Mitsubishi Electric XD8100U Service Manual page 120

DPM09 PCB-MAIN (3/9)
IC4Z0 MP2367DNE-LF-Z
+
1.0V –
+
FB 5
110KHz/340KHz
0.3V –
–
+
SS 8
ERROR
0.795V
+
AMPLIFIER
6
COMP
–
EN 7
EN OK
LOCKOUT
2.5V +
COMPARATOR
+
1.3V – SHUTDOWN
COMPARATOR
IC4ZA MM1701AHBE
8
V
IN
5
CONT
Bias
Reference
3
GND
4
Cn
IC4ZP R1170H331B-T1-F
4
V
DD
-
+
Vref
Current Limit
Thermal Shutdown
1
CE
OVP
RAMP
∑
OSCILLATOR
CLK
–
CURRENT
+
COMPARATOR
6A
1.2V
Driver
Thermal
shutdown
5
V
OUT
2
GND
CURRENT
2
SENSE
AMPLIFIER
+
5V
–
1
M1
0.13Ω
S Q
3
R Q
M2
1.2Ω
4
OVP
IN < 4.05V
IN
INTERNAL
REGULATORS
1
Vo
Current
limitter
- B6 -
IN
BS
SW
GND