公开(公告)号：WO2014101767A1

公开(公告)日：2014-07-03

申请号：PCT/CN2013/090429

申请日：2013-12-25

Applicant: SHENZHEN BYD AUTO R&D COMPANY LIMITED ,  BYD COMPANY LIMITED

Inventor： HU, Chuhua ,  JIANG, Xingfu ,  YANG, Xiaohua

IPC: H05B37/02

CPC classification number: H02M3/33507 ,  H05B33/0815 ,  Y02B20/347

Abstract: A switching power source, a method and a control chip for controlling a switching power source are provided. The switching power source includes: a dimmer having a plurality of operating modes; a filtering and rectifying module connected with the dimmer; a dimmer switching module connected with the dimmer; a primary constant current circuit connected with the filtering and rectifying module; a control module connected with the filtering and rectifying module, the dimmer switching module and the primary constant current circuit respectively, and configured to detect a current operating mode of the dimmer, to generate a dimmer control signal according to the current operating mode, to control the dimmer switching module to turn on or off according to the dimmer control signal so as to control the dimmer to enter a desired operating mode, and to control the primary constant current circuit to output a constant current.

Abstract translation: 提供了用于控制开关电源的开关电源，方法和控制芯片。 开关电源包括：具有多个工作模式的调光器; 与调光器连接的滤波整流模块; 与调光器连接的调光开关模块; 与过滤整流模块连接的主要恒流电路; 与滤波整流模块，调光器开关模块和初级恒流电路分别连接的控制模块，被配置为检测调光器的当前工作模式，根据当前工作模式产生调光控制信号，以控制 调光开关模块根据调光控制信号导通或关断，以控制调光器进入所需的工作模式，并控制主恒流电路输出恒定电流。