FAN7529 Fairchild Semiconductor, FAN7529 Datasheet - Page 2

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FAN7529

Manufacturer Part Number
FAN7529
Description
Critical Conduction Mode PFC Controller
Manufacturer
Fairchild Semiconductor
Datasheet

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FAN7529 Rev. 1.0.0
© 2006 Fairchild Semiconductor Corporation
Typical Application Diagrams
Internal Block Diagram
MOT
ZCD
CS
V
CC
8
4
3
5
2.9V
6.7V
Signal
Ramp
40k
Saw Tooth
Generator
8pF
1.4V
0.8V
GND
6
AC
IN
1.5V
12V
Current Protection
1V Offset
Comparator
8.5V
Zero Current
Figure 2. Functional Block Diagram of FAN7529
UVLO
Detector
Figure 1. Typical Boost PFC Application
Disable
V
CC
MOT
V
AUX
R2
R1
COMP
2
FAN7529
ZCD
R
N
ZCD
AUX
L
Internal
2.5V
Bias
Ref
COMP
GND
R
Timer
S
2
CS
Q
1V~5V
Range
Amplifier
INV
Error
D
V
ref1
Disable
Gm
FAN7529 Rev. 00
V
OVP
V
C
O
ref1
O
0.45V 0.35V
Output
2.675V
Drive
FAN7529 Rev. 00
V
CC
www.fairchildsemi.com
2.5V
7
1
OUT
INV

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