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Development of Wide-Range Brightness Controller of LED Backlight for Avionic Displays  

Lim, Soo-Hyun (경상대 제어계측공학과)
Lim, Jeong-Gyu (경상대 제어계측공학과)
Chung, Se-Kyo (경상대 전기전자공학부)
Shin, Hwi-Beom (경상대 전기전자공학부)
Shin, Min-Jae (국방과학연구소)
Sohn, Seung-Gul (국방과학연구소)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.13, no.4, 2008 , pp. 287-294 More about this Journal
Abstract
This paper describes an implementation of a wide-range dimming controller of a LED backlight for Avionics applications such as a control display unit(CDU) and multi-function display(MFD). The digital dimming controller employing a current controlled buck converter and light sensor feedback is proposed. The proposed system provides a wide dimming control range of from 150fL to 0.05fL(3000:1) required for avionic displays. The experimental results are provided to show the control performance.
Keywords
Avionic displays; Backlight; white LED; Dimming controller;
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