1 DC+ Input DC Bus Voltage —

B1 DC+ Input DC Bus Voltage —

C1 DC+ Input DC Bus Voltage —

A2 PGND Power Ground —

B2 PGND Power Ground —

C2 PGND Power Ground —

C24 PIM:101_PWR:C24 Reference Voltage (VREF) 101

A18 PIM:104_PWR:A18 Reference Voltage (VREF) 104

C19 PIM:103_PWR:C19 Reference Voltage (VREF) 103

C21 PIM:102_PWR:C21 Reference Voltage (VREF) 102

A34 PIM:28_PWR:A34 Reference Voltage (VREF) 28

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dsPIC® DSC Signal Board

Filter Signals

B5 PIM:11_PWR:B5_EXP:08 Filter Signal 11

C9 PIM:97_PWR:C9_EXP:23 Filter Signal 97

C15 PIM:81_PWR:C15 Filter Signal 81

B16 PIM:79_PWR:B16 Filter Signal 79

A17 PIM:77_PWR:A17 Filter Signal 77

B17 PIM:76_PWR:B17 Filter Signal 76

B18 PIM:74_PWR:B18 Filter Signal 74

C18 PIM:73_PWR:C18 Filter Signal 73

B19 PIM:71_PWR:B19 Filter Signal 71

B21 PIM:83_PWR:B21 Filter Signal 83

B22 PIM:67_PWR:B22 Filter Signal 67

C22 PIM:66_PWR:C22 Filter Signal 66

B25 PIM:57_PWR:B25 Filter Signal 57

A26 PIM:55_PWR:A26 Filter Signal 55

B26 PIM:54_PWR:B26 Filter Signal 54

B32 PIM:35_PWR:B32 Filter Signal 35

A35 PIM:25_PWR:A35 Filter Signal 25

B35 PIM:24_PWR:B35 Filter Signal 24

C25 PIM:56_PWR:C25 Filter Signal 56

A36 PIM:22_PWR:A36 Filter Signal 22

B36 PIM:21_PWR:B36 Filter Signal 21

C36 PIM:20_PWR:C36 Filter Signal 20

C37 PIM:17_PWR:C37 Filter Signal 17

A38 PIM:14_PWR:A38 Filter Signal 14

B33 PIM:32_PWR:B33_EXP:13 Filter Signal – Potentiometer 1 32

C35 PIM:23_PWR:C35_EXP:11 Filter Signal – Potentiometer 2 23

A15 PIM:69_PWR:A15_EXP:28 Filter Signal – Push Button SW1/I2C™ PICkit™ Interface 69

C14 PIM:84_PWR:C14_EXP:29 Filter Signal – Push Button SW2 84

TABLE 2-13: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (GROUPED BY FUNCTIONALITY) (CONTINUED)

Connector J13

Signal Name Functional DescriptionPIM Pin

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Board Interface Description

Non-Filter Signals

A14 PIM:87_PWR:A14_EXP:30 Direct Connection – PICkit™ SPI Clock 87

C12 PIM:91_PWR:C12_EXP:32 Direct Connection – PICkit SPI Interface CS 91

C13 PIM:88_PWR:C13_EXP:31 Direct Connection – PICkit SPI Interface Data In 88

B8 PIM:01_PWR:B8_EXP:01 Direct Connection – Debug LED 1 1

B24 PIM:59_PWR:B24_EXP:57 Direct Connection – Debug LED 2 59

A33 PIM:33_PWR:A33_EXP:14 Direct Connection – Debug LED 3 33

C32 PIM:34_PWR:C32_EXP:15 Direct Connection – Debug LED 4 34

A5 PIM:12_PWR:A5_EXP:09 Direct Connection 12

C34 PIM:26_PWR:C34_EXP:41 Direct Connection – Device Programming Clock Line (PGC) 26

B34 PIM:27_PWR:B34_EXP:42 Direct Connection – Device Programming Data Line (PGD) 27

C16 PIM:78_PWR:C16_EXP:26 Direct Connection – PICkit SPI Interface Data Out 78

B31 PIM:40_PWR:B31_EXP:18 Direct Connection – Push Button SW3 40

A31 PIM:41_PWR:A31_EXP:56 Direct Connection – Push Button SW4 41

A28 PIM:49_PWR:A28_EXP:21 Direct Connection – UART Receive/I2C™ PICkit Interface 49

C26 PIM:53_PWR:C26 Direct Connection – UART Transmit 53

C5 PIM:10_PWR:C5 Direct Connection 10

A6 PIM:09_PWR:A6_EXP:07 Direct Connection 9

B6 PIM:08_PWR:B6_EXP:06 Direct Connection 8

C6 PIM:07_PWR:C6_EXP:05 Direct Connection 7

A7 PIM:06_PWR:A7_EXP:04 Direct Connection 6

B7 PIM:05_PWR:B7_EXP:03 Direct Connection 5

C7 PIM:04_PWR:C7_EXP:02 Direct Connection 4

A8 PIM:03_PWR:A8_EXP:49 Direct Connection 3

C8 PIM:100_PWR:C8_EXP:50 Direct Connection 100

A9 PIM:99_PWR:A9_EXP:47 Direct Connection 99

B9 PIM:98_PWR:B9_EXP:48 Direct Connection 98

A11 PIM:96_PWR:A11 Direct Connection 96

B11 PIM:95_PWR:B11 Direct Connection 95

C11 PIM:94_PWR:C11_EXP:45 Direct Connection 94

A12 PIM:93_PWR:A12_EXP:46 Direct Connection 93

B12 PIM:92_PWR:B12 Direct Connection 92

A13 PIM:90_PWR: A13 Direct Connection 90

B13 PIM:89_PWR:B13 Direct Connection 89

B14 PIM:85_PWR:B14 Direct Connection 85

B15 PIM:82_PWR:B15 Direct Connection 82

A16 PIM:80_PWR:A16_EXP:27 Direct Connection 80

A19 PIM:72_PWR:A19 Direct Connection 72

A21 PIM:70_PWR:A21 Direct Connection 70

A22 PIM:68_PWR:A22 Direct Connection 68

A24 PIM:60_PWR:A24_EXP:60 Direct Connection 60

A25 PIM:58_PWR:A25 Direct Connection 58

A27 PIM:52_PWR:A27_EXP:59 Direct Connection 52

TABLE 2-13: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (GROUPED BY FUNCTIONALITY) (CONTINUED)

Connector J13

Signal Name Functional DescriptionPIM Pin

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dsPIC® DSC Signal Board

B27 PIM:51_PWR:B27_EXP:58 Direct Connection 51

C27 PIM:50_PWR:C27_EXP:22 Direct Connection 50

B28 PIM:48_PWR:B28_EXP:20 Direct Connection 48

C28 PIM:47_PWR:C28_EXP:19 Direct Connection 47

A29 PIM:44_PWR:A29 Direct Connection 44

B29 PIM:43_PWR:B29 Direct Connection 43

C29 PIM:42_PWR:C29 Direct Connection 42

C31 PIM:39_PWR:C31_EXP:17 Direct Connection 39

A32 PIM:38_PWR:A32_EXP:16 Direct Connection 38

C33 PIM:29_PWR:C33_EXP:12 Direct Connection 29

A37 PIM:19_PWR:A37_EXP:10 Direct Connection 19

B37 PIM:18_PWR:B37-EXP:55 Direct Connection 18

C23 PIM:61_PWR:C23_EXP:24 Direct Connection 61

C17 PIM:105_PWR:C17 Direct Connection 105

Not Connected

A23 DGND Through 0 Resistor (R73) —

B23 DGND Through 0 Resistor (R70) —

B38 DGND Through 0 Resistor (R69) —

TABLE 2-13: dsPIC® DSC SIGNAL BOARD J13 CONNECTOR PINOUT (GROUPED BY FUNCTIONALITY) (CONTINUED)

Connector J13

Signal Name Functional DescriptionPIM Pin

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Board Interface Description

2.3.12 Expansion Board Connector (J4, J5 and J7)

A 60-pin connector permits connection of the dsPIC DSC Signal Board to an expansion board, which can be used for improved user interface, CAN and LIN/J2602 communication. Table 2-14 provides the PIM signals, DC bus and supply voltages con-nected to 60 pins. All odd numbered pin connections of the connector J7 are also routed to the 30-pin header, J4. All even numbered pin connections of connector J7 are also routed to a 30-pin header, J5.

