DocumentCode
45234
Title
Analysis of low-frequency current ripple transmission in series-resonant LED drivers
Author
de Melo, M.F. ; Vizzotto, W.D. ; Chies, L. ; Dalla Costa, M.A. ; Alonso, J.M.
Author_Institution
Intell. in Lighting - GEDRE, Fed. Univ. of Santa Maria, Santa Maria, Brazil
Volume
51
Issue
9
fYear
2015
fDate
4 30 2015
Firstpage
716
Lastpage
717
Abstract
The use of series-resonant converters (SRCs) in light-emitting diode (LED) drivers has increased due to its simplicity and high efficiency. Furthermore, the use of a SRC provides reduction of the low-frequency ripple in the LED current, originated by the bus voltage ripple. Thus, an analysis of the SRC aiming to define a design methodology to improve the current ripple reduction provided by the SRC is proposed. Moreover, a discussion about the main factors that have influenced ripple reduction and the limits for this attenuation is presented, which have not been explored in the literature hither to.
Keywords
driver circuits; light emitting diodes; SRC; attenuation; bus voltage ripple; current ripple reduction; current ripple transmission; design methodology; light emitting diode; series resonant LED drivers; series-resonant converter;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2015.0238
Filename
7095675
Link To Document