Analysis of low‐frequency current ripple transmission in series‐resonant LED drivers. Issue 9 (1st April 2015)

• Record Type: Journal Article
• Authors: de Melo, M.F.; Vizzotto, W.D.; Chies, L.; Dalla Costa, M.A.; Alonso, J.M.
• Is Part Of: Electronics letters. Volume 51:Issue 9(2015)
• Page Start: 716
• Page End: 717
• Publication Date: 2015-04-01
• Subjects: light emitting diodes -- driver circuits; series‐resonant converter -- light emitting diode -- current ripple transmission -- series resonant LED drivers -- SRC -- bus voltage ripple -- design methodology -- current ripple reduction -- attenuation; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.0238
• Languages: English
• ISSNs: 0013-5194

Abstract

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.