公开(公告)号：US08593075B1

公开(公告)日：2013-11-26

申请号：US13174404

申请日：2011-06-30

申请人： John L. Melanson ,  Rahul Singh ,  Siddharth Maru

发明人： John L. Melanson ,  Rahul Singh ,  Siddharth Maru

IPC分类号： H05B37/00

CPC分类号： H05B33/0815 ,  Y02B20/347

摘要： A power distribution system includes a selectable gain value to generate a duty cycle modulated control signal to control current supplied to a load. In at least one embodiment, the power distribution system includes a controller and a switch, and the controller generates the duty cycle modulated control signal to control conductivity of the switch. The duty cycle modulated control signal has a period and a pulse width. In at least one embodiment, the controller determines the period of the control signal as a function of a peak allowable link current value (also referred to as a peak allowable output current value) of a switching power converter, an inductor flyback time of the switching power converter, and the gain value. The link current provides current to a load, such as a lighting system that includes light emitting diodes.

摘要翻译： 配电系统包括可选择的增益值，以产生占空比调制控制信号以控制提供给负载的电流。 在至少一个实施例中，配电系统包括控制器和开关，并且控制器产生占空比调制控制信号以控制开关的电导率。 占空比调制控制信号具有周期和脉冲宽度。 在至少一个实施例中，控制器将控制信号的周期确定为开关功率转换器的峰值允许链路电流值（也称为峰值可允许输出电流值）的函数，开关的电感器反激时间 功率转换器和增益值。 链路电流向负载提供电流，例如包括发光二极管的照明系统。