Sanyo DP42848 Service Manual page 32

IC1600, DC to DC Converter
VREF
VREF
DT1
FB1
VREF
2μA
+
+
SS1
–
SS1OFF
1NV1
200μA
200μA
MASTER
/SLAVE
CT
1NV2
VREF
2μA
–
+
SS2
SS2OFF
+
1V± 10mV
FB2
DT2
IC BLOCK DIAGRAMS (CONT.)
VCC
VCC
MASTER
STB
REG
/SLAVE
(2.5V)
DT1OFF
1V± 10mV
+
ERR + ERR
–
PROTECTION LOGIC
OSC
OCP1
+
– 2.0V
–
1.5V`
OVLO
TSD
2V
OCP2
1.5V
–
+
ERR PWM
+
DT2OFF
STB
Muster
mode
latch
+
–
OCP1
UVLO
2.8V
–
DT1Low
DT
+
1.25V
LS
DT1Low
Hold time
(1.6 msec)
Hold time
(0.2 msec)
Hold time
(1.6 msec)
DT2Low
LS
OCP2
DT2Low
–
DT
+
1,25V
— 32 —
OCP1- OCP1-
VCC
+
ERR
C5V
–
50mVV± 10mV
C5V
DRV
SS1OFF
TSD
DT10FF
VCC 3.2V
VREF 2.2V
C5V
DT20FF
SS2OFF
DRV
VCC
50V± 10mV
–
OCP
+
C5V
OCP2- OCP2-
VCC
REC
(VCC-5V)
CSV
VCC
OUT1
C5V
TSD
UVLO
UVLO
3V
VCC
OUT2
C5V
GND