LG MBD-D102X Service Manual page 46

4-2. SYSTEM BLOCK DIAGRAM
System
Microcontroller
TAS5508
VALID
Left-
Channel
Output
Right-
Channel
Output
Hardwire
35 V
System
Power
Supply
GND
12 V
VAC
OTW
SD
RESET_AB
RESET_CD
PWM_A
Input
H-Bridge 1
PWM_B
PWM_C
Input
H-Bridge 2
PWM_D
M1
M2
Mode
Control
M3
4 4
PVDD
Power
PVDD
Supply
Decoupling
GND
GVDD (12 V)/VDD (12 V)
Output
H-Bridge 1
2-Channel
H-Bridge
BTL Mode
Output
H-Bridge 2
4
GVDD
VDD
Hardwire
VREG
OC Limit
Power Supply
Decoupling
3-35
BST_A
Bootstrap
Capacitors
BST_B
OUT_A
2 nd -Order L-C
Output Filter
for Each
OUT_B
Half-Bridge
OUT_C
2 nd -Order L-C
Output Filter
for Each
OUT_D
Half-Bridge
BST_C
Bootstrap
Capacitors
BST_D