Demonstration System EPC9151 Quick Start Guide - epc-co.com

Demonstration System EPC9151 Quick Start Guide18–60 V Input, 12 V, 25 A Output (Buck)12–15 V Input, 48 V, 5.5 A Output (Boost)300 W 1/16 th Brick Evaluation Module

Revision 1.0

http://epc-co.com/epc

QUICK START GUIDE Demonstration System EPC9151

EPC – POWER CONVERSION TECHNOLOGY LEADER | EPC-CO.COM | ©2020 | | 2

DESCRIPTION The EPC9151 1/16th brick evaluation power module is designed for 48 V to/from 12 V DC-DC applications. It features the EPC2152 ePower™ stage – enhancement mode eGaN® field effect transistors (FETs) with integrated gate drivers, as well as the Microchip dsPIC33CK32MP102 16-bit digital controller. Other features include:

• High efficiency: 95% @ 12 V/25 A output (buck) 95% @ 48 V/5.5 A output (boost) • Dimension: 33 mm x 22.9 mm x 9 mm (1.30 in. x 0.90 in. x 0.35 in.)• Industry standard footprint and pinout• Power good output• Constant switching frequency: 500 kHz• Remote output voltage sense (buck)• Re-programmable – Average current mode control (default) • Fault protection: o Input undervoltage o Input overvoltage o Regulation error

o Inductor overcurrent

REGULATORY INFORMATION This power module is for evaluation purposes only. It is not a full-featured power module and cannot be used in final products. No EMI test was conducted. It is not FCC approved.

FIRMWARE UPDATES The module is programmed as a Buck converter by default. To change to Boost converter, please re-program the module with the boost firmware. Using the incorrect firmware could result in damage.

Every effort has been made to ensure all control features function as specified. It may be necessary to provide updates to the firmware. Please check the EPC and Microchip websites for the latest firmware updates.

EPC9151 top view

EPC9151 bottom view

Table 1: Maximum RatingsSymbol Parameter Conditions Min Max Units

VIN Input voltageBuck 65

VBoost 17

IOUT Output currentBuck 25

ABoost 5.5

TCOperating

temperature

Measured at FET case as indicated in thermal measurement figure,

airflow 1700 LFM 100 °C



TYPICAL EFFICIENCY AND POWER LOSS96

94

92

90

88

E�ci

ency

(%)

IOUT (A)0 5 10 15 20 25

16

14

12

10

8

6

4

2

Loss

(W)

IOUT (A)0 5 10 15 20 25

400 LFM

1700 LFM400 LFM

1700 LFM

96

94

92

90

88

E�ci

ency

(%)

IOUT (A)0 1 2 3 4 5 6 0 1 2 3 4 5 6

16

14

12

10

8

6

4

2

Loss

(W)

IOUT (A)

9151 Boost,1700 LFM 9151 Boost,

1700 LFM

Figure 1. 48 V input, 12 V output (Buck)

Figure 2. 12 V input, 48 V output (Boost)

Table 2: Electrical CharacteristicsSymbol Parameter Conditions Min Typ Max Units

VIN Input voltageBuck 18 48 60

V

Boost, during operation 11.3 12 15Boost, start up 12.3 12.5 15

VIN,on Input UVLO turn on voltageBuck 18Boost 12.3

VIN,off Input UVLO turn off voltageBuck 17.5Boost 11.3

VOUT Output voltageBuck 5 12 15Boost 20 48 50

COUT External capacitance loadBuck 200 550

uFBoost 47

tOUT,rise Output voltage rise time 100 ms

ΔVOUT Output voltage rippleBuck, IOUT = 25 A, COUT = 200 μF 100

mVBoost, IOUT = 5.5 A, COUT = 47 μF 600

IOUT Output currentBuck 0 25

ABoost 0 5.5

IOUT,limit Output current limit thresholdBuck 26 27Boost 6 6.8

fs Switching frequency 500 kHzOn/off control input logic

Von /Voff Function not available Not implemented 0 3.3 VPower good output logic

Pgood Logic high (in regulation) 2.6 3.1 3.3VPgood Logic low (not regulated) 0 0.25 0.7



ELECTRICAL PERFORMANCE

Typical output voltage ripple

Typical transient response

Figure 3: VIN = 48 V, VOUT = 12 V, IOUT = 25 A (Buck)

Figure 5: VIN = 48 V, VOUT = 12 V, output 50% (12.5 A) to100% (25 A), 250 Hz transitions (Buck)

Figure 4: VIN = 12 V, VOUT = 48 V, IOUT = 5.5 A (Boost)

Figure 6: VIN = 12 V, VOUT = 48 V, output 45% (2.5 A) to 90% (5 A), 250 Hz transitions (Boost)

1 μs/div50 mV/div

1 μs/div200 mV/div

1 ms/div500 mV/div

5 A/div

1 ms/div 2 V/div2 A/div

VOUT

IOUT

VOUT

IOUT

25 A

12.5 A2.5 A

5 A

Figure 7: VIN = 48 V (Buck) Figure 8: VIN = 12 V (Boost)

Power Good (Pin 5)

VOUT

100 ms/div4 V/div2 V/div

Power Good (Pin 5)

VOUT

100 ms/div10 V/div

2 V/div

Startup waveform



ELECTRICAL PERFORMANCE (continued)

Temperature vs. output current

Figure 9: VIN = 48 V, VOUT = 12 V (Buck)

Figure 11: VIN = 48 V, VOUT = 12 V, 1700 LFM, Buck

Figure 10: VIN = 12 V, VOUT = 48 V (Boost)

Figure 12: VIN = 12 V, VOUT = 48 V, 1700 LFM, Boost

12.14

12.13

12.12

12.11

12.10

12.09

12.08

V OUT

(V)

IOUT (A)0 5 10 15 20 25

48.30

48.25

48.20

48.15

48.10

V OUT

(V)

IOUT (A)0 1 2 3 4 5 6

100

90

80

70

60

50

40

Tem

pera

ture

(°C)

Tem

pera

ture

(°C)

100

90

80

70

60

50

400 1 2 3 4 5 6

IOUT (A)IOUT (A)0 5 10 15 20 25

Typical load regulation



Power good

This module features a power good signal with 3.3 V logic. This signal will be logic high when the output voltage is regulated to +/- 10% of the set point; and logic low for all other conditions. The maximum sink/source current on this pin is 6 mA. If the power good feature is not used, the pin should be left floating.

Output voltage trim (adjustment)

For Buck mode only: the output voltage of this module can be trimmed (adjusted) by connecting an external resistor between the Trim pin and Vout- (GND) pin. The new output voltage can be calculated as follows:

For this design, VFB is 2.5 V, RFB1 is 18 kΩ, RFB2 is 4.75 kΩ, therefore

The maximum trim voltage is 1 V using this method. It is recom-mended to re-program the controller to further change the output voltage set point.

R1

8 Vout+

RFB1

RFB2

VFB

7 Sense+

6 Trim

4 Vout–(GND)

FB1FBOUT RFB2R1V FBV( )V = R1

1+ +

OUT R1 [kΩ]4512V = +

OPERATING CONSIDERATIONS

Buck/Boost Modes

The module is programmed with Buck mode by default. To operate as a Boost converter, please download the firmware for Boost mode and re-program the module. In Boost mode, input voltage (12 V) is supplied to the Vout+ pin, and the output is at the Vin+ pin.

Output capacitance

Minimum external output capacitance of 200 μF is required for stability. The maximum capacitance tested is 550 μF. The EPC9531 test fixture includes this extra capacitance.

Input capacitance

To minimize the impact from the input voltage feeding line, low-ESR capacitors should be located at the input to the module. It is recommended that a 33 μF–100 μF input capacitor be placed near the module. This will also be the external output capacitance in boost mode.

Over-current protection

If the load current exceeds a pre-determined maximum setpoint, this condition will be regarded as a fault condition and the module will shut down. The module will then attempt to restart after 2 seconds. This shut down and restart cycle will continue until the over-current condition clears.

Remote On/Off

This feature is not implemented for this module. Please leave EN pin floating.

