GRUNDIG Service
Chassis PE
2 - 42
Voltage
Feedback
Input
Multiplier
,
Latch,
PWM,
Timer,
&
Logic
Error Amp
Multiplier
Undervoltage
Lockout
2.5V
Reference
MC34262
MC33262
Zero Current Detector
5
8
6
7
4
3
2
1
Drive Output
GND
Zero Current
Detect Input
Multiplier
Input
Compensation
V
CC
Current Sense
Input
Overvoltage
Comparator
+
1.08 V
ref
+
V
ref
Quickstart
NCP1212
+5 V
9 K
1/4
+5 V
+
-
50 A
1.25 V
Brown
±
out
Detect
Control
Input
Brown
±
out
Shutdown
+5 V
60 A
Current
Sense
Q
200 ns
LEB
C
T
Soft
±
Start &
Max. Duty Select
OSC
Block
+
-
+
-
1 V
Overload
Detect
Reset
Set
Overload Detect
Enable
Skip_Cycle
Overload
Shutdown
S
R
Q
Q
Skip_Cycle
F/F
OVP (25 V)
UVLO (10 V)
V
CC
Management
Shutdown
Shutdown
Shutdown
Totem Pole
Drive
+
-
Q
Soft
±
Start/
D
max
V
CC
Output
Gnd
+5 V
10 A
V
SS
