公开(公告)号：US20100039037A1

公开(公告)日：2010-02-18

申请号：US12537761

申请日：2009-08-07

申请人： Mitsuru YAMANE ,  Yoshiki OYAMA

发明人： Mitsuru YAMANE ,  Yoshiki OYAMA

IPC分类号： H05B37/02

CPC分类号： H05B33/0815

摘要： A light emitting diode driving apparatus includes: a switching converter having an inductor and a switching device; a plurality of serial light emitting diode lines each having a plurality of light emitting diodes connected in series; a plurality of rectifier diodes respectively connected in series to the plurality of serial light emitting diode lines; a plurality of capacitors respectively connected to nodes between the serial light emitting diode lines and the rectifier diodes for smoothing a voltage; and one or more current distribution coils disposed between the switching converter and the plurality of serial light emitting diode lines to let a current flow in a direction of canceling out a magnetic flux generated by a first winding and a magnetic flux generated by a second winding each other, thereby making currents flowing in the serial light emitting diode lines equal to each other.

摘要翻译： 一种发光二极管驱动装置，包括：具有电感器和开关装置的开关转换器; 多个串联发光二极管管线，每个串联发光二极管线路具有串联连接的多个发光二极管; 分别与多个串联发光二极管线串联连接的多个整流二极管; 分别连接到串联发光二极管线和整流二极管之间的节点的多个电容器，用于平滑电压; 以及设置在开关转换器和多个串联发光二极管线路之间的一个或多个电流分配线圈，以使电流沿消除由第一绕组产生的磁通和由第二绕组产生的磁通的方向流动 从而使在串联发光二极管线中流动的电流彼此相等。