Fairchild Power Switch

Sep, 2004Power Conversion

GFPS for High Power Applications

Display & Computing - CRT Monitor - CRT TV - Projection TV - LCD TV / PDP - Silver Box - NoteBook Adaptor

• Power Range : 100 ~ 300Watt

• System Configuration– Qusi-Resonant with multi-output for CTV– Sync Frequency with multi output for CRT Monitor– Forward or Half bridge with multi output for PC– Multi power stage for PDP/ LCD TV

• Development Direction– Low Stand by requirement

• CTV/Monitor - under 1.0Watt• PC SMPS - under 1.0Watt @ Po=0.5Watt

– High Efficiency requirement• 300Watt * 90% efficiency 30watt power loss• Need to reduce switching loss(soft switching)

3Chip 1Pkg for resonant solution

• FSC Solution– QRC Applications : FSCQ-Series– Silver Box/LCD TV : FSD1000

Device

Function Protection Option

PKGVdmax

(V)

Ipeak

(A)

Pin(max)(1)

85-265VAC

Fopr

(KHz)

Rds(on)

Max ()OLP OCL OVP TSD

High Power Quasi-Resonant Converter Applications

Color TV

KA5Q0565RT 650 3.5 70 QRC 2.2 YES YES YES YES TO-220F-5L

KA5Q0740RT 400 5.0 100 QRC 1.1 YES YES YES YES TO-220F-5L

KA5Q0765RTH 650 5.0 100 QRC 1.6 YES YES YES YES TO-220F-5L

KA5Q12656RTH 650 6.0 150 QRC 0.9 YES YES YES YES TO-220F-5L

KA5Q1265RFH 650 8.0 200 QRC 0.9 YES YES YES YES TO-3PF-5L

KA5Q1565RF 650 11.5 270 QRC 0.65 YES YES YES YES TO-3PF-5L

FSCQ0765RT 650 5.0 100 QRC 1.6 YES YES YES YES TO-220F-5L

FSCQ1265RT 650 7.0 150 QRC 0.90 YES YES YES YES TO-220F-5L

FSCQ1565RT 650 8.0 200 QRC 0.65 YES YES YES YES TO-220F-5L

FSCQ1565RP** 650 11.5 250 QRC 0.65 YES YES YES YES TO-3PF-7L

FSCQ2270RP** 650 14.0 300 QRC 0.38 YES YES YES YES TO-3PF-7L

** Under Development

Green FPS provide under1watt stand by power consumption

Selection Guide for C-TV

Compact and cost effective design with FPS

UC3842

Comp Vref

RtCt

Isense

Vfb Vcc

Out

GND

ACInput

Vo

Soft start

frequency setting

Current sensing

MOSFET drive

PWM controller

MOSFET FPS includesFPS includes SenseFETSenseFET PWM controllerPWM controllerOptimized Gate drive circuitOptimized Gate drive circuitAdditional function Additional function - Quasi-resonant switching- Quasi-resonant switching - Soft start- Soft start - Burst operation- Burst operationProtection functionProtection function - Over load protection- Over load protection - Over voltage protection- Over voltage protection - Over current protection- Over current protection - Pulse by Pulse current limit- Pulse by Pulse current limit - Over temperature protection- Over temperature protection

Features and Advantages of FSCQ-series

• Features- Optimized for Quasi-resonant converter (Low EMI and High Efficiency)- Fully avalanche rated and 100% tested SenseFET- Pulse-by-pulse current limiting- Improved reliability through various protection functions

: Over voltage, Over load, Over current, Thermal shutdown- Advanced Burst operation for low power consumption in standby (<1W)- Internal Soft start function (20ms)- Extended Quasi-resonant operation for wide operation range- Reduced startup and operating currents

• Advantages- Reduced board space (simple & compact circuit design)- Decreased assembly time and field failure rate Enhanced

productivity

FSCQ-series Functional Block Diagram

9V/15V

3 1

2

4

AuxiliaryVref Main bias

S

Q

Q

R

OSC

Vcc

Vref

Idelay

IFB

VSD

TSD

Vovp

Sync

Vocp

S

Q

Q

R

R

2.5R

Vcc good

Vcc Drain

FB

GND

AOCP

Gatedriver

Vcc good

LEB600ns

PWM

Soft start

Internalbias

Normaloperation

VBurst

Vref

Ib

Vref

Ibufb

Burst modeController

Normal operation Burst Switching

5Sync

Threshold

Quasi-resonant(QR) switching

controller

+

-

+

-

S

Q

Q

R

Power Reset

4.6V/2.6V : Normal QR3.0V/1.8V : Extended QR

fs

QRC Control

Burst Mode Operation

TSD

OLP

OVP

AOCP

Latch Mode

Current Mode Control

Auto Restart Mode

SenseFET

Burst operation - Output drop circuit

Picture ON

MicomLinearRegulator

VO2

VO1 (B+)

