FAN7602B Fairchild Semiconductor, FAN7602B Datasheet - Page 11

• Manufacturer Part Number: FAN7602B
• Description: The FAN7602B is a green current-mode PWM controller
• Manufacturer: Fairchild Semiconductor

FAN7602B Rev. 1.0.0
© 2007 Fairchild Semiconductor Corporation
Typical Application Circuit
Features
Key Design Notes
1. Schematic
Low stand-by power (<0.3W at 265V
Constant output power control
All the IC-related components should be placed close to IC, especially C107 and C110.
If R106 value is too low, there can be subharmonic oscillation.
R109 should be designed carefully to make V
R110 should be designed carefully to make V
R103 should be designed to keep the MOSFET V
Application
Adapter
C103 C104
AC INPUT
BD101
R101
C101
C102
FUSE
C105
R112
R113
C110
R107
C107
Output Power
48W
R114
R102
1
2
3
4
AC
LUVP
Latch/
CS/FB
Plimit
GND
)
R105
IC101
CC
Figure 25. Schematic
CC
V
D101
Out
STR
NC
V
voltage lower than OVP when the input voltage is 85V
voltage higher than 8V when the input voltage is 265V
CC
DS
Q101
R108
8
7
6
5
voltage lower than maximum rating when the output is shorted.
Universal input (85~265V
11
R104
D103
1
3
T1
Input Voltage
12
9
6
5
C108
D102
R206
C109
D202
D204
R109
4
3
4
3
R111
C201
C204
ZD101
OP2
OP1
R110
IC201
1
2
1
2
AC
3
2
)
ZD201
R203
R202
1
L201
R207
C222
C203
Output Voltage
R204
R205
AC
12V
AC
C202
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at full load.
at no load.