Document Title
SV42LMUB_AX_US_HSM
Page No.
49 / 92
Document No.
LF100-000210
Revision
1.0
The information contained in this document is the exclusive property of HannStar Display Corporation. It shall not be
disclosed, distributed or reproduced in whole or in part without written permission of HannStar Display Corporation.
8.2 Power Board Block Diagram
There are 2 part circuits in PI board of this project (fig.1), Power& inverter circuits which is a
single layer board, There are 3 output in the power parts , one is interface board including
USB and TV tuner et; the other is inverter board. In the power circuit, +16V output is inverter
part, the system (2FFCLs) block diagram as below; the last is Audio power output, the power
is 12V.
INL836
M
O
S
F
E
T
T
ra
n
sf
o
rm
er
Lamp1
Lamp2
AC Input
90V~264V
AC Line Filter
LD7575
PWM
Control
Rectifier&
Filter Circuit
Power
Transformer
Feedback
and OVP
Photocoupler
+16V DC output
+5V DC output
Brightness Control
ON/OFF Control
Feedback
Control
To
IF
Bo
ar
d
Power
MOSFET
Regulator
DC to DC
12.5V to 12V
Speaker out
To
Pa
n
e
l
C
C
F
L
Snubber
&Schottky
Snubber
&Schottky
+12.5V DC output
Snubber
&Schottky
For audio
For audio