Philips TPN15.2E LA Service Manual page 27

Connector
43"&49"
Number CN9303
Descriptio
n to SSB
Pin 16
6 GND
7 GND
8 GND
9 +12V-A
10 +12V-A
11 +12V
12 +12V
13 +12V
14 +12V
15 +3.5V/5V
16 +3.5V/5V
7.3 DC/DC Converters
The on-board DC/DC converters deliver the following voltages
(depending on set execution):
AUDIO_12V
PWR_12V
1650mA
1367 mA
500 mA
7.4 Front-End Analogue and DVB-T, DVB-C;
ISDB-T reception
7.4.1 Front-End Analogue and DVB-T/C part
The Front-End for DVB-T/C DTV part consist of the following
key components:
• TUNER EU DTOS40CIL034B
• SCALER NT72666BG-BA/D HS-PBGA-1135
Below find a block diagram of the front-end application for
DVB-T/C DTV part.
55"
CN8101 CN9101 CN8601
to panel to SSB to panel
12 16 12
n.c. GND n.c.
n.c. GND n.c.
-VLED2 GND LED2
-VLED2 +12V-A LED2
-VLED2 +12V-A LED2
n.c. +12V n.c.
+VLED +12V VLED
- +12V -
- +12V -
- +3.5V -
- +3.5V -
BUCK CONVERTER
BUCK CONVERTER
+5V_STB
G5309QN1U(8A)
TPS54428(4A)
3964 mA(5V) U702
1300mA
U706
PWR_ON_2
LDO
AP2125N
+5V_STB
-3.3TRG1
14mA
U707
POWER SWITCH
+5V_STB AO4449(7A)
Q701
2950 mA(5V)
PWR_ON_2
Figure 7-3 DC/DC converters
Circuit Descriptions
• +5V-STANDBY, permanent voltage for the Stand-by
controller, LED/IR receiver and controls.
• +12V, input from the power supply for the panel
common(active mode)
• +12V, input from the power supply for the audio amplifier
• +1V5, from the power supply for the scaler IC NT72666
• +1V1, from the power supply for the scaler IC NT72666
• +3V3, from the power supply for the scaler IC NT72666
• +2V5, from the power supply for the scaler IC NT72666
• +1V5, supply voltage for DDR2 (diagram B03B)
• +5V, supply voltage for USB and CAM
• +3V3-TUN, supply voltage for tuner
• +5V_SW, input intermediate supply voltage for USB
• +1V2_T2, voltage for Tuner T2_Decoder
Figures gives a graphical representation of the DC/DC
converters with its current consumptions :
DV11
PWR_ON_2
STBC3V3
+5V_SW
1500 mA
LDO
+5V_SW AZ1117_1.35A
U203_SOT-223
230 mA
230 mA
POWER protect
+5V_SW
G5250M1T1U
U102
80 mA 80 mA
CI_PWR_EN
BUCK CONVERTER
+5V_SW AP3417C(1A)
U703
300 mA
BUCK CONVERTER
AP3417C(1A)
+5V_SW
U705
640 mA
BUCK CONVERTER
455 mA
AZ1117CD
U204
BUCK CONVERTER
RT8079ZQW(3A)
+5V_SW
U709
1700 mA
200 mA
PWR_ON_2
Depend on panel
FB751 POWER SWITCH
+5V_SW
PANEL_VCC
AON4421
PWR_12V
Q750
1367 mA
FB750
PANEL_VCC_ON/OFF
back to
div. table
TPN15.2E LA
AUDIO AMP
1.3A
AD87588
MAIN CHIP
NT72666
6500mA IR,LED
1mA
MAIN CHIP NAND FLASH
14mA
MX30LF2G18AC-TI
NT72666
1mA
12mA
USB multi-media
USB MHL
TUNER
TUNER
LG_Tuner
TCL_Tuner
DVB-S/S2
DVB-C/T/T2
+3V3_TUNER
PCMCIA CARD
VCC_CI
CI CARD PWR
MAIN CHIP
600 mA MAIN2V5
NT72666BG
MAIN CHIP
460 mA MAIN3V3
NT72666BG
S2_DEMOD
T2_DEMOD
SI2166
AVDD1V2
NT78822
455 mA
U201
U201
MAIN CHIP
DV15
NT72666
800 mA
DDR3 x4
900 mA
PANEL_T-CON
FB411
LVDS_VDD
PANEL_22"~55"
+5V or +12V
1367 mA
FB412
LNB POWER
+12V_SW
MP8126
U202
500 mA
7. EN 27
19970_202.eps
2015-Nov-27