Remote sense

For Buck mode only: remote sense can compensate for output voltage distribution drops by sensing the actual output voltage at the point of load. The maximum voltage allowed between the output and sense pins is 5% of the output voltage (0.6 V for 12 V output). If the remote sense feature is not used, the pin can be either left floating or connected to Vout+.

Figure 13. External resistor connection for output voltage trim adjust.



CONTROLLERThe EPC9151|1/16th brick evaluation power module features a Microchip dsPIC33CK32MP102 Digital Signal Controller (DSC). This 100 MHz single core device is equipped with dedicated peripheral modules for Switched-Mode Power Supply (SMPS) applications, such as a feature-rich 4-channel (8x output), 250 ps resolution pulse-width modulation (PWM) logic, three 3.5 Msps Analog-To-Digital Converters (ADC), three 15 ns propagation delay analog comparators with integrated Digital-To-Analog Converters (DAC) supporting ramp signal generation, three operational amplifiers as well as Digital Signal Processing (DSP) core with tightly coupled data paths for high-performance real-time control applications. The device used is the smallest derivative of the dsPIC33CK single core and dsPIC33CH dual core DSC families. The device used in this design comes in a 28 pin 6x6 mm UQFN package, specified for ambient temperatures from -40 to +125° C. Other packages including a 28 pin UQFN package with only 4x4 mm are available.

The dsPIC33CK device is used to drive and control the converter in a fully digital fashion where the feedback loops are implemented and executed in software. Migrating control loop execution from analog circuits to embedded software enhances the flexibility in terms of applied control laws as well as making modifications to the feedback loop and control signals during runtime, optimizing control schemes and adapting control accuracy and performance to most recent operating conditions. As a result, digital control allows users to tailor

the behavior of the converter to application specific requirements without the need for modifying hardware.

There are two firmware versions available for the EPC9151 1/16th brick evaluation power module in buck mode: average current mode control (ACMC) and adaptive voltage mode control (AVMC). For the boost mode, only ACMC is available.

• Conventional, Robust Average Current Mode Control (ACMC) (figure 14): With this firmware the power converter is controlled by one outer voltage loop providing a shared reference to two independent inner average current loops controlling the phase current of each converter phase. This conventional approach ensures proper current balancing between both phases of this interleaved converter, operating 180° out of phase to minimize the input current ripple and filtering. The inner current loops are adjusted to average cross-over frequencies of 10 kHz. To balance the current reference perturbation of the inner current loops, the outer voltage loop has been adjusted to an average cross-over frequency of 2 kHz, which determines the overall response time of the converter.

For Buck mode only:

• Adaptive Type IV Voltage Mode Control (AVMC) with featuring Adaptive Gain Control (AGC) and Phase Current Balancing PWM Steering (figure 15): The second, alternative firmware is tailored to intermediate bus converter module applications in power distribution networks (PDN). The major focus of this firmware lies on reducing PDN segment decoupling capacitance by maximizing the control bandwidth and the output impedance tuning capabilities, enhancing system robustness while minimizing cost.

Figure 14. Interleaved buck converter average current mode control

Figure 15. Interleaved buck converter advanced voltage mode control

ADC

REF error HC(z)

Compensator

output

VoltageDivider

ADC

REF error Gp(s)(Plant A)PWM

output

CurrentSense Amp

Voltage Loop

Current Loop A

IOUT

VOUT

input

input

Anti-Windup

+ –

HC(z)Compensator

Current Loop B

+ –

REF

ADC

error PWMoutput

CurrentSense Amp

IOUT

input

HC(z)Compensator+ –

Gp(s)(Plant B)

input ADC

VoltageDivider

ADC

Current Sense A

Current Feedback(10 kHz state machine)

ADCAdaptive Gain Control (AGC)

PWMDistribution

output

Current Sense B

ADC

O�set Compare

Voltage Feedback(500 kHz cycle-by-cycle control)

Anti-Windup

Gp(s)(Plant B)

Gp(s)(Plant A)+/–

REF error

+ –

VOUT

IPH_A IPH_B

VIN

HC(z)Compensator Voltage

Divider



PROGRAMMINGThe Microchip dsPIC33CK controller can be re-programmed using the in-circuit serial programming port (ICSP) available on the RJ-11 programming interface. It supports all of Microchip’s in-circuit programmers/debuggers, such as MPLAB® ICD4, MPLAB® REAL ICE or MPLAB® PICkit4 and previous derivatives.

