NL10276AC30-01 查看數據表（PDF） - NEC => Renesas Technology

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NL10276AC30-01

38 cm (15 inches), 1024 × 768 pixels, Full-color, Multi-scan Function, Built-in backlight with inverter Ultra wide viewing angle

NEC => Renesas Technology 

NL10276AC30-01A

POWER SUPPLY DESIGN

(1) Ripple voltage of the supply voltage

Please note that the ripple at the input connector of the module should be within the values shown in this table.

If the ripple would be beyond these values, the noise might appear on the screen.

Acceptable range

VDD

(for logic and LCD driver)

≤ 100 mVp-p

VDDB

(for backlight)

≤ 200 mVp-p

Note The acceptable range of ripple voltage includes spike noises.

Example of the power supply connection to minimize the ripple voltage

a) Separate the power supply

b) Put the filter

Power

Power

VDD

VDDB

Power

Filter

Filter

VDD

VDDB

(2) Current wave in the luminance control mode

In the luminance control mode, the rush current below flows into the inverter of the module. The duty cycle

varies from 100% through 20% depending on the luminance control level. This might cause the noise on the

screen. Please evaluate the appropriate value of the capacitor in the filter to eliminate the noise.

Filter

Inverter circuit of NL10276AC30-01A

Customer’s power

supply

(12 V)

To VDD

Rush

current

GND

Duty

Frequency*

*Frequency:

Vsync frequency × K*

*Vsync ≤ 75 Hz: K = 4.6

> 75 Hz: K = 3.6

6

Data Sheet EN0417EJ1V0DS00

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