DocumentCode :
2644992
Title :
A single-stage high efficiency long-life off-line LED driver based on the DCM Cuk converter
Author :
Soares, Guilherme M. ; Almeida, Pedro S. ; Pinto, Danilo P. ; Braga, Henrique A C
Author_Institution :
Fed. Univ. of Juiz de Fora - UFJF, Juiz de Fora, Brazil
fYear :
2012
fDate :
25-28 Oct. 2012
Firstpage :
4509
Lastpage :
4514
Abstract :
This work proposes an off-line LED driver, based on the Cuk converter operating in discontinuous conduction mode. Complete analysis of the converter is carried out and a design methodology is presented, focused in reducing output filtering capacitance, still achieving acceptable current ripple on the output and eliminating the need for electrolytic capacitors. Photometric data is gathered and fed into the design methodology in order to optimize output current ripple selection and capacitor reduction. Experimental results were obtained from a high power factor high efficiency prototype feeding 56 series-associated high-power LEDs from 220 VAC-60 Hz mains.
Keywords :
driver circuits; light emitting diodes; power convertors; power factor; DCM Cuk converter; capacitor reduction; current ripple selection; discontinuous conduction mode; electrolytic capacitors; frequency 60 Hz; high power factor; output filtering capacitance reduction; photometric data; series-associated high-power LED; single-stage high efficiency long-life off-line LED driver; voltage 220 V; Heating; Light emitting diodes; Matched filters; Switches; Electrolytic Capacitor Avoidance; LED Off-line Drivers; Light-Emitting Diodes; Power Factor Correction;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Montreal, QC
ISSN :
1553-572X
Print_ISBN :
978-1-4673-2419-9
Electronic_ISBN :
1553-572X
Type :
conf
DOI :
10.1109/IECON.2012.6389458
Filename :
6389458
Link To Document :
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