Sanyo LCD-32XH3 - PFC Controller IC Block Diagram; Power Supply Controller IC Block Diagram

IC Block Diagrams (On the ASSY, PWB, POWER)
-10-
IC602 MR4010-7101
IC601 < Transition-mode PFC Controller > L6562D
INV
+
UNTERNAL
SUPPLY 7V
6
8
1
7
5
2
3
4
Vcc
GND
COMP
MULT
CS
GD
ZCD
VOLTAGE
REGULATOR
MULTIPLIER AND
THD OPTIMIZER
OVERVOLTAGE
DETECTION
+
25V
+
R2
R1
V
REF2
UVLO
2.1V
1.6V
ZERO CURRENT
DETECTOR
+
DISABLE
40K
5µF
R
S
Q
DRIVER
STARTER
Start
stop
15V
Vcc
(Zero Current Detector)
VIN
1
7
5
2
3
4
VUL
GND
VCC
Collector
Emitter/OCL
F/B
Z/C
+
R
S
Q
Q1
9
Start-up
Circuit
+
+
Vcc(start-up off)
/Vcc(start-up on)
Start-up circuit
UVLO comparator
Latch circuit
reset comparator
UVLO
comparator
+
VOVP
Vcc(start)
/Vcc(stop)
OVP
comparator
Thermal Shutdown
Circuit
Zero Current
Detection Circuit
+
Turn-on
Dead Timer
Standby
Circuit
R
S
Q
Soft Drive
Circuit
+
On width
Timer
IF/B
Vref
(Zero Current
Detection
Terminal)
(Feed Back
Terminal)
+
OCP threshold compatator
VTH (OCL)
+
VTH (Burst Limit)
Burst mode OCP
threshold compatator
Re-start
Timer