LG LF-U850D - System Block Diagram

- 2-10 -
• TAS5142
SYSTEM BLOCK DIAGRAM
2
nd
-Order L-C
Output Filter
for Each
Half-Bridge
Bootstrap
Caps
2-Channel
H-Bridge
BTL Mode
System
Microcontroller
OUT_A
OUT_B
OUT_C
OUT_D
BST_A
BST_B
BST_C
BST_D
RESET_AB
RESET_CD
System
Power
Supply
Hardwire
Mode
Control
PVDD
GVDD (12 V)/VDD (12 V)
GND
Hardwire
OC Limit
M1
M3
PVDD
Power
Supply
Decoupling
32 V
12 V
GND
VAC
PWM_A
PWM_C
PWM_D
PWM_B
VALID
M2
Left-
Channel
Output
Right-
Channel
Output
Input
H-Bridge 1
Input
H-Bridge 2
GVDD
VDD
VREG
Power Supply
Decoupling
4
PVDD_A, B, C, D GND_A, B, C, D GVDD_A, B, C, D
44
VDD GND VREG AGND OC_ADJ
Bootstrap
Caps
2
nd
-Order L-C
Output Filter
for Each
Half-Bridge
SD
OTW
Output
H-Bridge 2
Output
H-Bridge 1
OTW
SD
TAS5508