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EN 28
7.
TPM16.1HE LA
7.3
DC/DC Converters
The on-board DC/DC converters deliver the following voltages
(depending on set execution):
•
+STB_PWR, permanent voltage for the Stand-by Power
system and WIFI.
•
+3V3SB,voltage for scaler,EMMC,IR/LED reciver,Key
board
•
+12V, input from the power supply for the panel
common(active mode)
•
+12V, input from the power supply for LNB supply
•
LDO_PWR,DVDD3V3, voltage for EMMC when TV on
+12V_AUDIO
STB_PWR
+12V
AVDD3V3
AVDD3V3
2016-May-13
Circuit Descriptions
Connector
Number
CN9101
CN8601
Description
to SSB
to panel
Pin
16
12
4
3D_ON
-VLED1
5
GND
-VLED1
6
GND
n.c.
7
GND
n.c.
8
GND
-VLED2
9
+12VA
-VLED2
10
+12VA
-VLED2
11
+12V
n.c.
12
+12V
+VLED
13
+12V
-
14
+12V
-
15
+5v
-
16
+5v
-
FB755
FB754
U710
U4251
FB710
U708
FB711
FB712
U704
FB713
U711
U703
Figure 7-3 DC/DC converters
CN9101
CN8101
CN9101
to SSB
to panel
to SSB
16
12
16
3D_ON
-VLED1
3D_ON
GND
-VLED1
GND
GND
n.c.
GND
GND
n.c.
GND
GND
-VLED2
GND
+12VA
-VLED2
+12VA
+12VA
-VLED2
+12VA
+12V
n.c.
+12V
+12V
+VLED
+12V
+12V
-
+12V
+12V
-
+12V
+5v
-
+3.5v
+5v
-
+3.5v
•
DDRV, VCCK, voltage for DDR
•
+5V_SW, USB port supply voltage
•
+3V3_TUNER, supply voltage for tuner
•
PVDD from the power +12V_AU for the AUDIO AMP
•
1.2V_T2, +3.3VA_T2 voltage for Demodulator IC channel
•
Wi-Fi_VCC,voltage for WIFI
Figures gives a graphical representation of the DC/DC
converters with its current consumptions :
PVDD
U712
G9091
DDR_P
+5V_SW
WR_EN
Wi-
Fi_VCC
WIFI_P
WR_EN
U701
+5V_SW
AVDD1V0
LDO_PW
R
back to
div.table
CN8101
to panel
12
-VLED1
-VLED1
n.c.
n.c.
-VLED2
-VLED2
-VLED2
n.c.
+VLED
-
-
-
-
AUDIO AMP
TAS5760LD
3V3SB
DDRV
DVD3V3
AVDD3V3
VCCK
20120_202.eps
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