Circuit Descriptions
EN 31TPM5.1E LA 7.
2011-Sep-02
7.3 T-CON Architecture
Refer to figure Figure 7-7 for the power architecture of this
platform.
Figure 7-7 T-CON Architecture
7.3.1 T-CON Unit
The T-CON section includes the T-CON IC, a Level shift IC, a
DC to DC conversion IC and a correction Gamma IC. The
T-CON IC will transform the LVDS signal into a mini-LVDS
signal with a 6 pairs Level shifter IC. This is a 9 channel
level-shifter intended for use in LCD display applications such
as TVs and monitors. The device converts the logic-level
signals generated by the Timing Controller (T-CON) to the
high-level signals used by the display panel. The gamma IC
outputs eight voltage references for gamma correction in TFT
LCDs and one voltage reference for VCOM. Each gamma
reference voltage has its own 10-bit digital-to-analog converter
(DAC) and buffer to ensure a stable voltage. The VCOM
reference voltage has its own 10-bit DAC and an amplifier to
ensure a stable voltage when critical levels and patterns are
displayed. The DC to DC IC multiple-output power-supply
controller generates all the supply rails for thin-film transistor
(TFT) liquid-crystal display (LCD) panels in TVs and monitors
operating from a regulated 12 V input. It includes a step-down
and a step-up regulator, a positive and a negative charge
pump, a dual-mode logic controlled high-voltage switch control
block, and an adjustable timing power-good output. The
positive and negative charge-pump regulators provide the TFT
gate driver supply voltages.
18850_210_100204.eps
100210
TCON
TL2428MC
U7000
TCON NVM
24C32
TCON NVM
24C32
U7001
I
2
C
LVDS In
RML0-5 / RML CLK
LML0-5 / LML CLK
GCLK1-6
U7052
CLK1-6
Gamma / V-con
MAX9668ETP
Gamma / V-con
MAX9668ETP
I
2
C
U7051
VCOM
GAMMA
LCD Panel
Gate + Source Driver
CN7050 / CN7051
Level shift
TPS651592RHD
Level shift
TPS651592RHD
To Next Page
Loading...
