Design and implementation of high frequency AC-LED driver with digital dimming

Chao Lung Kuo, Tsorng-Juu Liang, Kai Hui Chen, Jiann-Fuh Chen

研究成果: Conference contribution

32 引文 斯高帕斯(Scopus)

摘要

In this paper a two-stage high frequency AC-LED driver is designed and studied. The front-stage is a boost power-factor correction (PFC) circuit and the rear-stage is a half-bridge series resonant inverter. The lighting characteristics of high frequency AC voltage driving LEDs, and the effect of LED to half-bridge resonant circuit are discussed. The proposed design uses the digital dimming control to reduce LED chromaticity shift, and connect the LEDs as a full-bridge rectifier to simplify the current sensing circuit. An 80-W high frequency AC-LED driver with universal voltage input (90-264 Vrms) is implemented to verify the design. Experimental results show that the variation of chromaticity coordinates (u′, v′) from brightness 100% to 20% is within 0.0023.

原文English
主出版物標題ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
主出版物子標題Nano-Bio Circuit Fabrics and Systems
頁面3713-3716
頁數4
DOIs
出版狀態Published - 2010 八月 31
事件2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010 - Paris, France
持續時間: 2010 五月 302010 六月 2

出版系列

名字ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems

Other

Other2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010
國家/地區France
城市Paris
期間10-05-3010-06-02

All Science Journal Classification (ASJC) codes

  • 硬體和架構
  • 電氣與電子工程

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