TABLE 2-14: dsPIC® DSC SIGNAL BOARD CONNECTORS, J7, J4 AND J5 PINOUT

Connector J7

Signal Name Functional DescriptionHeader

J4Header

J5PIM Pin

1 PIM:01_PWR:B8_EXP:01 Direct Connection – Debug LED 1 1 — 1

2 PIM:04_PWR:C7_EXP:02 Direct Connection — 2 4

3 PIM:05_PWR:B7_EXP:03 Direct Connection 3 — 5

4 PIM:06_PWR:A7_EXP:04 Direct Connection — 4 6

5 PIM:07_PWR:C6_EXP:05 Direct Connection 5 — 7

6 PIM:08_PWR:B6_EXP:06 Direct Connection — 6 8

7 PIM:09_PWR:A6_EXP:07 Direct Connection 7 — 9

8 PIM:11_PWR:B5_EXP:08 Filter Signal — 8 11

9 PIM:12_PWR:A5_EXP:09 Direct Connection 9 — 12

10 PIM:19_PWR:A37_EXP:10 Direct Connection — 10 19

11 PIM:23_PWR:C35_EXP:11 Filter Signal – Potentiometer 2 11 — 23

12 PIM:29_PWR:C33_EXP:12 Direct Connection — 12 29

13 PIM:32_PWR:B33_EXP:13 Potentiometer 1 13 — 32

14 PIM:33_PWR:A33_EXP:14 Direct Connection – Debug LED 3 — 14 33

15 PIM:34_PWR:C32_EXP:15 Direct Connection – Debug LED 4 15 — 34

16 PIM:38_PWR:A32_EXP:16 Direct Connection — 16 38

17 PIM:39_PWR:C31_EXP:17 Direct Connection 17 — 39

18 PIM:40_PWR:B31_EXP:18 Direct Connection – Push Button SW3 — 18 40

19 PIM:47_PWR:C28_EXP:19 Direct Connection 19 — 47

20 PIM:48_PWR:B28_EXP:20 Direct Connection — 20 48

21 PIM:49_PWR:A28_EXP:21 Direct Connection – UART Receive/I2C™ PICkit™ Interface

21 — 49

22 PIM:50_PWR:C27_EXP:22 Direct Connection – UART Transmit — 22 50

23 PIM:97_PWR:C9_EXP:23 Filter Signal 23 — 97

24 PIM:61_PWR:C23_EXP:24 Direct Connection — 24 61

25 PIM:13 (MCLR) Direct Connection – Device Master Clear (MCLR) 25 — 13

26 PIM:78_PWR:C16_EXP:26 Direct Connection – PICkit SPI Interface Data Out — 26 78

27 PIM:80_PWR:A16_EXP:27 Direct Connection 27 — 80

28 PIM:69_PWR:A15_EXP:28 Filter Signal – Push Button SW1/I2C PICkit Interface

— 28 69

29 PIM:84_PWR:C14_EXP:29 Filter Signal – Push Button SW2 29 — 84

30 PIM:87_PWR:A14_EXP:30 Direct Connection – PICkit SPI Clock — 30 87

31 PIM:88_PWR:C13_EXP:31 Direct Connection – PICkit SPI Interface Data In 31 — 88

32 PIM:91_PWR:C12_EXP:32 Direct Connection – PICkit SPI Interface CS — 32 91

33 DGND Digital Ground 33 — —

Note 1: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

2: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

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dsPIC® DSC Signal Board

34 DGND Digital Ground — 34 —

35 DC+ Input DC Bus Voltage 35 — —

36 DC+ Input DC Bus Voltage — 36 —

37 DGND Digital Ground 37 — —

38 DGND Digital Ground — 38 —

39 +5V Fixed +5V 39 — —

40 +5V Fixed +5V — 40 —

41 PIM:26_PWR:C34_EXP:41 Direct Connection – Device Programming Clock Line (PGC)

41 — 26

42 PIM:27_PWR:B34_EXP:42 Direct Connection – Device Programming Data Line (PGD)

— 42 27

43 DVDD(1) Digital Voltage (+3.3/+5V) 43 — —

44 DVDD(1) Digital Voltage (+3.3/+5V) — 44 —

45 PIM:94_PWR:C11_EXP:45 Direct Connection 45 — 94

46 PIM:93_PWR:A12_EXP:46 Direct Connection — 46 93

47 PIM:99_PWR:A9_EXP:47 Direct Connection 47 — 99

48 PIM:98_PWR:B9_EXP:48 Direct Connection — 48 98

49 PIM:03_PWR:A8_EXP:49 Direct Connection 49 — 3

50 PIM:100_PWR:C8_EXP:50 Direct Connection — 50 100

51 AGND Analog Ground 51 — —

52 AGND Analog Ground — 52 —

53 AVDD(2) Analog Voltage (+3.3/+5V) 53 — —

54 AVDD(2) Analog Voltage (+3.3/+5V) — 54 —

55 PIM:18_PWR:B37-EXP:55 Direct Connection 55 — 18

56 PIM:41_PWR:A31_EXP:56 Direct Connection – Push Button SW4 — 56 41

57 PIM:59_PWR:B24_EXP:57 Direct Connection – Debug LED 2 57 — 59

58 PIM:51_PWR:B27_EXP:58 Direct Connection — 58 51

59 PIM:52_PWR:A27_EXP:59 Direct Connection 59 — 52

60 PIM:60_PWR:A24_EXP:60 Direct Connection — 60 60

TABLE 2-14: dsPIC® DSC SIGNAL BOARD CONNECTORS, J7, J4 AND J5 PINOUT (CONTINUED)

Connector J7

Signal Name Functional DescriptionHeader

J4Header

J5PIM Pin

Note 1: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

2: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into the board.

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Board Interface Description

2.4 USER INTERFACE HARDWARE

2.4.1 Board Jumpers

The dsPIC DSC Signal Board has five jumpers.The on-board jumpers are provided in Table 2-15. Figure 2-2 shows the jumper positions.

FIGURE 2-2: dsPIC® DSC SIGNAL BOARD JUMPERS

TABLE 2-15: dsPIC® DSC SIGNAL BOARD JUMPERS

JumperDesignator

Number of Pins

Jumper Description

J11 2 If shorted, it connects the TX signal between the PIM and isolator, U3(see Figure A-3)

J14 3 Position 1-2: Enables Power Supply 1 for fixed +5VPosition 2-3: Disables Power Supply 1 for fixed +5V

J15 2 If shorted, it connects the signal between the PIM and push button, SW1

J18 2 If the jumpers J18 and J19 are shorted on the PIM, then the output ofPower Supply 2 is +5V; if the connectors J18 and J19 are open, thenthe output is +3.3V(1)

J19 2 If the jumpers J18 and J19 are shorted on the PIM, then the output ofPower Supply 2 is +5V; if the connectors J18 and J19 are open, thenthe output is +3.3V(1)

Note 1: J18 and J19 must be in the same position for proper operation of the power supply circuit.

J14

J15

J11

J18 J19

J14

J15

J11

J18 J19

®

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dsPIC® DSC Signal Board

2.4.2 Push Buttons, LEDs and Potentiometers

The dsPIC DSC Signal Board has the following push buttons, LEDs and potentiometers:

• Device Reset Push Button (SW0)

• Four Push Buttons (SW1-SW4)

• Two Potentiometers (POT1, POT2)

• Two Power-on Status LEDs (LD5 and LD6)

• Four LEDs for Debugging (LD1-LD4)

• Two LED Indicators for USB Communications (LD7 and LD8)

Table 2-16 and Table 2-17 provide the LED indicators, push buttons and potentio-meters. Figure 2-3 shows the positions of the on-board push buttons, LEDs and potentiometers.

TABLE 2-16: LED INDICATORS

Label Hardware Element Description

LD1-LD4 LEDs are used for debugging

LD5 Power-on status LED indicates the status of Power Supply 2 (DVDD)

LD6 Power-on status LED indicates the status of Power Supply 1 (+5V)

LD7 USB transmit indication

LD8 USB receive indication

TABLE 2-17: PUSH BUTTONS AND POTENTIOMETERS

Label Hardware Element Description

SW0 Push button to reset the target device

SW1-SW4 General purpose push buttons; when momentarily pressed, the switch connects the respective PIM pin to ground

POT1, POT2 10 k potentiometer

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Board Interface Description

FIGURE 2-3: dsPIC® DSC SIGNAL BOARD USER INTERFACE

SW0

SW1

SW2

SW3

SW4

POT2

POT1

LD1-4

LD7-8

LD5

®

LD6

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dsPIC® DSC Signal Board

2.5 BOARD TEST POINTS

There are several test points on the dsPIC DSC Signal Board that can be used to check various signals. Table 2-18 provides the on-board test points. Figure 2-4 shows the dsPIC DSC Signal Board test points.

