Philips FWD796 - Tda8920 Internal IC Diagram; Main Board

MAIN BOARD
TABLE OF CONTENTS
Internal IC Diagram ......................................................... 7-1
Block Diagram ................................................................. 7-2
Circuit Diagram - Servo Part ........................................... 7-3
Circuit Diagram - Main Part ............................................. 7-4
Layout Mapping - Main Part ............................................ 7-5
Circuit Diagram - Tape Part ............................................. 7-6
PCB Layout Top View ...................................................... 7-7
Layout Mapping - Main Part ............................................ 7-8
PCB Layout Bottom View ................................................ 7-9
Electrical Parts list ......................................................... 7-10
7-1 7-1
TDA8920 INTERNAL IC DIAGRAM
OUT1
V
SSP1
V
DDP2
DRIVER
HIGH
MBL461
OUT2
BOOT2
TDA8920TH
BOOT1
DRIVER
LOW
RELEASE1
SWITCH1
ENABLE1
CONTROL
AND
HANDSHAKE
PWM
MODULATOR
MANAGER
OSCILLATOR
TEMPERATURE SENSOR
CURRENT PROTECTION
STABI
MODE
INPUT
STAGE
mute
9
8
IN1−
IN1+
22
21
2017
16
15
V
SSP2
V
SSP1
DRIVER
HIGH
DRIVER
LOW
RELEASE2
SWITCH2
ENABLE2
CONTROL
AND
HANDSHAKE
PWM
MODULATOR
11
SGND1
7
OSC
2
SGND2
6
MODE
INPUT
STAGE
mute
5
4
IN2−
IN2+
1924
V
SSD
HW
1
V
SSA2
12
V
SSA1
3
V
DDA2
10
V
DDA1
231318 14
V
DDP2
PROTSTABI
V
DDP1