Power Architecture Platform; Power Supply Unit; Diversity - Philips Q549.2E LA Service Manual

EN 44 7. Q549.2E LA
7.2 Power Architecture
Refer to figure Figure 7-3
platform.
PSU
P la tfo rm
P o w e r
3V3stby
+12V
24V** Inverter*
24 Vs
(+/-12 Vs opt)
24V
7.2.1

Power Supply Unit

All power supplies are a black box for Service. When defective,
a new board must be ordered and the defective one must be
returned, unless the main fuse of the board is broken. Always
replace a defective fuse with one with the correct
specifications! This part is available in the regular market.
Consult the Service website for the order codes of the boards.
In the TV543 Elite Core platform, for sets up to and including
47", the Integrated Power Board (IPB) - incl. inverter is used.
For sets of 52 " and 56", a conventional PSU (with additional
inverters) is used.
In this manual, no detailed information is available because of
design protection issues.
The output voltages to the chassis are:
• +3V3-STANDBY (standby-mode only)
• +12V (on-mode)
• +Vsnd (+24V) (audio power) (on-mode)
• +24V (bolt-on power) (on-mode)
• IPB: High voltage to the LCD panel (for sets up to and
including 47").
2009-May-08
Circuit Descriptions
for the power architecture of this
F use
12VD isp
SSB
Standby
+3V3 stby
+1V2 +1V2-ST AN D BY
BL D IM *
Lam p On *
12V
U ndervoltage Sw itches off
detect
+3V3 and
+5V
D etect 2
(12V sense)
Power-OK
Stby P
Am bilight
Bolt - on
Figure 7-3 Power Architecture TV543/92 platform
LC D
Power-on
PNX5100
Lam p On
F use
+1V2
D ual
D C /D C
Enable -3V3
+3V3
+2V5
+3V3F
+1V8
2.5V 1%
voltage ref
Boost conv .
+33V
(opt)
+1V2
+5V
D ual
D C /D C
+5V
tuner
D etect 1
Audio proc
+ C lass D
+3V3 (SSB)
V inverter 4kV*
V backlight 24 V**
7.2.2

Diversity

Below find an overview of the different PSUs that are used:
Table 7-1 Supply diversity
Supplier PSU
LGIT PLHL-T826A
Delta
DPS-298CP A
Delta DPS-411AP-3 A
V display
Boost control (Opt)
BL D IM
+1V2-PNX85XX
+3V3
+2V5 +2V5 (loc.Contr.FPGA)
+1V8 +1V8-PNX85XX
+1V8 +1V8-PNX5100
+33V-TUN(analog)
AN D
+1V2-PN X 5100
+5V
+5V-T un +5V-T U N
*: present in inverterless displays
**: present in displays w ith internal inverter
18310_202_090317.eps
Model Input Voltage Range
32" High Mains (198- 265 Vac)
37" High Mains (198- 265 Vac)
56" High Mains (198- 265 Vac)
Inverter**
Display
090317