发明授权
US09119238B2 Method and apparatus for LED driving and dimming, and illumination system
有权
LED驱动和调光的方法和装置以及照明系统
- 专利标题： Method and apparatus for LED driving and dimming, and illumination system
- 专利标题（中）： LED驱动和调光的方法和装置以及照明系统
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申请号： US13820160申请日： 2011-08-26
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公开(公告)号： US09119238B2公开(公告)日： 2015-08-25
- 发明人: Yang Hu , LiBo Wu
- 申请人： Yang Hu , LiBo Wu
- 申请人地址： DE Munich
- 专利权人： OSRAM GmbH
- 当前专利权人： OSRAM GmbH
- 当前专利权人地址： DE Munich
- 优先权： CN201010273623 20100903
- 国际申请： PCT/EP2011/064744 WO 20110826
- 国际公布： WO2012/028554 WO 20120308
- 主分类号： H05B41/16
- IPC分类号： H05B41/16 ; H05B37/02 ; H05B33/08
摘要：
A method for driving an LED connected to a power switch is provided. The method includes: determining a duty cycle of a pulse sequence for controlling the power switch according to a present current and a predetermined operating current of the LED; generating the pulse sequence according to the duty cycle and according to at least one of a randomized period sequence and a randomized pulse position sequence; and controlling switching operation of the power switch by the pulse sequence, so as to drive the LED. An apparatus for driving a light emitting diode, an apparatus for dimming a light emitting diode and illumination systems are also provided.
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