Philips HTS3580/93 Service Manual page 26

8 - 1
POWER BOARD
TABLE OF CONTENTS
Internal IC Diagram ........................................................................... 8-1
Circuit Diagram .................................................................................. 8-2
PCB Layout Top View ....................................................................... 8-3
PCB Layout Bottom View .................................................................. 8-4
INTERNAL IC DIAGRAM - SSC620S SOP
INTERNAL IC DIAGRAM - AZ7500BP
6
RT
5 Oscillator
CT
Dead Time Control
Comparator
4
DTC +
0.12V
Error Amplifier 1 +
PWM
1
Comparator
1IN + +
2
1IN
Error Amplifier 2
16
+
2IN +
15
2IN
0.7mA
3
FEEDBACK
8 - 1
OUTPUT CTRL
13 8
Pulse Steering
Flip Flop
Q1
9
D
11
CK
Q2
10
12
Reference 14
Regulator
7
C1
E1
C2
E2
V
CC
REF
GND