Development tools: https://www.microchip.com/development-tools

Programming with HEX file

Download the latest MPLAB IPE from Microchip website and follow the steps below: https://www.microchip.com/mplab/mplab-integrated-programming-environment

1 Enable Advanced Mode:

2 Select Device: dsPIC33CK32MP102 and then apply:

3 Select programming tool and then connect: 5 Erase device, and then program device:

4 Click ‘Browse’ to select the provided .hex file:

① Erase② Program

C:\XXX\...\*.HEX

Optional: Enable ‘Power target circuit from programming tool’ from left panel ‘power’ tab so that no additional power supply is necessary during programming:

https://www.microchip.com/development-tools

https://www.microchip.com/mplab/mplab-integrated-programming-environment



MECHNICAL SPECIFICATIONS

Pin 1 Chamfer

Note: Dimensions are in mm (inches)

Pin 1

Pin 4

Top view

Front view

Bottom view

22.9 (0.90)

33.0 (1.30)

9.0 (0.35)

3.8 (0.15)

Figure 16. EPC9151 mechanical dimensions

Figure 17. Pin assignment

8 Vout+

7 Sense+

6 Trim

5 Power good

4 Vout–(GND)

8

7

6

5

4

Microchip Programming /Communication Interface

1

2

3

2 On/O� (Not used)

1 Vin+

3 Vin– (GND)

MCLR 3.3 V GND PGD PGC

Top view Bottom view



THERMAL MANAGEMENTThermal management is very important to ensure proper and reliable operation. Sufficient cooling is required for this module to operate in the full specified output current range. Forced air of 1700 LFM is used for specification testing.

Heatsink or heat spreader can also be used.

The hot spots are the GaN ICs (U1 and U2) as shown in figure 18.

U1

U1

U2U2

Figure 18. VIN = 48 V, VOUT = 12 V, 1700 LFM forced air cooling

Thermal derating

Without sufficient cooling, the output current capability is reduced. The module temperature should be monitored to ensure the maximum temperature does not exceed the rating. Especially when the input voltage is higher than 48 V, the maximum output current is reduced.



Table 3: Bill of Materials

Item Qty Reference Part Description Manufacturer Part #

1 14 C1, C2, C3, C9, C11, C15, C16, C19, C21, C26, C31, C35, C48, C51 1 μF, 100 V TDK C2012X7S2A105M125AB

2 10 C5, C6, C7, C8, C10, C27, C28, C29, C30, C37 22 μF, 25 V Murata GRT21BR61E226ME13L

3 16 C12, C13, C20, C23, C24, C25, C32, C36, C40, C41, C42, C43, C44, C45, C46, C47 220 nF, 100 V Taiyo Yuden HMK107C7224

