多路输出高降压恒流LED驱动电源

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Abstract This paper presents a new light-emitting-diode (LED) driver with capacity of high step-down and multiple-output. The operation principle and theoretical analysis of the converter are analyzed in section2 and section3. The theoretical analysis shows that the converter has following characteristics. First,If load balancing,the voltage gain is 1/nof the basic Buck converter,which n is the phase of output. Second,each phase has equal output current automatically,without more control than basic Buck converter. Third,the voltage stress is lower than basic Buck converter. Finally,the validity of the proposed converter is verified through experimental results.

Key words： LED driver high step-down multiple-output lower voltage stress

Received: 24 February 2011 Published: 11 December 2013

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TM46

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	Zhu Binxin
	Luo Quanming
	Wang Yang
	Zhou Luowei

Cite this article:

Zhu Binxin,Luo Quanming,Wang Yang等. High Step-Down Constant Current LED Driver with Multiple-Output[J]. Transactions of China Electrotechnical Society, 2013, 28(7): 178-183.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I7/178

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