Circuit Descriptions
7.
7.2.3
Connector overview
Table 7-1 Connector overview
7.3
DC/DC Converters
The on-board DC/DC converters deliver the following voltages
(depending on set execution):
•
+5V-STANDBY, permanent voltage for the Stand-by
controller.
•
DV33SB, voltage forIR/Key board
•
+12V, input from the power supply for the panel
common(active mode)
•
+12V, input from the power supply for LNB supply
•
+1V5, from the power supply for the scaler IC NT72562
•
+3V3, from the power supply for the scaler IC NT72562
•
+1V5, supply voltage for DDR2
•
+3V3-TUN, supply voltage for tuner
•
+5V_SW, input intermediate supply voltage for USB
•
AUDIO_12V for the AUDIO AMP
Figures gives a graphical representation of the DC/DC
converters with its current consumptions :
Figure 7-3 DC/DC converters
Number
Connector
CN9101
CN8605
CN9101
CN8602
CN9101
CN8601
Description to SSB
to panel
to SSB
to panel
to SSB
to panel
Pin
16
6
16
6
16
12
1
DIM
+VLED
DIM
+VLED
DIM
+VLED
2
BL_O/F
+VLED
BL_O/F
+VLED
BL_O/F
n.c.
3
n.c.
n.c.
PS_ON
n.c.
PS_ON
-VLED1
4
n.c.
n.c.
n.c.
n.c.
n.c.
-VLED1
5
GND
-VLED
GND
-VLED
GND
n.c.
6
GND
-VLED
GND
-VLED
GND
n.c.
7
GND
-
GND
-
GND
n.c.
8
GND
-
GND
-
GND
n.c.
9
+12V_Audio
-
+12VA
-
+12VA
-VLED2
10
+12V_Audio
-
+12VA
-
+12VA
-VLED2
11
+12V
-
+12V
-
+12V
n.c.
12
+12V
-
+12V
-
+12V
+VLED
13
+12VA
-
+12V
-
+12V
-
14
+12VA
-
+12V
-
+12V
-
15
n.c.
-
+5v
-
+5v
-
16
n.c.
-
+5v
-
+5v
-
PWR_ON_2
MAIN CHIP
MAIN CHIP
TUNER
PANEL_T-CON
MAIN CHIP
640 mA
11mA
+5V_SW
DV15
AO4449
Q701
+5V_STB
PWR_ON_2
BUCK CONVERTER
TCL_Tuner
DVB-C/T/T2
PWR_12V
CI CARD PWR
PWR_ON_2
POWER protect
USB multi-media
DV11
Depend on panel
PCMCIA CARD
G5250M1T1U
U102
NT72562
+5V_STB
FB751
K9F1G08U0D
-SIB0
BUCK CONVERTER
1mA
FB411
PANEL_22"~55"
1404 mA
AD87588
FB750
80 mA
SY8104ADC
U713
MAIN CHIP
+3V3_TUNER
PANEL_VCC_ON/OFF
10mA
+5V_SW
AUDIO AMP
FB412
1945mA
SY8088AAC
U702
POWER SWITCH
USB
DV33
PANEL_VCC
DV33SB
+5V_STB
UP0113
U712
LDO CONVERTER
AON4421
Q750
LVDS_VDD
285mA
LDO
1367 mA
POWER SWITCH
110 mA
+5V_SW
1367 mA
AUDIO_12V
+5V_SW
SPEC 5.5A(5V)
Act :
VCC_CI
+5V_SW
SPEC 4 A (1.15V)
Act :
SPEC 1.5 A (3.3V)
Act :
285mA
PWR_ON_2
TUNER
PWR_12V
SPEC 1 A (3.3V)
Act : 435 mA
SPEC 1 A (CI power)
Act : 80 mA
SPEC 1.35 A (3.3V)
Act : 230 mA
SPEC 7A
BUCK CONVERTER
PWR_12V
1367 mA
SPEC 1 A (1.5V)
Act : 419 mA
SPEC 500mA (High 18V / Low 13V)
Act :
MP8124GD-Z
U202
2581 mA(5V)
13V/18V SW & LNB EN
TUNER
S2_Tuner
DVB-S/S2
NT72562
230 mA
LG_Tuner
DVB-S/S2
BUCK CONVERTER
NAND FLASH
1.3A
NT72562
RT6206B
U706
+5V or +12V
CI_PWR_EN
AZ1117_1.35A
U203_SOT-223
500 mA
SY8088AAC
U703_SOT_23_5
BUCK CONVERTER
NT72562
+5V_SW
20210_202.eps