Audio LCD Controller Card 10-42 Inch Universal LED Display/LCD Backlight

Description

Audio LCD Controller Card 10-42 Inch Universal LED Display/LCD Backlight
Features:
It can be used for 10-42inch LED TV backlight booster board.
BOOST structure, conversion efficiency of more than 92%, low heat generation, stable product, longer service life, small PCB size, ultra-thin design.
The current control error is within ±5%, and the flexible and convenient current adjustment design can be easily changed to match the screens of different manufacturers and models. Designed to meet for EMC requirements and CE certified.
The voltage is automatically adapted, and the voltage string of the backlight module is automatically adjusted. The focus is on the constant current.
Wound with magnetic silicon ring magnetism, higher temperature coefficient, higher magnetic saturation and higher stability.
Compared to the Gold-16E, this product adds current regulation function.
Specifications:
Material: PCB
Input Voltage: 12-25V
Output Voltage: 35-85V
Output Current: Default 100MA(can be increased to 800MA)
Absolute rating:
24V Input: Vout=75V, Iout=800mA or 60W Max
12V Input: Vout=75V, Iout=400mA or 30W Max
Current adjustment: 30-200mA
Suitable TV/Monitor Size: 12-24inch
Package list:
1 x Driver Board
Note:
You need to have a certain basic knowledge of physics and electronics, and you need to have a clear understanding of the core components of liquid crystal displays, LCD TVs and other products.
The limit parameter refers to the maximum bearing capacity of the product in the application process. In actual use, please use it below the limit parameter.
Backplane common electronic symbol code Chinese and English are as follows:
A. VCC: The supply voltage is positive, the circuit supply voltage (voltage is usually12Vor24V)
B. ON/OFF, ON, EN, ON_BLWait: Switching pin, switching signal pin (voltage range is usually in2.5V-5Vbetween)
C. PDM, VDAJ, BL-PWMWait: Brightness adjustment feet, or called dimming feet. (Dimming will have two modes, one is the digital mode-PWM, One is analog dimming-DC. PWMCalled pulse width modulation, which produces a rectangular Square wave signal, the frequency is generally200HZ-2KHZ,The magnitude of the voltage is usually3.3V, & Lt;PDIMIs the English abbreviation,DimIs the meaning of the dark meaning of the word meaning that "brightness." Analog dimming is carried out By means of a DC voltage, usually provided directly to the tuning pin0V-5VofDCVoltage to control the brightness of the purpose.
GND: ground (power supply negative)
LED +:Light -emitting diode (light bar) positive
LED-:Light-emitting diode (light bar) negative
The above symbols contain most of the LCD motherboard with the backlight on the code, the connection as long as the corresponding code in accordance with their respective access will not be wrong.
Frequently Asked Questions Before Purchasing:
Question 1: installed bright not up?
1. Check the polarity of the cable is correct? LED positive and negative are correct.
2. Measure the supply voltage to see if there is no voltage to the board, the machine boot state to measure the LED + there is no boost, generally higher than the VCC voltage.
3. If there is no boost, please measure the voltage on the ON pin, the normal voltage should be about 3.3V.
4. If the above conditions are normal, then again in the case of shutdown power to measure the LED - the resistance between the series of GND, the normal should be a small resistance, 2 ohms or less.
Check the above steps are normal after the rest is only possible that the problem is the LED light bar.
Question 2: machine bright, but the brightness is not enough?
If the brightness is still but light enough to measure when the PDIM pin, if the voltage has been adjusted by more than 4V need to change the voltage by other means, it will directly float the foot test What, if the brightness can meet the way By changing the pin voltage to achieve brightness requirements.
If the way through the foot off the brightness is not enough to increase the brightness of the other way through.
Question 1: a constant size of the TV driver board can not substitute?
A: As long as the light bar working voltage of 80V or less no matter how many inches of TV, this product can be lit. Note: This is only lit, not to say that is appropriate. If you need the exact answer the best Way is to provide the panel backlight module parameters (light of the operating voltage, rated current, etc.), if we can provide accurate data-like "private custom" -like service.
Then again, if that can not determine the number of volt-volt light bar when the how to do it? This time there is a very simple way is to find the original machine above the constant current driver board to see it that the output filter The electrolytic capacitor voltage is the number of volts? If it is 100V pressure, it shows that the lamp voltage will not exceed 80V, then I can point to this product is up, and decisively photographed on the line.
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