Sony HBD-DZ950 - Page 40

DAV-DZ350/DZ650/DZ950
40
– POWER Board –
IC903 SSC6200
OVER
VOLTAGE
PROTECT
THERMAL
SHUTDOWN
+33.5 V
+0.83 V
+0.52 V
+7.3 V
+14.6 V/+10 V
FB/CC/OVP
1
VCC
2
DRIVE
5
O.C.P
6
FM/SS
7
GND
8
TIMER
tFMx
Q
R
S
Q
R
S
DELAY
10 Ps
+

+

PWM
LATCH
1.2 mA
12 PA
+4.7 V/
+3.7 V
FREQUENCY
MODULATION
DRIVE
BLANKING
(300 ns)
OVER LOAD
PROTECTION
FEEDBACK/
OVER CURRENT
PROTECT
PWM
OSCILLATION
92 to 108 kHz
RESET
PULSE
20 PA
+9.6 V
410 PA
+7.6 V
24 PA
UNDER
VOLTAGE
LOCK OUT
INTERNAL
BIAS
CV/CC
CONTROL
NOISE
REDUCTOR
+8.5 V
BURST
SOFT
START
NC
3
STARTUP
4
CK
D
1IN +
1
1IN –
2
FEEDBACK
3
DTC
4
CT
5
RT
6
GND 7
C1 8
2IN +
16
2IN –
15
OUTPUT CTRL
13
VCC
12
C2
11
E2
10
E1
9
REF
14
ERROR AMPLIFIER 1
PULSE-STEERING
FLIP-FLOP
0.12 V
0.7 mA
+
–
DEAD-TIME
CONTROL
COMPARATOR
+
–
OSCILLATOR
ERROR
AMPLIFIER 2
Q1
Q2
+
–
PWM
COMPARATOR
+
–
REFERENCE
REGULATOR
IC905 AZ7500