AN024 Datasheet, PDF (1/7 Pages) Analog Intergrations Corporation – For LCD Motherboard Power Supply Using AIC1563

AN024
For LCD Motherboard Power Supply Using AIC1563
Introduction
The newest technology of monitor is Flat-Panel Display
(FPD). In FPD field, the widest and most grow up
application is Liquid Crystal Display (LCD). It has many
advantages, such as: light weight, less space, low
voltage operating and power saving. They are very
attractive. Certainly, on the brightness, contrast and the
activity transient despondence of display, they can’t
compare with Cathode Ray Tube (CRT) monitor.
Fig. 1 shows the structure of LCD monitor (LCDM),
there are three main parts in it: motherboard, panel
and inverter. For normal working, LCD monitor needs a
good power management to get in. This application
note focus on the power design for the motherboard of
LCD. It needs 5V; 3.3V and 2.5V output voltage, which
depend on vender’s desire. This application note will
discuss the steps of design.
RGB
DVI
Video
ADC
TMDS
Deccoder
Source Driver
Key Pads
Scaler
MCU
EEPROM
OSD PLL
LCD Panel
‘ ^Adaptor
LCD MB Power
Fig.1 LCD structure
LCD Panel Power
Inverter
February, 2002
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