TABLE 2-18: TEST POINTS

Test PointsSignal Name

Description

TP1 — Output of Buck Converter, U4 (MCP16301)

TP2 — Output of Buck Converter, U6 (MCP16301)

TP3 EXT DC+ Input Bus Voltage Connected to Connector J17

TP4 DGND Digital Ground

TP5 AGND Analog Ground

TP6 DC24V DC Bus Voltage

TP7 DVDD(1) Digital Supply Voltage (+3.3V/+5V)

TP8 AVDD(2) Analog Supply Voltage (+3.3V/+5V)

TP9 DC+ Input Bus Voltage Connector to Connectors J13 and J7

TP10 +5V Fixed +5V DC Voltage

TP11 VREF(3) Half the Analog Supply Voltage, AVDD, for Reference to Op Amps

TP12, TP13, TP14, TP20

DGND Digital Ground

TP15, TP16 AGND Analog Ground

TP18 PGND Power Ground

TP19 GND_USB USB Ground

Note 1: DVDD voltage level is configured as either +3.3V or +5V by the PIM plugged intothe board.

2: AVDD voltage level is configured as either +3.3V or +5V by the PIM plugged into theboard.

3: VREF voltage level is configured as either +1.65V or +2.5V based on AVDD.

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Board Interface Description

FIGURE 2-4: dsPIC® DSC SIGNAL BOARD TEST POINTS

TP20

TP3

TP9

TP6

TP10 TP1 TP2 TP7

TP4

TP14

TP8

TP5

TP19

TP12

TP11

TP15

TP18 TP16 TP13

®

2014 Microchip Technology Inc. DS50002263B-page 37

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dsPIC® DSC Signal Board

NOTES:

DS50002263B-page 38 2014 Microchip Technology Inc.

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dsPIC® DSC SIGNAL BOARD

USER’S GUIDE

Chapter 3. Hardware Description

3.1 INTRODUCTION

This chapter provides a more detailed description of the hardware features of the dsPIC® DSC Signal Board.

3.2 HIGHLIGHTS

This chapter covers the following topics:

• Power Supply Circuit

• Voltage Reference Circuit

• Isolated USB Interface

• PIM Header Signals

• Supply Voltage and Ground Connection

The hardware sections of the dsPIC DSC Signal Board are shown in Figure 3-1.

2014 Microchip Technology Inc. DS50002263B-page 39

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dsPIC® DSC Signal Board

FIGURE 3-1: dsPIC® DSC SIGNAL BOARD HARDWARE SECTIONS

13

Legend:

1 Switches 2 Prototyping Area

3 General Purpose LEDs 4 Voltage Reference Circuit

5 Potentiometers 6 Power Supply 1 (fixed +5V)

7 Power Supply 2 (+3.3/+5V selectable) 8 PICkit™/ICD Interface

9 SPI Interface 10 USB/UART Isolated Interface

11 Header J4/J5 for Expansion Board 12 60-Pin Expansion Board Connector for Add-on Boards (J7)

13 100/105 PIM Header 14-a Analog Input Signal Conditioning

14-b Analog Input Signal Conditioning 15 120-Pin Power Board Interface Connector for Application Boards (J13)

67

21

3

45

15

14-a

8

9

14-b

10

11 12

®

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Hardware Description

3.3 POWER SUPPLY CIRCUIT

The dsPIC DSC Signal Board has two power supply circuits: Power Supply 1 andPower Supply 2 (see Figure 3-2) with identical topology. Power Supply 1 has a fixed+5V output, while the output of Power Supply 2 can be switched between +3.3V/+5V,depending on the dsPIC DSC or microcontroller used.

FIGURE 3-2: POWER SUPPLY CIRCUIT ARCHITECTURE

Input for the power supply circuits is provided either through power connector jack J17, or through pins of connectors J13 and J7 with a DC+ signal. The power supply circuit has these key features:

• High efficiency

• Low ripple output

• Snubber circuit or ferrite bead provided to minimize switching noise

Buck Converter

(MCP16301)

LDO

(MCP1826)

TP1

DCLOCAL +5V

Power Supply 1

FeedbackFeedback

Buck Converter(MCP16301)

LDO(MCP1826)

TP2

DVDD

Power Supply 2

FeedbackFeedback

J18 J19

EN

1 2J14

DCLOCAL

3

2014 Microchip Technology Inc. DS50002263B-page 41

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dsPIC® DSC Signal Board

The power supply provides power to these components:

• A dsPIC DSC or microcontroller device, an isolator (ADUM1201CRZ) and the reference voltage circuit for op amps receives +3.3V/+5V power from Power Supply 2

• J13 and J7 connector pins with a digital voltage (DVDD) signal receive power from Power Supply 2 (see Note 1)

• J13 and J7 connector pins with a fixed +5V signal receive power from Power Supply 1 (see Note 1)

The output of a fixed +5V power supply circuit can be disabled using jumper J14. When Pins 1-2 on the connector J14 are connected, Power Supply 1 is enabled with a fixed +5V DC output voltage. However, when Pins 2-3 are connected, Power Supply 1 is disabled (see Note 2).

3.3.1 Power Supply 2 Output Selection

The Power Supply 2 is interfaced with the PIM through connectors J18 and J19 (see Figure 3-3). When connectors J18 and J19 are short-circuited on the PIM, it generates +5V DC. When connectors J18 and J19 are open-circuited on the PIM, +3.3V DC is generated.

FIGURE 3-3: POWER SUPPLY 2 WITH CONNECTION ON PIM

Note 1: For the power connector jack J17, a 24V power supply (AC002013) is recommended.

2: When the dsPIC DSC Signal Board is used with Microchip’s Motor Control 10-24V Driver Board (Dual/Single), the connection of a power supply to the dsPIC DSC Signal Board is optional.

Buck Converter(MCP16301)

J18

DC Local LDO

(MCP1826)

J19

DVDD

105-Pin PIM

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Hardware Description

3.4 VOLTAGE REFERENCE CIRCUIT

The reference voltage is generated on the dsPIC DSC Signal Board. It is half the output of Power Supply 2 (+1.65V or +2.5V) depending upon AVDD. The reference circuit is built around an MCP6021 op amp (see Figure 3-4) and connects to several PIM header pins (see Table 2-2). The reference voltage is also connected to connector J13 (see Table 2-12).

Figure 3-4 shows the circuit used to obtain the voltage reference signal which is half the magnitude of the AVDD. The resistors R25 and R26 form the voltage divider circuit and generate a voltage equal to half of the analog voltage (AVDD). Op Amp U1 MCP6021 is used as the buffer. The resistors R81, R82 and C30 form a compensation circuit to drive capacitive loads, where C30 acts as a high-frequency feedback path and R81 is used as a feedback path for low-frequency signals.

FIGURE 3-4: VOLTAGE REFERENCE SIGNAL GENERATION CIRCUIT

Figure 3-5 shows that the reference voltage to the PIM can be supplied in two ways. It can be supplied by the circuit on the dsPIC DSC Signal Board (see Figure 3-4) or it can also be supplied externally from the J13 connector pins. The reference voltage selection can be made by populating one of the two resistors: RINT or REXT. Table 3-1 provides the list of resistors used to connect the reference signal.

FIGURE 3-5: VOLTAGE REFERENCE SIGNAL ROUTING

AVDD

C720.1 µF

R81

C30

1000 pF

R81

20R

1k

C730.1 µF

R2510k

R2610k

D9DNP

AVDD

AGND

AGNDAGNDAGND

AGND

4

3

5

2

1

TP11

VREF

-A

+A

VDD

VSS

OUTAU1

MCP6021

Voltage Reference

PIM Header

Connector J13

REXT

RINT

0

0DNP

2014 Microchip Technology Inc. DS50002263B-page 43

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dsPIC® DSC Signal Board

3.5 ISOLATED USB INTERFACE

The dsPIC DSC Signal Board uses an on-board MCP2200 interface as a bridge between the UART and USB. The connector J3 is a mini USB header used to connect a PC USB cable. The USB is isolated from the dsPIC DSC using a two-channel digital isolator (ADUM1201CRZ).

FIGURE 3-6: USB-UART CONNECTION SETUP

Figure 3-6 shows that the UART signal used for the USB interface is isolated through the ADUM1201CRZ isolator. The MCP2200 is a USB-to-UART serial converter, which enables USB connectivity in applications that have a UART interface. The USB-UART connection setup can support a baud rate of up to 1 Mbps.

TABLE 3-1: RESISTOR TO SELECT VOLTAGE REFERENCE SOURCE

PIM Header J13 Connector RINT Designator REXT Designator

PIM:101 PIM:101_PWR:C24 R89 R90

PIM:102 PIM:102_PWR:C21 R95 R96

PIM:103 PIM:103_PWR:C19 R91 R92

PIM:104 PIM:104_PWR:A18 R93 R94

PIMADUM1201CRZ

(Digital Isolator)

MCP2200

(USB-UART)

U2

TX TX

RX RX

U3

DS50002263B-page 44 2014 Microchip Technology Inc.

