PWM based LED linear dimming circuit

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题名:	PWM based LED linear dimming circuit
作者:	Kaiwei, Chang
贡献者:	Department of Photonics and Communication Engineering Chen Yungchin
关键词:	PWM;LED Driver;Current Regulator
日期:	2012
上传时间:	2012-11-18 08:21:49 (UTC+0)
出版者:	Asia University
摘要:	This paper presents an optimal design of dimmable light-emitting diode (LED) driver with adaptive feedback control in terms of lighting efficiency. A simple and low cost pulse width modulation dimming technique is studied for regulating the LED current and brightness. Under universal input voltage operation, high efficiency still can be achieved with a simple commercial transition-mode PFC controller. The operation principles and design considerations of the studied LED driver are analyzed and discussed. based on simulation results.
显示于类别:	[光電與通訊學系] 博碩士論文

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