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EN 30
7.
TPM16.2HE 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
•
3V3-EMMC, +V-EMMC-IO, voltage for EMMC when TV on
+12V
+12V
+3V3 -ADD
+3V3 -ADD
2016-May-27
Circuit Descriptions
Connector
Number
CN9101
CN8602
Description
to SSB
to panel
Pin
14
8
3
PS_ON
n.c.
4
PS_ON
n.c.
5
GND
VLED-
6
GND
VLED-
7
GND
VLED+
8
GND
VLED+
9
+12V-AUDIO
-
10
+12V-AUDIO
-
11
+12V
-
12
+12V
-
13
+12V
-
14
+12V
-
15
-
-
16
-
-
FB4400
Q4400
FB4301
+5V -SW
FB4306
+5V -SW
U4306
12v-NOK
Q4102
+5V -SW
U4103
BE -PER -EN
FB4105
+3V3
U4300
+5V -SW
FB4303
+5V -SW
Figure 7-3 DC/DC converters
CN9101
CN8603
to SSB
to panel
16
12
PS_ON
VLED-
3D_ON
VLED-
GND
VLED-
GND
n.c.
GND
n.c.
GND
VLED-
+12V-AUDIO
VLED-
+12V-AUDIO
VLED-
+12V
n.c.
+12V
VLED+
+12V
-
+12V
-
+3.5
-
+3.5
-
•
+1V5-DDR, +VREF-A2-DQ, +VREF-A2-CA, voltage for
DDR
•
TUNER_3V3, supply voltage for tuner
•
+5V_SW, input intermediate supply voltage for USB Power
•
+12V-AUDIO1 for the AUDIO AMP
•
+3.3VA_T2, +1.2V_T2 voltage for Demodulator IC channel
decoder
•
+3V3-WIFI,voltage for WIFI
Figures gives a graphical representation of the DC/DC
converters with its current consumptions :
U4400
U4401
Q4403
U4301
U4305
U4102
U4307
U4302
+3v5V -SW
DDR -PWR -EN
DDR -PWR -EN
back to
div.table
CN9101
CN8603
to SSB
to panel
16
12
PS_ON
VLED-
A3D
VLED-
GND
VLED-
GND
n.c.
GND
n.c.
GND
VLED-
+12V-A
VLED-
+12V-A
VLED-
+12V
n.c.
+12V
VLED+
+12V
-
+12V
-
+5v
-
FLAG
-
12v-NOK
FB4302
FB4304
+1V5 -DDR
+5V -SW
+3V3 -AVDD
+3V3
+1V0 -VCCK
+1V1 -NT
DV12
+1V0 -ADD
20130_204.eps
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