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Hardware Description

3.6 PIM HEADER SIGNALS

3.6.1 Signal Nomenclature

The dsPIC DSC signals use the following naming convention (except for auxiliary power supply pins):

PIM:xx_PWR:yy_EXP:zz[_FLT]

where:

PIM:xx indicates that the signal originates at PIM Pin Number xx

PWR:yy indicates that the signal is connected to Pin yy of the power board interface connector (J13)

EXP:zz indicates that the signal is connected to Pin zz of the expansion board connector (J7)

[_FLT]: if present, indicates that the signal between the connector J13 and the PIM is filtered (see Figure 3-7 to Figure 3-10 for different connection topologies).

3.6.2 Analog Input Signal Conditioning

The PIM pins are connected to the power board interface connector J13 and the expansion board connector J7 by the following four possible topologies:

• Topology 1: In this topology, there is a first order low-pass filter and voltage surge protection diodes between the PIM header and the connectors. Figure 3-7 shows the connection between the PIM header and the connectors J13, J7, J4 and J5.

• Topology 2: In this topology, there is a first order low-pass filter and voltage surge protection diodes between the PIM header and the connectors. Figure 3-8 shows the connection between the PIM header and the connector J13. These signals are not connected to connectors J7, J4 and J5.

• Topology 3: In this topology, there is no connection for a first order filter. Figure 3-9 shows the direct connection between the PIM header and the connectors J13, J7, J4 and J5.

• Topology 4: In this topology, there is no connection for a first order filter. Figure 3-10 shows the direct connection between the PIM header and the connector J13. These signals are not connected to connectors J7, J4 and J5.

2014 Microchip Technology Inc. DS50002263B-page 45

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dsPIC® DSC Signal Board

FIGURE 3-7: TOPOLOGY 1

FIGURE 3-8: TOPOLOGY 2

PIM:xx_PWR:yy_EXP:zz

Expansion BoardConnector (J7, J4, J5)

PIM:xx_PWR:yy_EXP:zz_FLT

PIM HeaderVoltage SurgeProtection

AGND

AVDD

C

1st OrderLow-Pass Filter

‘xx’‘zz’

D

C

PIM:xx_PWR:yy_EXP:zz

Power Board Interface Connector J13

‘yy’

Note: The signal connected to the PIM has the same name of the signal at the connector, with an added “_FLT” suffix toindicate that the signal is filtered. The 1st order low-pass filter is implemented in hardware; however, the user canremove the components or change their values to better fit the application requirements.

Expansion BoardConnector (J7, J4, J5)

PIM:xx_PWR:yy_FLT

PIM HeaderVoltage SurgeProtection

AGND

AVDD

C

1st OrderLow-Pass Filter

‘xx’

D

C

PIM:xx_PWR:yy

Power Board Interface Connector J13

‘yy’

R

Note: The signal connected to the PIM has the same name of the signal at the connector, with an added “_FLT” suffixto indicate that the signal is filtered. The 1st order low-pass filter is implemented in hardware; however, the usercan remove the components or change their values to better fit the application requirements.

DS50002263B-page 46 2014 Microchip Technology Inc.

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Hardware Description

FIGURE 3-9: TOPOLOGY 3

FIGURE 3-10: TOPOLOGY 4

Diode D (BAS 40-04 with 40V blocking voltage), shown in Figure 3-7 and Figure 3-8, is used for transient and ESD protection. The 1st order low-pass filter, shown in Figure 3-7 and Figure 3-8, is used to attenuate high-frequency noise. The cutoff frequency for this filter is given by Equation 3-1.

EQUATION 3-1: FIRST ORDER LOW-PASS FILTER CUTOFF FREQUENCY

Expansion BoardConnector (J7, J4, J5)

PIM:xx_PWR:yy_EXP:zz

PIM Header

‘xx’

PIM:xx_PWR:yy_EXP:zz

Power Board Interface Connector J13

‘yy’

PIM:xx_PWR:yy_EXP:zz ‘zz’

Expansion BoardConnector (J7, J4, J5)

PIM:xx_PWR:yy

PIM Header

‘xx’

PIM:xx_PWR:yy

Power Board Interface Connector J13

‘yy’

Cutof f Frequency1

2RC--------------- 340 kHz=

Where:

R = 1 k and C = 470 pF

2014 Microchip Technology Inc. DS50002263B-page 47

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dsPIC® DSC Signal Board

3.7 SUPPLY VOLTAGE AND GROUND CONNECTION

The dsPIC DSC Signal Board has three separate grounds: Digital Ground (DGND), Analog Ground (AGND) and Power Ground (PGND). All three grounds can be con-nected by populating the resistors R74 and R75 (see Figure 3-11). DGND and AGND are connected through R29 (0) by default. The Analog Voltage (AVDD) is derived from DVDD through R130 (0), see Figure 3-12.

FIGURE 3-11: GROUND INTERCONNECTION

FIGURE 3-12: CONNECTION OF AVDD TO DVDD

Note: PGND is expected to be connected to DGND and AGND on applicationboards. To avoid ground loops, PGND is not connected to AGND andDGND on the dsPIC DSC Signal Board.

R29 R74 R75

DGND AGND PGND

DNP0 DNP

AGNDDGND

TP7 TP8

R130

0DVDD AVDD

DS50002263B-page 48 2014 Microchip Technology Inc.

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dsPIC® DSC SIGNAL BOARDUSER’S GUIDE

Appendix A. Schematics and Layout

A.1 INTRODUCTION

This chapter provides detailed technical information on the dsPIC® DSC Signal Board.

A.2 BOARD SCHEMATICS AND LAYOUT

The following are the dsPIC DSC Signal Board schematics and layout:

• Figure A-1: dsPIC DSC Signal Board schematics (Sheet 1 of 5)

• Figure A-2: dsPIC DSC Signal Board schematics (Sheet 2 of 5)

• Figure A-3: dsPIC DSC Signal Board schematics (Sheet 3 of 5)

• Figure A-4: dsPIC DSC Signal Board schematics (Sheet 4 of 5)

• Figure A-5: dsPIC DSC Signal Board schematics (Sheet 5 of 5)

• Figure A-6: dsPIC DSC Signal Board layout

2014 Microchip Technology Inc. DS50002263B-page 49

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dsP

IC®

DS

C S

ign

al Bo

ard

DS

50

00

22

63

B-p

ag

e 5

0

20

14

Micro

chip

Te

chn

olo

gy In

c.

PIM:40_PWR:B31_EXP:18

:41_PWR:A31_EXP:56

1k0603

R15

12

GREENLD1

k3

9

DGND

PIM

:01_

PWR

:B8_

EXP:

01

1k0603

R16

12

GREENLD2

DGND

PIM

:59_

PWR

:B24

_EX

P:57

1k0603

R17

12

GREENLD3

DGND

PIM

:33_

PWR

:A33

_EX

P:14

1k0603

R18

12

GREENLD4

DGND

PIM

:34_

PWR

:C32

_EX

P:15

12

34

56

1x6 RA

J1

RJ-11

12

34

56

J2

DGND

DVDD

PIM:13 (MCLR)

PIM:27_PWR:B34_EXP:42PIM:26_PWR:C34_EXP:41(PGC)

(PGD)

1x30

12

34

56

78

910

1112

1314

1516

1718

1920

2122

2324

2526

2728

2930

U2E

DGND

DVDD

PIM:51_PWR:B27_EXP:58IM:52_PWR:A27_EXP:59

PIM:54_PWR:B26_FLT

PIM:58_PWR:A25

PIM:53_PWR:C26

PIM:55_PWR:A26_FLTPIM:56_PWR:C25_FLTPIM:57_PWR:B25_FLT

PIM:59_PWR:B24_EXP:57PIM:60_PWR:A24_EXP:60PIM:61_PWR:C23_EXP:24

PIM:63 (OSC1)

PIM:66_PWR:C22_FLTPIM:67_PWR:B22_FLT

PIM:68_PWR:A2215_EXP:28_FLT_PICkit

PIM:70_PWR:A21PIM:71_PWR:B19_FLT

PIM:72_PWR:A19PIM:73_PWR:C18_FLTPIM:74_PWR:B18_FLT

PIM:101PIM:102PIM:103PIM:104

PIM:105_PWR:C17

PIM:64 (OSC2)

123456

DNP

J12

DGND

DVDD

PIM:49_PWR:A28_EXP:21PIM:69_PWR:A15_EXP:28_FLT_PICKIT

PICkit I C™2

FIGURE A-1: dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 1 OF 5)

PIM:32_PWR:B33_EXP:13_FLT

AVDD

100R0603

R2

AGND

0.1 μF060316V

C1

AGND

PIM:23_PWR:C35_EXP:11_FLT

AVDD

AGNDAGND

SPST

1 4

2 3

SW0

DGND

4.7k0603

R5

470R0603

R6

DVDD

PIM:13 (MCLR)