KA431R2

R1

R3

Rbias

RD

RFCF D1Q1

A

CR

Dz

- Normal mode : Vo1 (B+) is regulated

- Standby mode : Vo2 is regulated

Power Consumptions in standby mode

ViIo

0 mA 10 mA 20 mA 30 mA 40 mA 50 mA

90 Vac 0.13 W 0.30 W 0.56 W 0.68 W 0.76 W 0.86 W

120 Vac 0.13 W 0.41 W 0.59 W 0.76 W 0.93 W 0.99 W

150 Vac 0.17 W 0.42 W 0.58 W 0.77 W 0.94 W 1.07 W

180 Vac 0.22 W 0.45 W 0.62 W 0.79 W 0.95 W 1.08 W

210 Vac 0.26 W 0.48 W 0.64 W 0.79 W 0.96 W 1.10 W

240 Vac 0.31 W 0.52 W 0.68 W 0.85 W 1.02 W 1.17 W

270 Vac 0.36 W 0.57 W 0.75 W 0.91 W 1.07 W 1.24 W

Minimum voltage of linear regulator = 8.0VB+ output : open

Pin Compatible : TO-220F-5L & TO-3PF-7L

TO-3PF-7LTO-220F-5L

2.54mm

1.5mm

1.5mm

1.5mm 1.5mm 1.5mm

2.54mm

1.5mm

1.5mm2.54mm

3.18mm 3.18mm

S

D Vcc

F/B

Sync

S

D Vcc

F/B

NCSync

NC

Same pin layout

Generation KA5Q-Series FSCQ-Series FSCQ Advantages

Control MethodQRC/PSR

High Efficiency/Low EMI

QRC with high frequency limit High Efficiency/Low EMI

Temp. of device can be lower at high line input

Start-up current

/Operation current

Max. 200uA

/ 18mA(always constant)

Max. 50uA

/ 6mA(reduced in burst mode)Lower standby power

Output regulation in standby

By Vcc control By Feedback control Just difference of method

Output voltage drop in standby

Up to half Any levelLower standby power but MCU

reset must be considered

Standby power Under 2W Under 1W

Soft start None 20mSReducing overshoot voltage

on Power MOSFET & secondary side diode

SenseFET Q-FET S-FET

PKG TO220F-5L/TO3PF-5L TO220F-5L/TO3PF-7LThe one PCB can be used

regardless of different PKG

Line-up

Status

KA5Q0740RT

KA5Q0565RT

KA5Q0765RTH

KA5Q12656RTH

KA5Q1265RFH

KA5Q1565RF

FSCQ0765RT

FSCQ1265RT

FSCQ1565RT

FSCQ1565RP

FSCQ2270RP

FPS Comparison for Color TV

Energy Recovery Block

MCU

& Logic

DATA

Clock

H Sync

V Sync PANEL

Energy Recovery Block

X Sustain Block

Y Sustain Block

Next page for more detail

Address Driver

Power Supply ・ FPSTM

・ PFC/PWM

PDP Power Supply - System Block Diagram

PFC VSUSTAIN VSET / VERASE / VSCAN Stand by VADDRESS/ VMULTI / VAUDIOAMP

A B C D E F

ML4824(Combo)+FQA28N50/24N50*2 FQL40N50+ISL9R1560

FFPF10U60DNFFPF05U60DNRURP860CC

FFPF10U60DNFFPF05U60DNKA5L0380RFSDx0365RNFSDM0565R

FFPF10U60SFFPF05U60DNRURP860

KA5L0380RFSDx02/0365RN

FS7M0680FS7M0880

ML4810+FET(PFC only)ML4822(ZVT)+FET(PFC only)

EMI

FILTERPFC VSUSTAIN

VSET

KA5L0380R

VMULTI

FS7M0880

+100V / 20W

VADDRESS

FS7M0880

+3.3V, +6V +12V, +15V, +33V

+70V / 150W

400V

VERASE

KA5L0380R+110V / 20W

+90V / 30W

+5V / 3.5W

+190V(+85V)

Boost420W

Two switch Forward

Flyback

Flyback

Flyback

Flyback

Flyback

Flyback / 80W

+180V / 240W

VSCAN

KA5L0380R

ML4824(Combo)

Flyback

+18V / 40WVAUDIO AMP

FS7M0880

Stand by

KA5L0380R

AB

C

D

E

F

•Focus device

Fly back, Forward and half bridge topology (400W~600W)

Low standby power, under 1W required

Active PFC required (Combo or PFC only)

PDP Power Supply - Block Diagram

EMI

FILTER

PFC

ML4821

380~400V

ML4824(Combo)+FET

200W+180V

120W+60V

70~90W+3.3V+5V+12V+15Vothers

3W+5V

VSUSTAIN

KA7500C+FET

VADDRESS

FS7M0880

Logic BoardImage BoardSound Board

VMULTI

FS7M0680

Stand by

KA5M0280R

Power Solution for PDP