FL6961MY 데이터 시트보기 (PDF) - Fairchild Semiconductor

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FL6961MY

Single-Stage Flyback and Boundary Mode PFC Controller for Lighting

Fairchild Semiconductor 

Application Diagram

Figure 1. Typical Application Circuit for Step-up Converter

Figure 2. Typical Application Circuit for Single Stage PFC Converter

Block Diagram

INV 1

VCC 8

2.65V

2.3V

MOT

3

COMP

2

2.75V

OVP

0.45V

2.5V

VOLTAGE

REGULATOR

SAWTOOTH

GENERATOR

Internal

Supply

THD

OPTIMIZATION

VREF

LEB

VLIMIT

4 CS

VCC

GND 6

UVLO

VCC_ON = 12V

VCC_OFF= 9.5V

9R

2.1V/1.75V

1R

2.75V

VZCDHYS = 0.35V

INHIBIT

TIMER

R

Q

S

DISABLE

10V

5

ZCD

Figure 3. Function Block Diagram

16.5V

7 GATE

© 2010 Fairchild Semiconductor Corporation

FL6961 • Rev. 1.0.2

2

www.fairchildsemi.com

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