DGND

DVDD

PIM:69_PWR:A15_EXP:28_FLT

DGND

DVDD

PIM:84_PWR:C14_EXP:29_FLT

DGND

DVDD

DGND

DVDD

PIM

1%100R0603

R100.1 μF060316V

C3

0.1 μF060316V

C2

SPST

1 4

2 3

SW1

4.7k0603

R4

4.7k0603

R8

SPST

1 4

2 3

SW2

4.7k0603

R11

4.7k0603

R13

SPST

1 4

2 3

SW4

4.7k0603

R12

4.7k0603

R14

SPST

1 4

2 3

SW3

4.7k0603

R7

4.7060

R

0R0603

R55

0R0603

R54

0.1 μF060316V

C270.1 μF060316V

C28

DGND DGND

0.1 μF060316V

C25

0.1 μF060316V

C26

DGND

DGNDDGND1

3

2 10k3386F10%

R1

13

2 10k3386F10%

R3RESET

(POT 1)

(POT 2)

1x25

12

34

56

78

910

1112

1314

1516

1718

1920

2122

2324

25

U2A

1x25

12

34

56

78

910

1112

1314

1516

1718

1920

2122

2324

25U2B

1x25

12

34

56

78

910

1112

1314

1516

1718

1920

2122

2324

25

U2D

DGND

DVDD

DVDDPIM:01_PWR:B8_EXP:01

PIM:03_PWR:A8_EXP:49PIM:04_PWR:C7_EXP:02PIM:05_PWR:B7_EXP:03PIM:06_PWR:A7_EXP:04PIM:07_PWR:C6_EXP:05PIM:08_PWR:B6_EXP:06PIM:09_PWR:A6_EXP:07

PIM:11_PWR:B5_EXP:08_FLTPIM:10_PWR:C5

PIM:12_PWR:A5_EXP:09PIM:13 (MCLR)

PIM:14_PWR:A38_FLT

PIM:17_PWR:C37_FLTPIM:18_PWR:B37_EXP:55PIM:19_PWR:A37_EXP:10

PIM:20_PWR:C36_FLTPIM:21_PWR:B36_FLTPIM:22_PWR:A36_FLT

PIM:23_PWR:C35_EXP:11_FLTPIM:24_PWR:B35_FLTPIM:25_PWR:A35_FLT

DGND

DVDD

DVDD

AGND

AVDD

PIM:26_PWR:C34_EXP:41PIM:27_PWR:B34_EXP:42

PIM:28_PWR:A34PIM:29_PWR:C33_EXP:12

PIM:32_PWR:B33_EXP:13_FLTPIM:33_PWR:A33_EXP:14PIM:34_PWR:C32_EXP:15

PIM:35_PWR:B32_FLT

PIM:38_PWR:A32_EXP:16PIM:39_PWR:C31_EXP:17PIM:40_PWR:B31_EXP:18PIM:41_PWR:A31_EXP:56

PIM:42_PWR:C29PIM:43_PWR:B29

PIM:47_PWR:C28_EXP:19PIM:48_PWR:B28_EXP:20PIM:49_PWR:A28_EXP:21PIM:50_PWR:C27_EXP:22

PIM:44_PWR:A29

DGND

DVDD

PIM:51_PWR:B27_EXP:58PIM:52_PWR:A27_EXP:59

PIM:54_PWR:B26_FLT

PIM:58_PWR:A25

PIM:68_PWR:A22

PIM:72_PWR:A19

PIM:53_PWR:C26

PIM:55_PWR:A26_FLTPIM:56_PWR:C25_FLTPIM:57_PWR:B25_FLT

PIM:59_PWR:B24_EXP:57PIM:60_PWR:A24_EXP:60PIM:61_PWR:C23_EXP:24

PIM:63 (OSC1)

PIM:66_PWR:C22_FLTPIM:67_PWR:B22_FLT

PIM:69_PWR:A15_EXP:28_FLT_PICKITPIM:70_PWR:A21

PIM:71_PWR:B19_FLT

PIM:73_PWR:C18_FLTPIM:74_PWR:B18_FLT

1x25

12

34

56

78

910

1112

1314

1516

1718

1920

2122

2324

25

U2C

DVDD

PIM:76_PWR:B17_FLTPIM:77_PWR:A17_FLT

PIM:78_PWR:C16_EXP:26PIM:79_PWR:B16_FLT

PIM:80_PWR:A16_EXP:27PIM:81_PWR:C15_FLT

PIM:82_PWR:B15PIM:83_PWR:B21_FLT

PIM:84_PWR:C14_EXP:29_FLTPIM:85_PWR:B14

PIM:87_PWR:A14_EXP:30PIM:88_PWR:C13_EXP:31

PIM:91_PWR:C12_EXP:32

PIM:89_PWR:B13PIM:90_PWR:A13

PIM:92_PWR:B12PIM:93_PWR:A12_EXP:46PIM:94_PWR:C11_EXP:45

PIM:96_PWR:A11PIM:97_PWR:C9_EXP:23_FLT

PIM:99_PWR:A9_EXP:47PIM:98_PWR:B9_EXP:48

PIM:100_PWR:C8_EXP:50

PIM:95_PWR:B11

PIM:64 (OSC2)

(PGC)(PGD) P

PIM:69_PWR:A

8 MHz

X2

33 pF50V0603

C3333 pF50V0603

C84

DGNDDGND

1 2J15

DGND

DNPC95

PIM:69_PWR:A15_EXP:28_FLT_PICKIT

123456

DNP

J10PICkit™ SPI

PIM:78_PWR:C16_EXP:26PIM:87_PWR:A14_EXP:30PIM:88_PWR:C13_EXP:31

PIM:91_PWR:C12_EXP:32

DGND

DVDD

0RR87

0RR970RR98

RUBBER PAD 0.50x0.50x0.23

PAD1 PAD2 PAD3 PAD4

SJ-5518

PAD5

J15a

All resistors are 1% toleranceunless otherwise specified

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Schematics and Layout

FIGURE A-2: dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 2 OF 5)

DGND AGND

DVDD

PIM:17_PWR:C37

PIM:20_PWR:C36

PIM:23_PWR:C35_EXP:11

PIM:26_PWR:C34_EXP:41

PIM:29_PWR:C33_EXP:12

PIM:34_PWR:C32_EXP:15

PIM:39_PWR:C31_EXP:17

PIM:42_PWR:C29

PIM:47_PWR:C28_EXP:19

PIM:50_PWR:C27_EXP:22

PIM:53_PWR:C26

PIM:56_PWR:C25

PIM:101_PWR:C24

PIM:61_PWR:C23_EXP:24

PIM:66_PWR:C22

PIM:102_PWR:C21

PIM:103_PWR:C19

PIM:73_PWR:C18

PIM:105_PWR:C17

PIM:78_PWR:C16_EXP:26

PIM:81_PWR:C15

PIM:84_PWR:C14_EXP:29

PIM:88_PWR:C13_EXP:31

PIM:91_PWR:C12_EXP:32

PIM:94_PWR:C11_EXP:45

PIM:97_PWR:C9_EXP:23

PIM:100_PWR:C8_EXP:50

PIM:04_PWR:C7_EXP:02

PIM:07_PWR:C6_EXP:05

PIM:10_PWR:C5

DGND

+5V

AVDD

DVDD

PIM:14_PWR:A38PIM:18_PWR:B37_EXP:55PIM:19_PWR:A37_EXP:10

PIM:21_PWR:B36PIM:22_PWR:A36PIM:24_PWR:B35PIM:25_PWR:A35

PIM:27_PWR:B34_EXP:42PIM:28_PWR:A34

PIM:32_PWR:B33_EXP:13PIM:33_PWR:A33_EXP:14

PIM:35_PWR:B32PIM:38_PWR:A32_EXP:16PIM:40_PWR:B31_EXP:18PIM:41_PWR:A31_EXP:56

PIM:43_PWR:B29PIM:44_PWR:A29

PIM:48_PWR:B28_EXP:20PIM:49_PWR:A28_EXP:21PIM:51_PWR:B27_EXP:58PIM:52_PWR:A27_EXP:59

PIM:54_PWR:B26PIM:55_PWR:A26PIM:57_PWR:B25PIM:58_PWR:A25

PIM:59_PWR:B24_EXP:57PIM:60_PWR:A24_EXP:60

PIM:67_PWR:B22PIM:68_PWR:A22

PIM:69_PWR:A15_EXP:28

PIM:70_PWR:A21

PIM:71_PWR:B19PIM:72_PWR:A19PIM:74_PWR:B18

PIM:104_PWR:A18PIM:76_PWR:B17PIM:77_PWR:A17PIM:79_PWR:B16

PIM:80_PWR:A16_EXP:27PIM:82_PWR:B15

PIM:83_PWR:B21

PIM:85_PWR:B14PIM:87_PWR:A14_EXP:30

PIM:89_PWR:B13PIM:90_PWR:A13PIM:92_PWR:B12

PIM:93_PWR:A12_EXP:46PIM:95_PWR:B11PIM:96_PWR:A11

PIM:98_PWR:B9_EXP:48PIM:99_PWR:A9_EXP:47PIM:01_PWR:B8_EXP:01PIM:03_PWR:A8_EXP:49PIM:05_PWR:B7_EXP:03PIM:06_PWR:A7_EXP:04PIM:08_PWR:B6_EXP:06PIM:09_PWR:A6_EXP:07PIM:11_PWR:B5_EXP:08PIM:12_PWR:A5_EXP:09

