93% Efficiency and 0.99 power factor in pseudo-linear LED driver

Shao Wei Chiu, Chun Chieh Kuo, Kai Cheng Chuang, Wen Hau Yang, Ke-Horng Chen, Chin Long Wey, Ying Hsi Lin, Jian Ru Lin, Lsung Yen Lsai, Jui Lung Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The proposed pseudo-linear LED driver can effectively solve the serious flicker in conventional linear LED driver (LLD). Besides, it has good electromagnetic interference (EMI) performance similar to that in conventional LLD at high AC input voltage. In the meanwhile, it has high power factor (PF) similar to boost switching regulator (SWR) LED driver at low AC input voltage. Furthermore, owing to the combination of line filter and the active full bridge rectifier, the pseudo-linear LED driver has a compact solution and high efficiency. The test chip was fabricated in 0.5μm 500V LDMOS process. Experimental results show 93% high efficiency, 6% total harmonic distortion (THD), and 0.99 PF at the power of 7W.

Original languageEnglish
Title of host publication2016 IEEE Asian Solid-State Circuits Conference, A-SSCC 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages53-56
Number of pages4
ISBN (Electronic)9781509037001
DOIs
StatePublished - 6 Feb 2017
Event12th IEEE Asian Solid-State Circuits Conference, A-SSCC 2016 - Toyama, Japan
Duration: 7 Nov 20169 Nov 2016

Publication series

Name2016 IEEE Asian Solid-State Circuits Conference, A-SSCC 2016 - Proceedings

Conference

Conference12th IEEE Asian Solid-State Circuits Conference, A-SSCC 2016
CountryJapan
CityToyama
Period7/11/169/11/16

Keywords

  • boost switching regulator (SWR)
  • power factor (PF)
  • pseudo-linear LED driver
  • total harmonic distortion (THD)

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