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

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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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

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-84946095141&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(8107d21e-f097-49ac-9415-44c48da13b2a).html

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.

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Publication fingerprints text

100
Light-Emitting Diod... Engineering
33
Power Supply Engineering
33
Current Source Engineering
33
Electric Power Fact... Engineering
33
Current Output Engineering
33
Electrolytic Capaci... Engineering
33
Driver Circuit Engineering
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Citation Format(s)

[ RIS ] [ BibTeX ]
Low-current ripple LED driver by two-phase driving approach. / Wong, Chi Shing; Lai, Yuk Ming; Loo, Ka Hong et al.
In: Electronics Letters, Vol. 51, No. 22, 22.10.2015, p. 1804-1806.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review