2x30 RA

1 23 4

5 67 8

9 1011 12

13 1415 16

17 1819 20

222123 24

25 2627 28

29 3031 32

33 3435 36

37 3839 40

41 4243 44

45 4647 48

49 5051 52

53 5455 56

57 5859 60

J7PIM:01_PWR:B8_EXP:01PIM:05_PWR:B7_EXP:03PIM:07_PWR:C6_EXP:05PIM:09_PWR:A6_EXP:07PIM:12_PWR:A5_EXP:09

PIM:23_PWR:C35_EXP:11PIM:32_PWR:B33_EXP:13PIM:34_PWR:C32_EXP:15PIM:39_PWR:C31_EXP:17PIM:47_PWR:C28_EXP:19PIM:49_PWR:A28_EXP:21PIM:97_PWR:C9_EXP:23

PIM:13 (MCLR)PIM:80_PWR:A16_EXP:27PIM:84_PWR:C14_EXP:29PIM:88_PWR:C13_EXP:31

PIM:26_PWR:C34_EXP:41

PIM:94_PWR:C11_EXP:45PIM:99_PWR:A9_EXP:47PIM:03_PWR:A8_EXP:49

PIM:18_PWR:B37_EXP:55PIM:59_PWR:B24_EXP:57PIM:52_PWR:A27_EXP:59

AGND

PIM:04_PWR:C7_EXP:02PIM:06_PWR:A7_EXP:04

PIM:50_PWR:C27_EXP:22PIM:61_PWR:C23_EXP:24PIM:78_PWR:C16_EXP:26

PIM:91_PWR:C12_EXP:32PIM:87_PWR:A14_EXP:30

PIM:41_PWR:A31_EXP:56PIM:51_PWR:B27_EXP:58

DC+DC+

0R0603

R53

DGND

DNP

7

414345

1

19

9

4749

17

29

21

11

23

1315

2527

53

3133353739

5153555759

J4

PIM:01_PWR:B8_EXP:01PIM:05_PWR:B7_EXP:03PIM:07_PWR:C6_EXP:05PIM:09_PWR:A6_EXP:07PIM:12_PWR:A5_EXP:09

PIM:23_PWR:C35_EXP:11PIM:32_PWR:B33_EXP:13PIM:34_PWR:C32_EXP:15PIM:39_PWR:C31_EXP:17PIM:47_PWR:C28_EXP:19PIM:49_PWR:A28_EXP:21PIM:97_PWR:C9_EXP:23

PIM:13 (MCLR)PIM:80_PWR:A16_EXP:27PIM:84_PWR:C14_EXP:29PIM:88_PWR:C13_EXP:31

PIM:26_PWR:C34_EXP:41

PIM:94_PWR:C11_EXP:45PIM:99_PWR:A9_EXP:47PIM:03_PWR:A8_EXP:49

PIM:18_PWR:B37_EXP:55PIM:59_PWR:B24_EXP:57PIM:52_PWR:A27_EXP:59

DNP

8

424446

2

20

10

4850

18

30

22

12

24

1416

2628

64

3234363840

5254565860

J5

PIM:04_PWR:C7_EXP:02PIM:06_PWR:A7_EXP:04

PIM:50_PWR:C27_EXP:22PIM:61_PWR:C23_EXP:24PIM:78_PWR:C16_EXP:26

PIM:91_PWR:C12_EXP:32PIM:87_PWR:A14_EXP:30

0RR69

DGND

DGND

DGND

0RR70 0RR73

PIM:08_PWR:B6_EXP:06PIM:11_PWR:B5_EXP:08

PIM:19_PWR:A37_EXP:10PIM:29_PWR:C33_EXP:12PIM:33_PWR:A33_EXP:14PIM:38_PWR:A32_EXP:16PIM:40_PWR:B31_EXP:18PIM:48_PWR:B28_EXP:20

PIM:69_PWR:A15_EXP:28

DGND

+5V +5VPIM:27_PWR:B34_EXP:42

DVDD DVDDPIM:93_PWR:A12_EXP:46PIM:98_PWR:B9_EXP:48

PIM:100_PWR:C8_EXP:50

AGND

AVDD AVDD

DGND

PIM:60_PWR:A24_EXP:60

DGND

+5V

DVDD

AGND

AVDD

PIM:08_PWR:B6_EXP:06PIM:11_PWR:B5_EXP:08PIM:19_PWR:A37_EXP:10PIM:29_PWR:C33_EXP:12PIM:33_PWR:A33_EXP:14PIM:38_PWR:A32_EXP:16PIM:40_PWR:B31_EXP:18PIM:48_PWR:B28_EXP:20

PIM:69_PWR:A15_EXP:28

DGND

+5V

DVDD

AVDD

PIM:27_PWR:B34_EXP:42

PIM:93_PWR:A12_EXP:46PIM:98_PWR:B9_EXP:48

PIM:100_PWR:C8_EXP:50

AGNDPIM:41_PWR:A31_EXP:56PIM:51_PWR:B27_EXP:58PIM:60_PWR:A24_EXP:60

DC+ DC+

DC+ DC+

PGNDPGND

(PWR CONNECTOR)

(EXP CONNECTOR)

(PGC)

)DGP()CGP(

(PGD)

5650906-5

B1C2

B2C3

B3C4

B4

C1

C5B5

B6C6

B7C7

C8B8

C9B9

C10B10

C11B11

C12B12

C13B13

C14B14

C15B15

C16B16

C17B17

C18B18

C19B19

C20B20

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

A15

A16

A17

A18

A19

A20

C21B21A21

C22B22A22

C23B23A23

C24B24A24

C25B25A25

C26B26A26

C27B27A27

C28B28A28

C29B29A29

C30B30A30

C31B31A31

C32B32A32

C33B33A33

C34B34A34

C35B35A35

C36B36A36

C37B37A37

C38B38A38

C39B39A39

C40B40A40

J13

NUT #2-56 SS

2

Mounting hardware for J13

SCREW 2-56x.500

2Qty

Qty

All resistors are 1% toleranceunless otherwise specified

2014 Microchip Technology Inc. DS50002263B-page 51

Page 52: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

dsP

IC®

DS

C S

ign

al Bo

ard

DS

50

00

22

63

B-p

ag

e 5

2

20

14

Micro

chip

Te

chn

olo

gy In

c.

powered

PIM:50_PWR:C27_EXP:22PIM:49_PWR:A28_EXP:21

.3k603

68

DNP

1 23 4

5 6

J8DVDD

PIM:87_PWR:A14_EXP:3012_EXP:32 PIM:88_PWR:C13_EXP:31

(DAC CLK)(DAC DATA)

DGND DGND

0RR83

0RR84

1 2DNP

1 2J11J11a

FIGURE A-3: dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 3 OF 5)

Isolated part – USB Powered Unisolated part – DVDD

USBDATAVIEW PORT

4

1

5

2

3

0

J35V_USB

GND_USB

16V0.1 μF0603

C36

16V0.1 μF0603

C34

4.7k0603

R31

5V_USB

USB_PUSB_N

USB_P

USB_N

1k0603

R321k0603

R33

5V_USB

5V_USB

GND_USB

GND_USB

GND_USB

GND_USB5V_USB

GND_USB16V0.1 μF0603

C35

5V_USB

GND_USB

DVDD

16V0.1 μF0603

C37

DVDD

MCP2200_TXMCP2200_RX

GND_USB

VDD1OSC12

OSC23

RST4

GP7/TxLED5GP6/RxLED6

GP57

GP48

GP39TX10 RTS 11RX 12CTS 13GP2 14GP1 15GP0 16VUSB 17D- 18D+ 19VSS 20

MCP2200

U2

GREEN

12

LD7RED

12

LD8

ADUM1201CRZ

VDD11

VOA2

VIB3

GND14

VDD2 8

VIA 7

VOB 6

GND2 5

U3

2

31

12 MHzX1

DGND

DGND

GND_USB

16V0.1 μF0603

C70

12

34

DNP

J6

GND_USB

5V_USB

MCP2200_TXMCP2200_RX

3.3k0603

R6730

R

DVDD DVDD

PIM:91_PWR:C(DAC CS)

J9

Black TPDNP

TP19

GND_USB

All resistors are 1% toleranceunless otherwise specified

ID

VBUS

GND

D-

D+

Page 53: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

Sc

he

matics

an

d L

ayo

ut

2

01

4 M

icroch

ip T

ech

no

log

y Inc.

