Switching Regulator - Sanyo PLC-EF31 Service Manual

STR-Z2156

Switching regulator

7
11
FA7612CN PWM POWER CONTROL
ON/OFF
SIGNAL
VOLTAGE
CONTROL
SIGNAL
Vcc
8
PROTECTION
ABNORMAL
ABNORMAL
START
TEMP. DET.
VOL. DET.
DELAY LATCH REF
OSC
OC-RC OSC
CONTROL
6 5 4
CONT
ABNORMAL VOLTAGE DETECT
G
G
G (H)
9 15 2
Vin
1
FET
OUT
14
LOGIC
FET
12
10
G (L)
VOLTAGE CONTROL
PC612
G
VOLTAGE CONTROL OUT
-60-
T621
D655
D651
D652
6 1
5 2
PC611
4 3
6 1
5 2
4 3
OUTPUT
9V
16V
6.25V
-6V
3 3
2
2
IC652
1 1
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