Circuit Descriptions
EN 34 TPL16.1E LA7.
2016-Sep-23
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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
• +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 :
Figure 7-3 DC/DC converters
4 3D_ON -VLED1 3D_ON n.c. 3D -VLED1
5 GND -VLED1 GND VLED- GND -VLED1
6 GND -VLED1 GND VLED- GND -VLED1
7 GND -VLED2 GND - GND -VLED2
8 GND -VLED2 GND - GND -VLED2
9 +12VA/16VA -VLED2 +12V-A - +12V-A -VLED2
10 +12VA/16VA -VLED2 +12V-A - +12V-A -VLED2
11 +12VA/16VA +VLED +12V - +12V +VLED2
12 +12VA/16VA +VLED +12VA - +12V +VLED2
13 +12VA/16VA - 12VA/16VA - +12V -
14 +12VA/16VA - 12VA/16VA - +12V -
15 +3.5V/+5V - +3.5/+5V - +5V -
16 +3.5V/+5V - +3.5/+5V - +5V -
Number
Connector
CN9101 CN8602 CN9101 CN8603 CN9101 CN8602
Description to SSB to panel to SSB to panel to SSB to panel
Pin1612166 1612
OPWRSB_PWR
VCCK
AU_12V +12V_AUDIO PVDD
AUDIO AMP
AD87588
FB703 FB601
STB_PWR
U712
G9091
3V3SB
U710
AVDD1
V0_STB
AVDD1
V0_1
R707 R713
Main_12V +12V
FB702
Q704
OPWRSB_PWR
U708 +5V_STB
FB706
Q705
FB704
+5V_SW
U706
FB705
FB707
VCCK
+12V
Q706
U713
+5V_USB
USB2.0 * 2
USB3.0 * 1
OPWRSB_PWR
U707
U702
DVDD3
V3
AVDD3V3
VCC3.3V_FRC
U705
DDR
1.5V
STB_PWR
Q701
DDR_PWR_EN
20110_202.eps
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