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

Chi Shing Wong; Yuk Ming Lai; Ka Hong Loo; Chi Kong Tse

doi:10.1049/el.2015.1479

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

Chi Shing Wong, Yuk Ming Lai, Ka Hong Loo, Chi Kong Tse

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

2 Citations (Scopus)

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.

Original language	English
Pages (from-to)	1804-1806
Number of pages	3
Journal	Electronics Letters
Volume	51
Issue number	22
DOIs	https://doi.org/10.1049/el.2015.1479
Publication status	Published - 1 Jan 2015

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1049/el.2015.1479

Cite this

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

Abstract

ASJC Scopus subject areas

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