4 7 C14, C22, C38, C49, C50, C62, C65 0.1 μF, 25 V Yageo CC0402KRX7R8BB104

5 2 C17, C18 2.2 μF, 25 V Murata GRM155R61E225KE11D

6 2 C33, C34 1 nF, 25 V Murata GRM1555C1E102JA01D

7 1 C39 10 nF, 25 V Kemet C0402C103K4RECAUTO

8 2 C60, C63 51pF, 50 V Murata GRM1555C1H510JA01D

9 2 C61, C64 2.2 μF, 25 V Murata GRM155R61E225ME15D

10 2 C67, C69 10 nF, 50 V Murata GRM155R71H103KA88D

11 1 C68 220pF, 50 V Kemet C0402C221K5RACTU

12 1 C90 0.22 μF, 100 V Taiyo Yuden HMK107C7224KAHTE

13 1 C91 1 μF, 16 V TDK C1005X6S1C105K050BC

14 1 C92 10 nF, 100 V TDK C1005X7S2A103K050BB

15 1 C93 10 μF, 16 V Murata GRM188R61C106KAALD

16 1 C94 3300pF, 100 V TDK CGA2B3X7S2A332M050BB

17 1 C95 0.1 μF, 50 V Murata GRM155R71H104KE14J

18 2 C96, C98 1 μF, 25 V Murata GRT155R61E105ME01D

19 1 C97 22 μF, 6.3 V Samsung CL05A226MQ5N6J8

20 2 D1, D2 80 V, 125 mA Diodes 1N4448HLP-7

21 6 J1, J2, TP1, TP2, TP9, TP10 .040 dia pin Mill-Max 3102-1-00-21-00-00-08-0

22 1 J3 1 mm Header Molex 5013310507

23 2 J4, J5 .062 dia pin Mill-Max 3144-1-00-15-00-00-08-0

24 2 L1, L2 2.4 μH TDK B82559A0242A013

25 1 L90 220 μH 190 mA Taiyo Yuden CBC3225T221KR

26 1 L91 10 μH Taiyo Yuden CBC2016T100M

27 1 R1 6.8 k Yageo RC0402JR-076K8L

28 4 R2, R3, R4, R5 10 Ω Panasonic ERJ-2RKF10R0X

29 1 R20 20 Ω Yageo RC0402FR-0720RL

30 1 R21 110 k Panasonic RC0603FR-07110KL

31 1 R22 4.87 k Panasonic ERA-2AEB4871X

32 1 R23 18 k Panasonic ERA-2AEB183X


34 1 R26 Ferrite Bead 180 Ω 1 LN Murata BLM18PG181SN1D

35 4 R32, R33, R34, R35 22 k Yageo RC0402JR-0722KL

36 2 R61, R62 1 mΩ Susumu KRL2012E-M-R001-J-T5

37 1 R63 10 k Yageo RC0402JR-0710KL

38 2 R64, R65 20 Ω Yageo RC0402FR-0720RL

39 1 R90 300 k Stackpole RMCF0603FT300K



42 1 R94 51 k Stackpole RMCF0603FT51K0

43 1 R95 0 Ω Yageo RC0402JR-070RL

44 1 R98 16.5 k Yageo RC0402FR-0716K5L

45 1 R99 86.6 k Yageo RC0603FR-0786K6L

46 2 U1, U2 80 V, 10 mΩ EPC EPC2152

47 1 U20 dsPIC Microchip DSPIC33CK32MP102-E/2N

48 2 U61, U62 current sense amplifier Microchip MCP6C02T-050E/CHY

49 1 U90 Buck Regulator 100 V, 300 mA Texas Instruments LM5018SD/NOPB

50 1 U91 IC REG BUCK 3.3 V TI TPS62177DQCR

QUICK START GUIDEDem

onstration System EPC9151

EPC – POWER CONVERSION TECHNOLOGY LEADER | EPC-CO.COM

| ©2020 |

| 12

Figure 19: EPC9151 Controller schematic

.040 dia pin

1

TP1PG

J4

J5

PGND

J1

J2

VIN

PGND

.040 dia pin

1

TP2EN

.040 dia pin

1

TP9VOUTS

.040 dia pin

1

TP10

16.5 kR98

86.6 kR99

300 k

R90

VIN_D

0.22 μF, 100 VC90

220 μH 190 mA

L90

1 uF, 16 VC91

10 nF, 100 VC92

0.1 uF, 50 VC95

31.6 kR92

3.65 kR91

10 μF, 16 VC93

VCC12V

3V3PGND

AVDDPGND3V3

0.1 μF, 25 VC49

3V3

0.1 μF, 25 VC38

AVDD

