NDLI: A single-stage driver for high power LEDs

Content Provider	IEEE Xplore Digital Library
Author	Chun-An Cheng Chun-Hsien Yen
Copyright Year	2011
Description	Author affiliation: Power Electronics Lab, Dept. of Electrical Engineering, I-Shou University, Taiwan, R.O.C. (Chun-An Cheng; Chun-Hsien Yen)
Abstract	This paper proposes a single-stage driver for highpower light-emitting diodes (LEDs). The presented circuit combines an active power-factor-correction (PFC) converter with a half-bridge-type LLC resonant converter. The active PFC converter consists of two boost-converted cells to achieve input current shaping with interleaving methods. The halfbridge-type LLC resonant converter is designed for obtaining soft-switching on two power switches to reduce their switching losses. The proposed driver features cost-effectiveness, low levels of input current ripple, low switching losses, high power factor, fewer components and reduced leakage current. Finally, a prototype driver with current-equalizing function is developed to supply 140W high-power LEDs with a 110V utility-line input voltage. Simulation and experimental results demonstrate the feasibility of the proposed circuit.
Starting Page	2666
Ending Page	2671
File Size	1037266
Page Count	6
File Format	PDF
ISBN	9781424487547
e-ISBN	9781424487561
e-ISBN	9781424487554
DOI	10.1109/ICIEA.2011.5976047
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Light emitting diodes Inductors Driver circuits Capacitors Voltage measurement Resonant frequency Current measurement power-factor-correction Converter LEDs LLC resonant inverter
Content Type	Text
Resource Type	Article

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