FSQ0765RS Fairchild Semiconductor, FSQ0765RS Datasheet - Page 3

• Manufacturer Part Number: FSQ0765RS
• Description: A Quasi-Resonant Converter (QRC) generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency
• Manufacturer: Fairchild Semiconductor

FSQ0765RS • Rev. 1.0.2
© 2008 Fairchild Semiconductor Corporation
Application Diagram
Internal Block Diagram
FB
4
V
CC
V
V
V
V
OSP
OVP
SD
CC
I
delay
t
ON
after SS
V
< t
ref
OSP
I
FB
0.35/0.55
V
LPF
Burst
AC
IN
3R
Sync
R
LPF
Sync
Figure 1. Typical Flyback Application
Soft-
Start
5
Figure 2. Internal Block Diagram
FB
TSD
PWM
AVS
PWM
V
V
CC
CC
good
V
str
GND
250ns
LEB
Drain
OSC
3
S
R
S
R
Q
Q
Q
Q
V
6
str
FSQ0765R Rev.00
V
ref
V
CC
AOCP
good
V
O
driver
Gate
(1.1V)
V
V
8V/12V
OCP
3
CC
FSQ0765RS Rev.00
V
CC
Drain
1
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2
GND