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http://dx.doi.org/10.6113/TKPE.2011.16.1.64

Zero-Transient Current Control Method for PWM Dimming of LED  

Yoon, Young-Nam (국민대 전자공학과)
Lee, Sang-Hyun (삼성전자 LCD 사업부 개발팀)
Cho, Sang-Ho (국민대 전자공학과)
Hong, Sung-Soo (국민대 전자정보통신공학부)
Kim, Chang-Sub (경원대 전기공학과)
Lee, Hyo-Bum (삼성전기 CDS 사업부)
Han, Sang-Kyoo (국민대 전자정보통신공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.16, no.1, 2011 , pp. 64-70 More about this Journal
Abstract
This paper presents a zero-transient current control method for PWM dimming of LED. Since the proposed LED current control method has no transient state, it features a high resolution, high linearity, and no current overshoot through LED along a wide dimming range. The operational principles of the proposed LED current control circuit are presented. To confirm the validity of the proposed method experimental results from a prototype circuit of the 46-inch LCD TV are given.
Keywords
LED current control; zero-transient; PWM dimming;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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