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A Study on the Modularization of LED Driver for Illumination Using a Fly-Back Converter  

Choi, Jin-Bong (지에프텍(주) 기술연구소)
Kim, Kwan-Woo (지에프텍(주) 기술연구소)
Jung, Young-Gook (대불대 융합기술학부)
Lim, Young-Cheol (전남대 전기공학과)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.14, no.6, 2009 , pp. 504-513 More about this Journal
Abstract
This paper proposes the new type LED driver modularization for illumination LED driver. The proposed LED driver circuit insulates a hot GND of AC input power and a cold GND of LED driver part by using a fly-back converter. In order to control easily the current of the LED, the fly-back converter is operated in the discontinuous mode with excellent dynamic characteristics, and the characteristics of the LED are verified after the closed loop control is performed using a KIA2431. The LED driver module allows the wide AC power input ranges and realizes the burst dimming function which directly regulates a PWM control IC. This paper describes the operation principle of the LED driver module and it is proved the usefulness through the real model with experimentation. Besides, this paper proposes the multi-channel LED driver which the miniaturized and modularized LED driver module are connected by parallel, and verified its propriety by experiments.
Keywords
LED; Fly-back converter; Multi-channel LED driver; Modularization; Burst dimming; Analogue dimming;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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