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Appl. Sci. 2017, 7(2), 115;

A Single-Stage LED Tube Lamp Driver with Power-Factor Corrections and Soft Switching for Energy-Saving Indoor Lighting Applications

Department of Electrical Engineering, I-Shou University, Dashu District, Kaohsiung City 84001, Taiwan
Author to whom correspondence should be addressed.
Academic Editor: Eric Ka-wai Cheng
Received: 4 November 2016 / Revised: 15 January 2017 / Accepted: 17 January 2017 / Published: 24 January 2017
(This article belongs to the Special Issue Energy Saving)
Full-Text   |   PDF [4913 KB, uploaded 26 January 2017]   |  


This paper presents a single-stage alternating current (AC)/direct current (DC) light-emitting diode (LED) tube lamp driver for energy-saving indoor lighting applications; this driver features power-factor corrections and soft switching, and also integrates a dual buck-boost converter with coupled inductors and a half-bridge series resonant converter cascaded with a bridge rectifier into a single-stage power-conversion topology. The features of the presented driver are high efficiency (>91%), satisfying power factor (PF > 0.96), low input-current total-harmonic distortion (THD < 10%), low output voltage ripple factor (<7.5%), low output current ripple factor (<8%), and zero-voltage switching (ZVS) obtained on both power switches. Operational principles are described in detail, and experimental results obtained from an 18 W-rated LED tube lamp for T8/T10 fluorescent lamp replacements with input utility-line voltages ranging from 100 V to 120 V have demonstrated the functionality of the presented driver suitable for indoor lighting applications. View Full-Text
Keywords: converter; driver; light-emitting diode (LED) converter; driver; light-emitting diode (LED)

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Cheng, C.-A.; Chang, E.-C.; Tseng, C.-H.; Chung, T.-Y. A Single-Stage LED Tube Lamp Driver with Power-Factor Corrections and Soft Switching for Energy-Saving Indoor Lighting Applications. Appl. Sci. 2017, 7, 115.

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