Denon DVD-3930 Service Manual page 68

TOP247Y (PD: IC901)
CONTROL (C)
Z C
SHUNT REGULATOR/
ERROR AMPLIFIER
I FB
CURRENT
LIMIT
ADJUST
EXTERNAL
CURRENT LIMIT (X)
LINE-SENSE (L)
SENSE
FREQUENCY (F)
R E
Tab Internally
Connected to
SOURCE Pin
V C
+
5.8 V
-
-
4.8 V
5.8 V
+
INTERNAL UV
COMPARATOR
V I (LIMIT)
SOFT
START
ON/OFF
V BG + V T
STOP LOGIC
1 V
V BG
STOP SOFT-
OV/UV
START
D MAX
LINE
DC MAX
DC MAX
CLOCK
HALF
SAW
FREQ.
OSCILLATOR WITH JITTER
7 D
5 F
4 S
3 X
2 L
1 C
0
INTERNAL
SUPPLY
1
SOFT START
÷ 8
SHUTDOWN/
AUTO-RESTART
HYSTERETIC
THERMAL
SHUTDOWN
-
+
PWM
COMPARATOR
LIGHT LOAD
FREQUENCY
REDUCTION
68
DVD-3930/3930CI
-
+
CURRENT LIMIT
COMPARATOR
CONTROLLED
TURN-ON
GATE DRIVER
S Q
LEADING
EDGE
R
BLANKING
DRAIN (D)
SOURCE (S)