![Philips Chassis TPM16.4L LA Service Manual Download Page 26](http://html.mh-extra.com/html/philips/chassis-tpm16-4l-la/chassis-tpm16-4l-la_service-manual_1549073026.webp)
Circuit Descriptions
7.
7.3
DC/DC Converters
The on-board DC/DC converters deliver the following voltages
(depending on set execution):
•
PVDD from the power 12V_AMP for the AUDIO AMP.
•
3V3SB, permanent voltage for the Stand-by controller,
LED/IR, keyborad receiver and controls.
•
+12V, input from the power supply for the panel
common(active mode)
•
+12V, input from the power supply for the AMP
•
DDRV supply voltage for DDR
•
TUNER3.3V, supply voltage for tuner
•
+5V_SW, input intermediate supply voltage for the USB
Power
•
3V3SB, from the power supply for the scaler IC MT5561
•
DVDD3V3, +1V2,clean voltage for Demodulator IC
channel decoder
Figures gives a graphical representation of the DC/DC
converters with its current consumptions :
Figure 7-3 DC/DC converters
6
GND
LED-
GND
n.c.
GND
n.c.
7
GND
-
GND
n.c.
GND
n.c.
8
GND
-
GND
n.c.
GND
VLED-
9
+12V_A
-
+12V
VLED-
+12V_A
VLED-
10
+12V_A
-
+12V
VLED-
+12V_A
VLED-
11
+12V
-
+12V
n.c.
+12V
n.c.
12
+12V
-
+12V
VLED+
+12V
VLED+
13
+12V
-
+12V
-
+12V
14
+12V
-
+12V
-
+12V
15
+5.2V
-
+5V
-
+5.2V
16
+5.2V
-
+5V
-
FLAG
Number
Connector
32"
43"
49"
CN9101
CN8602
CN9101
CN8601
CN9101
CN8603
Description
to SSB
to Panel
to SSB
to Panel
to SSB
to Panel
Pin
16
6
16
12
16
12
+12V_AMP
FB403
FB414
5V_Normal
FB702
AVDD_AU
Q701
DVDD3V3
U601
TAS5729MD
AVDD_DMPLL
U702
G903T63UF
+12V
PVDD
U706
SY8104ADC
VCCK (1.2V)
FB602
FB703
VCC3.3VA_A1
+12VSB_PRE
+5V_SB
+3.3V_SB
AO3401A
U703
M5723B-33F61U
U705
G5695T11U
FB413
R719
AVDD1V2 (1.2V)
20010_202.eps