公开(公告)号：US08395329B2

公开(公告)日：2013-03-12

申请号：US12868965

申请日：2010-08-26

申请人： Mark Jutras ,  Mark Masera ,  Scott Moore

发明人： Mark Jutras ,  Mark Masera ,  Scott Moore

IPC分类号： G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36 ,  H05B41/16 ,  H05B41/24

CPC分类号： H05B33/083 ,  H05B33/0851

摘要： A power supply for an LED lamp has a set of coupled coils, primary-side power circuitry including a converter power switch for conducting input power, and secondary-side power circuitry including a dimming power switch. Power control circuitry includes converter control circuitry which generates a converter control signal for the converter power switch to maintain a desired undimmed level of lamp current at a normal operating value of a lamp voltage. Dimming control circuitry generates a dimming control signal for the dimming power switch to pulse-width modulate the lamp current at a duty cycle corresponding to a desired dimming. Operation of the converter control circuitry is modified during dimming to prevent an automatic increase of the lamp voltage in response to a decrease in lamp current, avoiding undesirable overshooting of the lamp current and providing more accurate and effective control over dimming operation.

摘要翻译： 用于LED灯的电源具有一组耦合线圈，初级侧电源电路包括用于传导输入功率的转换器电源开关和包括调光功率开关的次级侧电源电路。 功率控制电路包括转换器控制电路，其产生用于转换器功率开关的转换器控制信号，以在灯电压的正常工作值下保持期望的未被限制的灯电流水平。 调光控制电路产生用于调光功率开关的调光控制信号，以对应于期望的调光的占空比脉冲宽度调制灯电流。 在调光期间改变转换器控制电路的操作，以防止灯电压响应于灯电流的减小而自动增加，避免不期望的灯电流过冲，并提供对调光操作的更精确和有效的控制。

公开(公告)号：US20110057573A1

公开(公告)日：2011-03-10

申请号：US12868965

申请日：2010-08-26

申请人： Mark Jutras ,  Mark Masera ,  Scott Moore

发明人： Mark Jutras ,  Mark Masera ,  Scott Moore

IPC分类号： H05B37/02

CPC分类号： H05B33/083 ,  H05B33/0851

摘要： A power supply for an LED lamp has a set of coupled coils, primary-side power circuitry including a converter power switch for conducting input power, and secondary-side power circuitry including a dimming power switch. Power control circuitry includes converter control circuitry which generates a converter control signal for the converter power switch to maintain a desired undimmed level of lamp current at a normal operating value of a lamp voltage. Dimming control circuitry generates a dimming control signal for the dimming power switch to pulse-width modulate the lamp current at a duty cycle corresponding to a desired dimming. Operation of the converter control circuitry is modified during dimming to prevent an automatic increase of the lamp voltage in response to a decrease in lamp current, avoiding undesirable overshooting of the lamp current and providing more accurate and effective control over dimming operation.

摘要翻译： 用于LED灯的电源具有一组耦合线圈，初级侧电源电路包括用于传导输入功率的转换器电源开关，以及包括调光功率开关的次级侧电源电路。 功率控制电路包括转换器控制电路，其产生用于转换器功率开关的转换器控制信号，以在灯电压的正常工作值下保持期望的未被限制的灯电流水平。 调光控制电路产生用于调光功率开关的调光控制信号，以对应于期望的调光的占空比脉冲宽度调制灯电流。 在调光期间改变转换器控制电路的操作，以防止灯电压响应于灯电流的减小而自动增加，避免不期望的灯电流过冲，并提供对调光操作的更精确和有效的控制。