1 2Ferrite Bead 180 Ω 1 LN

R26

22 μF, 6.3 VC97

1 uF, 25 VC96

0 Ω

R95VCC12V

1

26

4

5

3GM1

GM2

RM 3 V OUT

V REF

V IM

V IP

V SS

V DDU61

MCP6C02T -050E/CHY

51 pF, 50 VC60

3V3

0.1 μF, 25 VC62

2.2 μF, 25 VC61

ISENSE1

ISENSE1 3V3 3V3

1

26

4

5

3GM1

GM2

RM 3 V OUT

V REF

V IM

V IP

V SS

V DDU62

MCP6C02T -050E/CHY

51 pF, 50 VC63

3V3

0.1 μF, 25 VC65

2.2 μF, 25 VC64

ISENSE2

ISENSE2 3V3 3V3

1 nF, 25 VC34

1 10 kR21

4.87 kR22

1 nF, 25 VC33

VIN_SNS

VIN

4.75 kR24

18 kR23

20 ΩR20

VOUT_SNS

VOUTS

VOUT

CS2+VOUT

CS1+VOUT

VOUT

VOUT_SNS

VIN_D

VIN_D

51 k

R943300 pF, 100 V

C94

12 V Supply

3.3V Supply

Program ming Port

fs: 400 kHz

1μF, 25 VC98

12345

J3DNP

PGCPGDPGND3V3MCLR

1

Reg

Timer

7

UVLO

Logic

2

Gnd

Vin

Ilim

8

6

SD

RonSW

3

4

FB5

1.225V

1.62V OV

1.225V

VCC

BST0.66V

20µA

U90LM5018SD/NOPB

6.8 k

12

R1

3V3

MCLR

PGND

IREF

IREF

IREFDAC

MCLR

RP46/PWM1H/RB141

RP47/PWM1L/RB152

/MCLR3

OA1OUT/AN0/CMP1A/IBIAS0/RA04

OA1IN-/ANA1/RA15

OA1IN+ /AN9/RA26

DACOUT/AN3/CMP1C/RA37

AN4/CMP3B/IBIAS3/RA48

AVDD9

AVSS10

VDD11

VSS12

OSCI/CLKI/AN5/RP32/RB013

OSCO/CLKO/AN6/RP33/RB114 OA2OUT/AN1/AN7/ANA0/CMP1D/CMP2D/CMP3D/RP34/INT0/RB2 15PGD2/OA2IN-/AN8/RP35/RB3 16

PGC2/OA2IN+ /RP36/RB4 17PGD3/RP37/SDA2/RB5 18PGC3/RP38/SCL2/RB6 19

TDO/AN2/CMP3A/RP39/RB7 20PGD1/AN10/RP40/SCL1/RB8 21PGC1/AN1 1/RP41/SDA1/RB9 22

VSS 23VDD 24

TMS/RP42/PWM3H/RB10 25TCK/RP43/PWM3L/RB1 1 26TDI/RP44/PWM2H/RB12 27

RP45/PWM2L/RB13 28U20

DSPIC33CK32MP102-E/2N

10 nF, 25 VC39

0.1 μF, 25 VC50

3V33V3

IREF

OA2IN+

20 Ω

R64

20 Ω

R65

IREFDAC OA2IN+

220 pF, 50 VC68

10 k1 2R63

PGD

PWM1LPWM1H

PG

PGC

PWM2HPWM2L

9

27

16

4

3

8

10

5

HS lim

G ate

Drive

Power

Control

Direct control

C ompens ation&

Com p

EA+

-

Com p Timer ton to�

DCS -Contr ol

S leepContr ol

Control

Logic

PGN

DV

INPG

EN

NC

SLEEP

V OS

FB

AGND

SW

11

Ex Pad

U91TPS62177DQCR

3V310 μH

L91 3V3

3V3

3V3 100 mA max.

VOUT_SNS

ISENSE1ISENSE2

D1 D2

VIN VOUT

VIN_D

UVLO Setting: 8 V on, 1.7 V hystersis

EN

VIN_SNS

PGND

Diode OR

QUICK START GUIDEDem

onstration System EPC9151

EPC – POWER CONVERSION TECHNOLOGY LEADER | EPC-CO.COM

| ©2020 |

| 13

Figure 20: EPC9151 Power Stage schematic

0.1uF, 25VC14

SW1

PWM1H

0.1uF, 25 VC22

SW2

PWM2H

PWM2L

VOUT

2.4 μH

L1

B82559A0242A013 1 mΩ

R61SW1

PGND

10 nF, 50 VC67

PGND

VOUT

2.4 μH

L2

B82559A0242A0131 mΩ

R62

PGND

10 nF, 50 VC69

PGND

VINVIN VINVIN VIN VIN VINVIN

1uF, 100VC19

1uF, 100VC21

1uF, 100VC35C23

220 nF, 100 V 220 nF, 100 V 220 nF, 100 V 220 nF, 100 V 220 nF, 100 V 220 nF, 100 V 220 nF, 100 V 220 nF, 100 V

