Low-current ripple LED driver by two-phase driving approach

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

1 Scopus Citations
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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)1804-1806
Journal / PublicationElectronics Letters
Volume51
Issue number22
Online published13 Oct 2015
Publication statusPublished - 22 Oct 2015
Externally publishedYes

Abstract

A two-phase driving approach for light-emitting diode (LED) power supply is proposed. The approach uses two rectangular current sources working complementarily to supply a constant current to the LED string so that the output current can contain very low ripple even without the use of any electrolytic capacitor in the driver circuit. A dual asymmetrical half-bridge converter with power factor correction is used to realise the approach. A 60 W prototype is built and tested to validate the idea.

Citation Format(s)

Low-current ripple LED driver by two-phase driving approach. / Wong, Chi Shing; Lai, Yuk Ming; Loo, Ka Hong; Tse, Chi K.

In: Electronics Letters, Vol. 51, No. 22, 22.10.2015, p. 1804-1806.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal