公开(公告)号：US09385598B2

公开(公告)日：2016-07-05

申请号：US14303068

申请日：2014-06-12

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Kan Wang ,  Michael A. Kost ,  Eric J. King ,  John L. Melanson ,  James P. McFarland

IPC分类号： H02M3/156 ,  H05B33/08

CPC分类号： H02M3/156 ,  H05B33/0815 ,  Y02B20/346

摘要： A low voltage lamp includes a boost converter stage and a load. The load may include low voltage light producing elements including low voltage light emitting diodes. The boost converter stage receives an electronic transformer output and includes an inductor coupled to a switch and a switch controller that receives one or more controller inputs. Inductor current may be returned to the transformer when the switch is closed and provided to a rectifier coupled to the load when the switch is open. Controller inputs may include a transformer input that receives the transformer output, a sense input indicating switch current, and a load input indicating load voltage. Controller logic may synchronize assertions of a control signal for the switch with edge transitions of the transformer output to maintain peak inductor current within a specified range and to selectively transfer stored energy in the inductor to the load or back to the transformer.

摘要翻译： 低压灯包括升压转换器级和负载。 负载可以包括低电压发光元件，包括低电压发光二极管。 升压转换器级接收电子变压器输出并且包括耦合到开关的电感器和接收一个或多个控制器输入的开关控制器。 当开关关闭时，电感电流可以返回到变压器，当开关打开时，电感电流提供给耦合到负载的整流器。 控制器输入可以包括接收变压器输出的变压器输入，指示开关电流的感测输入和指示负载电压的负载输入。 控制器逻辑可以使开关的控制信号的断言与变压器输出的边沿跃迁同步，以将峰值电感器电流保持在指定范围内，并有选择地将存储在电感器中的能量转移到负载或返回到变压器。