NDLI: Design and implementation of high frequency AC-LED driver with digital dimming

Content Provider	IEEE Xplore Digital Library
Author	Chao-Lung Kuo Tsorng-Juu Liang Kai-Hui Chen Jiann-Fuh Chen
Copyright Year	2010
Description	Author affiliation: Advanced Power Electronics Center, Department of Electrical Engineering, National Cheng Kung University, Tainan, Taiwan (Chao-Lung Kuo; Tsorng-Juu Liang; Kai-Hui Chen; Jiann-Fuh Chen)
Abstract	In this paper a two-stage high frequency AC-LED driver is designed and studied. The front-stage is a boost power-factor correction (PFC) circuit and the rear-stage is a halfbridge series resonant inverter. The lighting characteristics of high frequency AC voltage driving LEDs, and the effect of LED to half-bridge resonant circuit are discussed. The proposed design uses the digital dimming control to reduce LED chromaticity shift, and connect the LEDs as a full-bridge rectifier to simplify the current sensing circuit. An 80-W high frequency AC-LED driver with universal voltage input (90~264 Vrms) is implemented to verify the design. Experimental results show that the variation of chromaticity coordinates (u', v') from brightness 100% to 20% is within 0.0023.
Starting Page	3713
Ending Page	3716
File Size	562088
Page Count	4
File Format	PDF
ISBN	9781424453085
DOI	10.1109/ISCAS.2010.5537751
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-30
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Driver circuits Light emitting diodes RLC circuits Voltage Resonant inverters LED lamps Digital control Rectifiers Brightness High frequency AC-LED Digital dimming
Content Type	Text
Resource Type	Article

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