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EN 34
7.
TPL16.1E 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 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
•
DDRV, VCCK, voltage for DDR
AU_12V
OPWRSB_PWR
STB_PWR
Main_12V
FB705
+12V
OPWRSB_PWR
2016-Sep-23
Circuit Descriptions
Connector
Number
CN9101
CN8602
Description
to SSB
to panel
Pin
16
12
4
3D_ON
-VLED1
5
GND
-VLED1
6
GND
-VLED1
7
GND
-VLED2
8
GND
-VLED2
9
+12VA/16VA
-VLED2
10
+12VA/16VA
-VLED2
11
+12VA/16VA
+VLED
12
+12VA/16VA
+VLED
13
+12VA/16VA
-
14
+12VA/16VA
-
15
+3.5V/+5V
-
16
+3.5V/+5V
-
FB703
+12V_AUDIO
Q705
R707
U710
FB702
Q704
OPWRSB_PWR
FB706
U708
FB707
U706
U713
Figure 7-3 DC/DC converters
CN9101
CN8603
to SSB
to panel
16
6
3D_ON
n.c.
GND
VLED-
GND
VLED-
GND
-
GND
-
+12V-A
-
+12V-A
-
+12V
-
+12VA
-
12VA/16VA
-
12VA/16VA
-
+3.5/+5V
-
+3.5/+5V
-
•
+3V3_TUNER, supply voltage for tuner
•
+5V-USB, input intermediate supply voltage for USB
Power
•
PVDD from the power +12V_AU for the AUDIO AMP
•
CVDD_1V1, DVDD3V3 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 :
FB601
PVDD
U712
G9091
R713
AVDD1
V0_STB
+12V
FB704
+5V_STB
Q706
VCCK
VCCK
+5V_USB
USB2.0 * 2
USB3.0 * 1
back to
div.table
CN9101
CN8602
to SSB
to panel
16
12
3D
-VLED1
GND
-VLED1
GND
-VLED1
GND
-VLED2
GND
-VLED2
+12V-A
-VLED2
+12V-A
-VLED2
+12V
+VLED2
+12V
+VLED2
+12V
-
+12V
-
+5V
-
+5V
-
AUDIO AMP
AVDD1
V0_1
U707
+5V_SW
U702
U705
Q701
STB_PWR
DDR_PWR_EN
AD87588
3V3SB
DVDD3
V3
AVDD3V3
VCC3.3V_FRC
DDR
1.5V
20110_202.eps
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