Dimmable flicker-free Linear LED Driver

Ching Ning Jao, Li Jie Huang, Chin Hsia

研究成果: 圖書/報告稿件的類型會議稿件同行評審

2 引文 斯高帕斯(Scopus)

摘要

The paper presents the design of a linear dimmable flicker-free LED driver. The driver consists of a preamplifier in series with a linear regulator and forms a drive loop with the LED string. The output current of the pre-amplifier adjusts adaptively with the amplitude of the AC input bus and therefore, the voltage across the linear regulator remains at the minimum required to maintain the desired string current while reducing the power variation on the LEDs. In addition, the linear regulator detects and provides a constant current to the LEDs based on fluctuations in the input voltage, which effectively eliminates flicker and maintains high system efficiency. The designed driver is compatible with a variety of triac circuits and achieves flicker-free in all dimming situations. Operating across an AC input voltage of 110~150 V, with an input power of 4.5 W, the LED driver achieves larger than 85% efficiency, percent flicker of 0.03%, and power factor of 72%.

原文英語
主出版物標題2020 IEEE International Conference on Consumer Electronics - Taiwan, ICCE-Taiwan 2020
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781728173993
DOIs
出版狀態已出版 - 28 09 2020
對外發佈
事件7th IEEE International Conference on Consumer Electronics - Taiwan, ICCE-Taiwan 2020 - Taoyuan, 台灣
持續時間: 28 09 202030 09 2020

出版系列

名字2020 IEEE International Conference on Consumer Electronics - Taiwan, ICCE-Taiwan 2020

Conference

Conference7th IEEE International Conference on Consumer Electronics - Taiwan, ICCE-Taiwan 2020
國家/地區台灣
城市Taoyuan
期間28/09/2030/09/20

文獻附註

Publisher Copyright:
© 2020 IEEE.

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