FSQ0765RS 데이터 시트보기 (PDF) - Fairchild Semiconductor

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FSQ0765RS

Green-Mode Fairchild Power Switch (FPS™) for Quasi-Resonant Operation - Low EMI and High Efficiency

Fairchild Semiconductor 

Application Diagram

VO

AC

IN

Sync

PWM

FB VCC

Vstr Drain

GND

FSQ0765R Rev.00

Figure 1. Typical Flyback Application

Internal Block Diagram

Sync

5

AVS

FB

4

0.35/0.55

VCC

Vref

VBurst

Idelay

IFB

3R

tON < tOSP

after SS

R

Soft-

Start

PWM

Vstr

VCC

Drain

6

3

1

OSC

Vref

VCC good

VCC

8V/12V

LEB

250ns

SQ

RQ

Gate

driver

VOSP

VSD

VCC

VOVP

LPF

TSD

LPF

SQ

RQ

AOCP

VOCP

(1.1V)

2

GND

VCC good

FSQ0765RS Rev.00

Figure 2. Internal Block Diagram

© 2008 Fairchild Semiconductor Corporation

FSQ0765RS • Rev. 1.0.2

3

www.fairchildsemi.com

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