A Multiplexing Off-Line LED Driver Achieves High Power Factor and Flicker-Free Operation

Peng Fang; Yan Fei Liu; Paresh C. Sen

doi:10.1109/ECCE.2019.8912738

A Multiplexing Off-Line LED Driver Achieves High Power Factor and Flicker-Free Operation

Peng Fang, Yan Fei Liu, Paresh C. Sen

Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Although a single-stage off-line LED driver can achieve low cost and high efficiency, the notorious double-line-frequency flicker issue with a single-stage LED driver limits its usage in high-quality lighting applications. To solve lighting flicker, multiplexing operation is proposed in this paper. One switching cycle is further divided into two portions, namely phase one and phase two, which produces a main output voltage and an opposite ripple voltage. The main and the opposite ripple voltage are connected in series to form the LED voltage, which is a DC because of ripple cancellation. Therefore, a DC LED current can be produced and achieves flicker-free LED driving performance. A 7.5W experimental prototype had been built and tested to verify the design concept.

Original language	English (US)
Title of host publication	2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1148-1154
Number of pages	7
ISBN (Electronic)	9781728103952
DOIs	https://doi.org/10.1109/ECCE.2019.8912738
State	Published - Sep 2019
Event	11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States Duration: Sep 29 2019 → Oct 3 2019

Publication series

Name	2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

Conference

Conference	11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Country/Territory	United States
City	Baltimore
Period	9/29/19 → 10/3/19

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

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10.1109/ECCE.2019.8912738

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Fang, P., Liu, Y. F., & Sen, P. C. (2019). A Multiplexing Off-Line LED Driver Achieves High Power Factor and Flicker-Free Operation. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 1148-1154). Article 8912738 (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2019.8912738

A Multiplexing Off-Line LED Driver Achieves High Power Factor and Flicker-Free Operation. / Fang, Peng; Liu, Yan Fei; Sen, Paresh C.
2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 1148-1154 8912738 (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Fang, P, Liu, YF & Sen, PC 2019, A Multiplexing Off-Line LED Driver Achieves High Power Factor and Flicker-Free Operation. in 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019., 8912738, 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019, Institute of Electrical and Electronics Engineers Inc., pp. 1148-1154, 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019, Baltimore, United States, 9/29/19. https://doi.org/10.1109/ECCE.2019.8912738

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A Multiplexing Off-Line LED Driver Achieves High Power Factor and Flicker-Free Operation

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