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HOU Dian-li,ZHANG Qing-fan,ZHANG Long,LIU Xiao.Improvement and Design of a LED Driver with PFC[J].JOURNAL OF POWER SUPPLY,2011,9(2):34-38
Improvement and Design of a LED Driver with PFC
Received:October 18, 2010  Revised:October 31, 2010
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DOI:10.13234/j.issn.2095-2805.2011.2.34
Keywords:valley-filled PFC  LED  flyback  constant current source
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AuthorInstitutionEmail
HOU Dian-li School of Electronic and Electrical Engineering, Ludong University hdianli@163.com
ZHANG Qing-fan School of Control Science and Engineering, Shandong University zhangqf@sdu.edu.cn
ZHANG Long School of Electronic and Electrical Engineering, Ludong University
LIU Xiao School of Control Science and Engineering, Shandong University
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Abstract:
      LED lighting has been more and more important in the world,LED driver has been described according to the character of LED.The principle of valley-filled YFC and flyback circuit has been analyzed and discussed.A novel and improved valley-filled YFC circuit is proposed with simulation result.For the application of high lighteness LED,the flyback and current-sensing and feedback circuits more suitable for LED lighting have been further studied.A LED driver has been designed according to the theory and works well and stably for a long time.
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