DS

50

00

22

63

B-p

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3

FIG

DGND

169kR60

15kR62

D

+5V

DGND

105k0603

R71

15kR127

D

DVDD

D

D

10 μF50V1210

C60

10 μF50V1210

C66

GREEN

12

LD5

RED

12

LD6

1k 1%0603

R128

1k0603

R129

DGND

DGND

+5V

DVDD

DNP

R19

DNP

R20

DGND

DNP

R21

DNP

R22

Red TP

TP10

DNPR90

DNPR92

DNPR94

DNPR96

PIM:101_PWR:C24

PIM:103_PWR:C19

PIM:104_PWR:A18

PIM:102_PWR:C21

PIM:101

PIM:103

PIM:104

PIM:102

P93

DNPC94

AGND

Au

URE A-4: dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 4 OF 5)

MCP16301

BO

OST

1G

ND

2

VFB 3EN4

SW 6

VIN5

U4

DGNDDGND DGND

0.1 μF16V 0603

C41 1N4148

D3

22 μH

L1

MBRS1100T3GD5

DGND DGND DGND

40.2k0603

R35

6.49k0603

R61

DGND

Voltage: 5.6V

DGNDDGN

MCP16301

BO

OST

1G

ND

2

VFB 3EN4

SW 6VIN5

U6

DGND

DGND DGND

0.1 μF16V 0603

C611N4148

D6

22 μH

L2

MBRS1100T3G

D38

DGND

DGND DGND

40.2k0603

R64

10k0603

R125

DGND

Voltage: 4V (J18 open)

DGNDDGN

20kR72

24.9kR126

10 μF50V1210

C4210 μF50V1210

C43

10 μF50V1210

C6310 μF50V1210

C62

10 μF50V1210

C5810 μF50V1210

C59

10 μF50V1210

C6410 μF50V1210

C65

1 2 3J14

CLOCAL

CLOCAL

DNP

D4

DGND

DNP

D37

DGND

DVDD AVDDDC+

MRA4005

D39

MRA4005

D40

DCLOCAL

100 Ohm

FB1

1 2J18

1 2J19

DGND

DGND AGND

DNP

R24

DNP

R23

AVDD

AGND

10k0603

R25

10k0603

R26

+A3

-A4

OUTA 1

VSS

VDD

25

MCP6021U1

AVDD

AGND

PIM:28_PWR:A34

Orange TP

TP1

Orange TP

TP2

Red TP

TP3

Red TP

TP9 Red TP

TP6Black TP

TP4

Black TP

TP5

Yellow TP

TP7

Yellow TP

TP8White TP

TP11

0R 1206

R58

0R 1206

R59

0.1 μF060316V

C730.1 μF060316V

C72

0.1 μF060316V

C71

AGND

AGND

AGND

AVDD

JACK Power 2.1 mm Male

231J17

DNPR65

DNPR66

Black TP

TP12

Black TP

TP13

Black TP

TP14

DGND DGND DGND

Black TP

TP15

Black TP

TP16

AGND AGND

DGND

DNP

R74

DNP

R75

DGND

PGND

0R 1206

R130

Black TP

TP18

PGND AGND0R

R29

DGND AGND

1000 pF50V0603

C301k

0603

R81

20R0603

R82

DNP

21

D9

AGND

SMBJ3V3D33

AGND

AVDD

DGND

Black TP

TP20

MCP1826-ADJE/ET

SHDN1

VIN2

GND 3

VOUT4

ADJ5

U5

MCP1826-ADJE/ET

SHDN1

VIN2

GND 3

VOUT4

ADJ5

U7

100 Ohm

FB2

91R 0603

R34

91R 0603

R63

14R0603

R85

14R0603

R86

470 pF50V

0603

C85

470 pF50V

0603

C86

DGND

DGND

10 μF16V

0805

C87

DGND

10 μF16V

0805

C88

DGND

0RR89

0RR91

0RR93

0RR95

DNPC89

AGND

DNPC91

AGND

DNC

AGND

0RR99

0RR100

J14a

J14a defaultJ14 Pins 1 & 2

ll resistors are 1% tolerancenless otherwise specified

Voltage: 5.6V (J18 shorted)

Page 54: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

dsP

IC®

DS

C S

ign

al Bo

ard

DS

50

00

22

63

B-p

ag

e 5

4

20

14

Micro

chip

Te

chn

olo

gy In

c.

LT

LT

BAS40-04

1

23

D31 1k0603

R79PIM:83_PWR:B21_FLTPIM:83_PWR:B21

470 pF50V0603

C81

AGNDAGND

AVDD

06030.1 μF 16V

C80

BAS40-04

1

23

D32 1k0603

R80PIM:84_PWR:C14_EXP:29_FLTPIM:84_PWR:C14_EXP:29

470 pF50V0603

C83

AGND

AGND

AVDD

06030.1 μF 16V

C82

PIM:97_PWR:C9_EXP:231k

0603

R27PIM:97_PWR:C9_EXP:23_FLT

470 pF50V0603

C6

AGND

BAS40-04

1

23

D2

AGND

AVDD

06030.1 μF 16V

C4

0R0603

R38PIM:74_PWR:B18_FLTPIM:74_PWR:B18

DNPC10

AGND

BAS40-04

1

23

D7

AGND

AVDD

06030.1 μF 16V

C31

T

PIM:71_PWR:B190R

0603

R49PIM:71_PWR:B19_FLT

DNPC21

AGND

BAS40-04

1

23

D25

AGND

AVDD

06030.1 μF 16V

C56

0R

R48PIM:69_PWR:A15_EXP:28_FLTPIM:69_PWR:A15_EXP:28

DNPC20

AGND

BAS40-04

1

23

D24

AGND

AVDD

06030.1 μF 16V

C55

T

FIGURE A-5: dsPIC® DSC SIGNAL BOARD SCHEMATIC REVISION 1.0 (SHEET 5 OF 5)