220 nF, 100 V 220 nF, 100 V 220 nF, 100 V 220 nF, 100 V 220 nF, 100 V 220 nF, 100 V 220 nF, 100 V 220 nF, 100 V

C44 C45 C46 C47

VINVIN VIN VINVIN

C20C40 C41 C42 C43

1uF, 100VC2

1uF, 100VC3

1uF, 100VC1

VIN VIN VIN

VOUT

22 μF, 25 VC5

22 μF, 25 VC6

22 μF, 25 VC7

22 μF, 25 VC8

22 μF, 25 V

22 μF, 25 V 22 μF, 25 V 22 μF, 25 V 22 μF, 25 V 22 μF, 25 V

C10

VOUT

C37C27 C28 C29 C30

22 kR32

22 kR33

PWM1L

22 kR34

22 kR35

VIN

C12

VIN

C13

VIN

1uF, 100VC9

VIN

1uF, 100VC11

1uF, 100VC15

VIN

1uF, 100VC16

VIN

2 1

8

5,9

3

4

Logic

UVLO

Level OutputDriver

OutputDriver

Shift

+

Vdd12

Vdd12FSync

Vin

Vdd12

HSin

LSin

Vss Vss

SW

POR+

boot

10,116,7

8,12

U1

EPC2152

10 Ω1 2

R2

2.2 μF, 25 VC17

10 Ω1 2

R3

VIN

2 1

8

5,9

3

4

Logic

UVLO

Level OutputDriver

OutputDriver

Shift

+

Vdd12

Vdd12FSync

Vin

Vdd12

HSin

LSin

Vss Vss

SW

POR+

boot

10,116,7

8,12

U2

EPC2152

10 Ω1 2

R4

2.2 μF, 25 VC18

10 Ω1 2

R5

VIN

SW2

VCC12V

VCC12V

CS1+

CS2+

VIN

1uF, 100VC26

VIN

1uF, 100VC31

1uF, 100VC48

VIN

1uF, 100VC51

VIN

VIN

C24

VIN

C25

VIN

C32

VIN

C36



EPC would like to acknowledge Microchip Technology Inc. (www.microchip.com) for their support of this project.

Microchip Technology Incorporated is a leading provider of smart, connected and secure embedded control solutions. Its easy-to-use development tools and comprehensive product portfolio enable customers to create optimal designs, which reduce risk while lowering total system cost and time to market. The company’s solutions serve customers across the industrial, automotive, consumer, aerospace and defense, communications and computing markets.

The EPC9151 system features the dsPIC33CK32MP102 16-Bit Digital Signal Controller with High-Speed ADC, Op Amps, Comparators and High-Resolution PWM. Learn more at www.microchip.com.

https://www.microchip.com/

https://www.microchip.com/wwwproducts/en/dsPIC33CK32MP102

https://www.microchip.com/

EPC Products are distributed through Digi-Key.www.digikey.com

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Demonstration Board NotificationThe EPC9151 board is intended for product evaluation purposes only. It is not intended for commercial use nor is it FCC approved for resale. Replace components on the Evaluation Board only with those parts shown on the parts list (or Bill of Materials) in the Quick Start Guide. Contact an authorized EPC representative with any questions. This board is intended to be used by certified professionals, in a lab environment, following proper safety procedures. Use at your own risk. As an evaluation tool, this board is not designed for compliance with the European Union directive on electromagnetic compatibility or any other such directives or regulations. As board builds are at times subject to product availability, it is possible that boards may contain components or assembly materials that are not RoHS compliant. Efficient Power Conversion Corpora-tion (EPC) makes no guarantee that the purchased board is 100% RoHS compliant.The Evaluation board (or kit) is for demonstration purposes only and neither the Board nor this Quick Start Guide constitute a sales contract or create any kind of warranty, whether express or implied, as to the applications or products involved. Disclaimer: EPC reserves the right at any time, without notice, to make changes to any products described herein to improve reliability, function, or design. EPC does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, or other intellectual property whatsoever, nor the rights of others.

https://www.digikey.com


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Documents

Demonstration System EPC9151 Quick Start Guide - epc-co.com