Panasonic DMR-EH75VP Service Manual page 142

IC11201
SWITCHING IC
IC-DETAIL BLOCK DIAGRAM
UVLO
+
LATCH RELEASE/
-
OVER VOLTAGE
PROTECTOR/
VCC(START)
OVER HEATING
PROTECTOR /VCC(STOP)
Z/C ZERO CURRENT
1
DET./ONDEAD TIMER
CONTROL
CIRCUIT
STANDBY
CIRCUIT
OCP THRESHOLD
COMPARATOR/
FB
2 BURST MODE
OCP THRESHOLD
COMPARATOR
ON WIDTH
TIMER
GND
3
IC11601
DR +5V SWITCHING REGULATOR
IC-DETAIL BLOCK DIAGRAM
8 7 6
CS EXT GND
CONTROL LOGIC
LEVEL
SHIFT
CNT.
COMP
V5
UVLOcomp
+
-
VREF
VIN V5/PWON VREF/SS
1 2 3
5 9
VIN DRAIN
VCC
7
UVLO
+
START-UP
- CIRCUIT
VCC(STARTUP OFF)
/VCC(STARTUP ON)
IDP(LIMIIT/
BURST)SENS.
SOFT-DRIVE
CIRCUIT
RESTERT
TIMER
5
FB
0.8V
+ -
- - + +
VOUT
CC
4
IC11602
RESET IC
IC-DETAIL BLOCK DIAGRAM
VOUT
5 4
VDD
-
+
Vref
GND CT
2 3
IC11720
F+ SWITCHING REGULATOR
IC-DETAIL BLOCK DIAGRAM
8 7 6 5
VIN NC NC CONT
DRIVER BIAS
CURRENT THERMAL
LIMITTER SHUTDOWN
REFERENCE
NC CN GND
1 2 3 4
IC11301
SWITCHING IC
IC-DETAIL BLOCK DIAGRAM
UVLO
+
LATCH RELEASE/
-
OVER VOLTAGE
PROTECTOR/
OVER HEATING VCC(START)
PROTECTOR /VCC(STOP)
Z/C
ZERO CURRENT
1
DET./ONDEAD TIMER
CONTROL
CIRCUIT
STANDBY
CIRCUIT
FB
2
ON WIDTH
TIMER
IC11801
D +3.8V SWITCHING REGULATOR
IC-DETAIL BLOCK DIAGRAM
8 7 6
CS EXT GND
CONTROL LOGIC
LEVEL
SHIFT
CNT.
COMP
- - +
V5
UVLOcomp
+
-
VREF
VIN PWON VREF/SS
1 2 3
DMR-EH75VP IC-Detail Block Diagram
VCC
4
UVLO
+ DRAIN
START-UP
5
- CIRCUIT
VCC(STARTUP OFF)
/VCC(STARTUP ON)
IDP(LIMIIT/
BURST)SENS.
SOFT-DRIVE
CIRCUIT
GND
3
5
FB
0.8V
+ -
+
CC
4
IC11201 Detail Block Diagram
IC11301 Detail Block Diagram
IC11601 Detail Block Diagram
IC11602 Detail Block Diagram
IC11720 Detail Block Diagram
IC11801 Detail Block Diagram