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http://dx.doi.org/10.5207/JIEIE.2012.26.8.001

LED Driving Circuit using Charge Pump for Voltage Distribution  

Yun, Jang-Hee (숭실대학교 대학원 전기공학과)
Yoo, Sung-Ho (숭실대학교 대학원 전기공학과)
Ryeom, Jeong-Duk (숭실대학교 전기공학부)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.26, no.8, 2012 , pp. 1-7 More about this Journal
Abstract
In this paper, a new LED driving circuit which is able to control dimming of LED is proposed using charge pump. The proposed LED driving circuit steps down the input voltage to operate LED without DC-DC converter. The operation of this driving circuit is verified by P-Spice simulation, and the characteristics of the driving circuit is measured and evaluated in the experiments. As a result, the driving circuit efficiency of 88.5[%] is obtained when all LEDs are turned on by digital control method at the highest dimming level(255/255).
Keywords
LED; Driving Circuit; Voltage Division; Efficiency; Dimming;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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