Data Sheet

FAN7529 Critical Conduction Mode PFC Controller
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FAN7529 Rev. 1.0.2 14
Typical Application Circuit
Features
 High efficiency (>90% at 85V
AC
input)
 Low Total Harmonic Distortion (THD) (<10% at 265V
AC
input, 25W load)
Key Design Notes
 R1, R2, R5, C11 should be optimized for best THD characteristic.
1. Schematic
Figure 37. Schematic
Application Output Power Input Voltage Output Voltage
Ballast 100W
Universal input
(85~265V
AC
)
400V
F1
AC INPUT
5678
OUT
V
CC
GND
ZCD
INV
COMP
MOT
CS
FAN7529
1234
V1
C1
C3 C4
LF1
C2
NTC
BD
C5
R1
C6
R3
R4
R5
T1
D1
C7
R7
R10
R6
R8
D2
R9
C8
Q1
V
AUX
R2
R11
C9
ZD1
C10
PFC OUTPUT
C11
D3
FAN7529 Rev. 00