公开(公告)号：US20150173144A1

公开(公告)日：2015-06-18

申请号：US14553777

申请日：2014-11-25

Applicant: NXP B.V.

Inventor： Leendert van den Broeke ,  Robert de Nie

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0809 ,  H05B33/0845 ,  Y02B20/346

Abstract: In an example embodiment, a controller generates a switch signal for controlling a switch to convert an input signal from a phase cut dimmer into a driving signal for a solid state lighting element. The controller determines a conduction period of the input signal from the phase cut dimmer within a half cycle period of the input signal, determines a burst period within the conduction period is a period of time less than the conduction period, and generates a switch signal comprising a plurality of switching cycles over the burst period. The switch signal has first and second subsets of switching cycles. The controller controls the switching cycles of the second subset such that the average energy transferred per switching cycle to the driving signal is less than the average energy transferred per switching cycle to the driving signal for the switching cycles of the first subset.

Abstract translation: 在示例性实施例中，控制器产生用于控制开关以将来自相位切割调光器的输入信号转换为用于固态照明元件的驱动信号的开关信号。 控制器在输入信号的半周期内确定来自相位切割调光器的输入信号的导通周期，确定导通周期内的脉冲串周期是小于导通周期的时间段，并且产生包括 在突发周期内的多个开关周期。 开关信号具有开关周期的第一和第二子集。 控制器控制第二子集的开关周期，使得每个开关周期传递到驱动信号的平均能量小于每个开关周期传递到第一子集的开关周期的驱动信号的平均能量。