BAS40-04

1

23

D28 1k0603

R76PIM:76_PWR:B17_FLTPIM:76_PWR:B17

470 pF50V0603

C75

AGNDAGND

AVDD

06030.1 μF 16V

C74

BAS40-04

1

23

D29 0R0603

R77PIM:77_PWR:A17_FPIM:77_PWR:A17

DNPC77

AGNDAGND

AVDD

06030.1 μF 16V

C76

BAS40-04

1

23

D30 1k0603

R78PIM:79_PWR:B16_FPIM:79_PWR:B16

470 pF50V0603

C79

AGNDAGND

AVDD

06030.1 μF 16V

C78

BAS40-04

1

23

D1 0R0603

R36PIM:73_PWR:C18_FLPIM:73_PWR:C18

DNPC8

AGNDAGND

AVDD

06030.1 μF 16V

C29

0R0603

R46PIM:67_PWR:B22_FLPIM:67_PWR:B22

DNPC18

AGND

BAS40-04

1

23

D23

AGND

AVDD

06030.1 μF 16V

C54

0R0603

R44PIM:66_PWR:C22_FLTPIM:66_PWR:C22

DNPC16

AGND

BAS40-04

1

23

D22

AGND

AVDD

06030.1 μF 16V

C53

0R0603

R50PIM:56_PWR:C25_FLTPIM:56_PWR:C25

DNPC22

AGND

BAS40-04

1

23

D20

AGND

AVDD

0R0603

R51PIM:57_PWR:B25_FLTPIM:57_PWR:B25

DNPC23

AGND

BAS40-04

1

23

D21

AGND

AVDD

06030.1 μF 16V

C51

06030.1 μF 16V

C52

PIM:54_PWR:B261k

0603

R45PIM:54_PWR:B26_FLT

470 pF50V0603

C17

AGND

BAS40-04

1

23

D12

AGND

AVDD

PIM:55_PWR:A260R

0603

R47PIM:55_PWR:A26_FLT

DNPC19

AGND

BAS40-04

1

23

D15

AGND

AVDD

06030.1 μF 16V

C46

06030.1 μF 16V

C40

AGND

1k0603

R39PIM:32_PWR:B33_EXP:13 PIM:32_PWR:B33_EXP:13_FLT

470 pF50V0603

C11

BAS40-04

1

23

D17

AGND

AVDD

1k0603

R52PIM:35_PWR:B32_FLTPIM:35_PWR:B32

470 pF50V0603

C24

AGND

BAS40-04

1

23

D19

AGND

AVDD

06030.1 μF 16V

C48

06030.1 μF 16V

C50

AGND

1k0603

R28

470 pF50V0603

C5

PIM:23_PWR:C35_EXP:11 PIM:23_PWR:C35_EXP:11_FLT

BAS40-04

1

23

D8

AGND

AVDD

AGND

1k0603

R30PIM:24_PWR:B35

470 pF50V0603

C7

PIM:24_PWR:B35_FLT

BAS40-04

1

23

D11

AGND

AVDD

AGND

1%1k

0603

R37

470 pF50V0603

C9

PIM:25_PWR:A35 PIM:25_PWR:A35_FLT

BAS40-04

1

23

D14

AGND

AVDD

06030.1 μF 16V

C32

06030.1 μF 16V

C39

06030.1 μF 16V

C45

1k0603

R42PIM:17_PWR:C37_FLTPIM:17_PWR:C37

470 pF50V0603

C14

AGND

BAS40-04

1

23

D10

AGND

AVDD

1k0603

R43PIM:20_PWR:C36_FLTPIM:20_PWR:C36

470 pF50V0603

C15

AGND

BAS40-04

1

23

D13

AGND

AVDD

1k0603

R40PIM:21_PWR:B36_FLTPIM:21_PWR:B36

470 pF50V0603

C12

AGND

BAS40-04

1

23

D16

AGND

AVDD

PIM:22_PWR:A361k

0603

R41PIM:22_PWR:A36_FLT

470 pF50V0603

C13

AGND

BAS40-04

1

23

D18

AGND

AVDD

06030.1 μF 16V

C38

06030.1 μF 16V

C44

06030.1 μF 16V

C47

06030.1 μF 16V

C49

1k0603

R56PIM:11_PWR:B5_EXP:08_FLTPIM:11_PWR:B5_EXP:08

470 pF50V0603

C67

AGND

BAS40-04

1

23

D26

AGND

AVDD

1k0603

R57PIM:14_PWR:A38_FLTPIM:14_PWR:A38

470 pF50V0603

C69

AGND

BAS40-04

1

23

D27

AGND

AVDD

06030.1 μF 16V

C57

06030.1 μF 16V

C68

0R0603

R88PIM:81_PWR:C15_FLTPIM:81_PWR:C15

DNPC90

AGND

BAS40-04

1

23

D35

AGND

AVDD

06030.1 μF 16V

C92

All resistors are 1% toleranceunless otherwise specified

Page 55: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

Schematics and Layout

FIGURE A-6: dsPIC® DSC SIGNAL BOARD LAYOUT

2014 Microchip Technology Inc. DS50002263B-page 55

Page 56: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

dsPIC® DSC Signal Board

NOTES:

DS50002263B-page 56 2014 Microchip Technology Inc.

Page 57: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

dsPIC® DSC SIGNAL BOARD

USER’S GUIDE

Appendix B. Electrical Specifications

B.1 INTRODUCTION

This chapter provides the electrical specifications of the dsPIC® DSC Signal Board (see Table B-1).

TABLE B-1: ELECTRICAL SPECIFICATIONS

Parameter Operating Range

Input DC Voltage 10V-24V ±10% (9V-26.4V)

Input DC Voltage (Connector J17) 24V

Operating Temperature Ambient +25°C

Output Power Supply 1 5V ±0.5% (4.975V-5.025V)

Output Power Supply 2 3.3V ±0.5% (3.316V-3.283V) or 5V ±0.5% (4.975V-5.025V)

Current from Power Supply 1 (Fixed +5V) 0-600 mA

Current from Power Supply 2 (+3.3V or +5V) 0-600 mA

2014 Microchip Technology Inc. DS50002263B-page 57

Page 58: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

dsPIC® DSC Signal Board

NOTES:

DS50002263B-page 58 2014 Microchip Technology Inc.

Page 59: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

dsPIC® DSC SIGNAL BOARD

USER’S GUIDE

Appendix C. Design Calculations

C.1 INTRODUCTION

This chapter provides detailed information on the Power Supply 1 and Power Supply 2 design. Power Supply 1 has a fixed output of +5V, whereas the output of Power Supply 2 is configurable. Power Supply 1 and Power Supply 2 have the same power supply circuits. Power Supply 2 also has a parallel resistor RPIM in its feedback circuit for reconfiguring the output voltage.

C.2 DESIGN OF POWER SUPPLY CIRCUIT

The power supply circuit is designed in the following two stages:

1. First Stage of Power Supply Circuit Design

2. Second Stage of Power Supply Circuit Design

C.2.1 First Stage of Power Supply Circuit Design

The first stage of the power supply is a synchronous step-down converter (see Figure C-1). The Stage 1 power supply has the following specifications:

• Input Voltage (DC+) = 9V-26.4V

• Output Voltage (VBUCK) = 4V when Connector J18 is open

• Output Voltage (VBUCK) = 5.6V when Connector J18 is connected

FIGURE C-1: STAGE 1 POWER SUPPLY (APPLICATION CIRCUIT AROUND MCP16301)

The component values used in this circuit are listed in Table C-1, and were chosenusing Equation C-1 with VFB = 0.8V and K = 0.22V/H (see Note 1 in Table C-1).

L

COUT

CB

RSNU

RBOT1

RTOP1

RPIM1

RBOOST

CSNU

DB

DCIN

DCLOCAL(1) VIN

EN

SW

VFB

BOOST

GND

MCP16301

VBUCK

J18

Note 1: DCLOCAL comes from J17 or DC+.

2014 Microchip Technology Inc. DS50002263B-page 59

Page 60: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

dsPIC® DSC Signal Board

EQUATION C-1:

A low forward drop Schottky diode is used for freewheeling diode D. The average diode current is calculated using Equation C-2. Based on these calculations, a MBRS1100T3G Schottky diode is selected.

EQUATION C-2:

A standard 1N4148 ultra-fast diode for boost diode DB was selected based on recom-mendations from the “MCP16301/H High-Voltage Input Integrated Switch Step-Down Regulator Data Sheet” (DS20005004). For more information about the snubber circuits, RSNU and CSNU, and series boost resistor, RBOOST, refer to AN1466, “Reduction of the High-Frequency Switching Noise in the MCP16301 High-Voltage Buck Converter” (DS01466) application note.

TABLE C-1: STAGE 1 POWER SUPPLY COMPONENT VALUES

Designator Power Supply 1 Power Supply 2

RTOP1 R35 = 40.2 k R64 = 40.2 k

RBOT1 R61 = 6.49 k R125 = 10 k

RPIM1 — R72 = 20 k

L L1 = 22 µH(1) L2 = 22 µH(1)

CB C41 = 0.1 µF(1) C61 = 0.1 µF(1)

CIN C42 = C43 = 10 µF(1) C62 = C63 = 10 µF(1)

COUT C58 = C59 = 10 µF(1) C64 = C65 = 10 µF(1)

VBUCK 5.6V +4V (J18 open) +5.6V (J18 shorted)

Note 1: These components are selected based on recommendations from the “MCP16301/H High-Voltage Input Integrated Switch Step-Down Regulator Data Sheet” (DS20005004).

RTOP1 RBOT1VBUCK

VFB---------------- 1– =

K VBUCK L=

ID AVG 1VBUCK

DCLOCAL-----------------------------–

IOUT=

DS50002263B-page 60 2014 Microchip Technology Inc.

Page 61: dsPIC DSC Signal Board User's Guideww1.microchip.com/downloads/en/DeviceDoc/50002263b.pdf · 2014-08-19 · dsPIC® DSC SIGNAL BOARD USER’S GUIDE 2014 Microchip Technology Inc

Design Calculations

C.2.2 Second Stage of Power Supply Circuit Design

The second stage of the power supply is designed around a Low Dropout (LDO)MCP1826 (see Figure C-2). The second stage of the power supply has the followingspecifications:

• Input Voltage (VBUCK) = +4V (J18 is open) or +5.6V (J18 is shorted)

• Output Voltage (DVDD) = +3.3V when connector, J19, is open

• Output Voltage (DVDD) = +5V when connector, J19, is connected

FIGURE C-2: STAGE 2 POWER SUPPLY (APPLICATION CIRCUIT AROUND MCP1826)

If VADJ = 0.41V, then by using Equation C-3, the user can configure the component values as provided in Table C-2 for the application circuit shown in Figure C-2.

EQUATION C-3:

TABLE C-2: STAGE 2 POWER SUPPLY COMPONENT VALUES

Designator Power Supply 1 Power Supply 2

RTOP2 R60 = 169 k R71 = 105 k

RBOT2 R62 = 15 k R127 = 15 k

RPIM2 — R126 = 24.9 k

VOUT 5 V +3.3V (J19 open)+5V (J19 shorted)

CIN C87 = 10 µF(1) C88 = 10 µF(1)

COUT C60 = 10 µF(1) C66 = 10 µF(1)

Note 1: These components are selected based on the recommendations from the“MCP1826/MCP1826S 1000 mA, Low-Voltage, Low Quiescent Current LDO Regulator Data Sheet” (DS22057).

COUT

RPIM2

CIN

VBUCK VIN

SHDNVOUT

ADJ

GND

MCP1826-ADJ

DVDD

J19

RTOP2

RBOT2

DVDD VADJ

RTOP2 RBOT2+

RBOT2------------------------------------- =

2014 Microchip Technology Inc. DS50002263B-page 61

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DS50002263B-page 62 2014 Microchip Technology Inc.

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