An Electrolytic Capacitor-Less AC-DC LED Driver with a Low Power Processing Auxiliary Circuit and Ceramic Capacitors for Ripple Power Decoupling

Zhenyu Shan, Xiaomei Chen, Shengwen Fan, Juri Jatskevich, Chi K. Tse

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


Traditional ac-dc LED drivers include a large electrolytic capacitor to decouple the double-line frequency ripple power from the utility grid, which shortens the lifespan of LED lamps. This paper presents an electrolytic capacitor-less ac-dc LED driver with a low power processing auxiliary circuit and ceramic capacitors decoupling the ripple power. In this structure, the redundant power processed by the auxiliary circuit is lower and fewer components are used, comparing with existing similar designs. In addition, the ceramic capacitors that are used as the energy storage have higher energy density and lower cost. The capacitance drift of ceramic capacitors is modeled and analyzed, and the parameter design for the ceramic capacitor bank is given. Experiments on a prototype are carried out to verify the performance and design of the proposed LED driver.

Original languageEnglish
Title of host publication2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages8
ISBN (Electronic)9781479973118
Publication statusPublished - 3 Dec 2018
Event10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States
Duration: 23 Sep 201827 Sep 2018

Publication series

Name2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018


Conference10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Country/TerritoryUnited States


  • Ac-dc power conversion
  • Electrolytic capacitor less
  • LED driver
  • Ripple power decoupiing

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Control and Optimization
  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems and Management

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