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1.发明公开LED DIMMING CONTROL TECHNIQUE FOR INCREASING THE MAXIMUM PWM DIMMING RATIO AND AVOIDING LED FLICKER 有权LED调光器控制方法放大最大PWM调光率，并且防止LED闪烁
公开(公告)号：EP1994799A1
公开(公告)日：2008-11-26
申请号：EP06802861.2
申请日：2006-09-01
发明人： MAROSEK, Mark, W.
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , Y02B20/346 , Y10S315/04
摘要： Circuitry and methodology for providing LED dimming control in a LED driving system having a switching regulator for providing power supply to drive the LED. The switching regulator includes a switching circuit to which an oscillation signal is applied to control switching of the switching circuit. A dimming control input is supplied with a pulse-width modulation (PWM) dimming control signal to provide PWM dimming control of the LED. The dimming control input applies the PWM dimming control signal to control switching of the switching circuit. A synchronizing circuit is provided for synchronizing the oscillation signal to the PWM dimming control signal.
摘要翻译： 电路和方法用于在具有用于提供电源来驱动LED的开关调节器中的LED驱动系统中提供LED调光控制。 开关调节器包括开关电路，以振荡信号的施加到控制开关电路的切换。 调光控制输入提供与调光控制信号，以提供所述LED的PWM调光控制的脉冲宽度调制（PWM）。 调光控制输入应用于所述PWM调光控制信号来控制开关电路的切换。 一个同步电路被提供用于将振荡信号同步到PWM调光控制信号。
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2.发明授权
公开(公告)号：EP1994799B1
公开(公告)日：2018-05-30
申请号：EP06802861.2
申请日：2006-09-01
发明人： MAROSEK, Mark, W.
IPC分类号： H05B33/08
CPC分类号： H05B33/0815 , Y02B20/346 , Y10S315/04
摘要： Circuitry and methodology for providing LED dimming control in a LED driving system having a switching regulator for providing power supply to drive the LED. The switching regulator includes a switching circuit to which an oscillation signal is applied to control switching of the switching circuit. A dimming control input is supplied with a pulse-width modulation (PWM) dimming control signal to provide PWM dimming control of the LED. The dimming control input applies the PWM dimming control signal to control switching of the switching circuit. A synchronizing circuit is provided for synchronizing the oscillation signal to the PWM dimming control signal.
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