Philips HTS5540 Service Manual page 29

8 - 1
AMP BOARD
TABLE OF CONTENTS
Internal IC Diagram ........................................................................... 8-1
Circuit Diagram .................................................................................. 8-2
PCB Layout Top & Bottom View ........................................................ 8-3
INTERNAL IC DIAGRAM - TA5508APAG
INTERNAL IC DIAGRAM - TAS5352 2ADDV
OTW
System
Microcontroller SD
12C
TAS5518
RESET_AB
VALID
RESET_CD
PWM_A
Left-
Input
Channel
H-Bridge 1
PWM_B
Output
2-Channel
H-Bridge
BTL Mode
PWM_C
Right-
Input
Channel
H-Bridge 2
PWM_D
Output
M1
Hardwire
M2
Mode
M3
Control
4 4 4
GVDD
PVDD
PVDD
34.5V
VDD
Power
VREG
Supply
System
Power Supply
Decoupling
Power
Decoupling
Supply
GND
GND
GNDD(12V)/VDD(12V)
12V
VAC
8 - 1
BST_A
Bootstrap
Capacitors
BST_B
OUT_A
2nd-Order L-C
Output
Output Filter
H-Bridge 1
OUT_B
for Each
Half-Bridge
OUT_C
2nd-Order L-C
Output Filter
OUT_D for Each
Half-Bridge
BST_C
Bootstrap
Capacitors
BST_D
Hardwire
DC Llmit