A current ripple cancellation circuit for electrolytic capacitor-less AC-DC LED driver

Kuan Wen Lee, Yi Hsun Hsieh, Tsorng Juu Liang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

42 Citations (Scopus)

Abstract

This paper presents a bidirectional buck-boost current ripple cancellation circuit applied to electrolytic capacitor-less flyback LED driver with power factor correction (PFC). By operating the flyback converter in discontinuous conduction mode (DCM), high power factor can be obtained under universal input voltage range. The bidirectional buck-boost converter can minimize the twice-line-frequency output current ripple using simple open-loop pulse width modulation (PWM) control without complex control scheme, and modularization is possible for other types of converter at the PFC stage. The output current ripple can be significantly reduced without using electrolytic capacitors (E-Cap) and the power factor is near unity under universal input voltage. Finally, a 700 mA / 20 W hardware prototype is built to verify the feasibility of the proposed method.

Original languageEnglish
Title of host publication2013 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
Pages1058-1061
Number of pages4
DOIs
Publication statusPublished - 2013
Event28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013 - Long Beach, CA, United States
Duration: 2013 Mar 172013 Mar 21

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Other

Other28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
CountryUnited States
CityLong Beach, CA
Period13-03-1713-03-21

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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