公开(公告)号：WO2016044489A1

公开(公告)日：2016-03-24

申请号：PCT/US2015/050528

申请日：2015-09-16

Applicant: ALPHA AND OMEGA SEMICONDUCTOR (CAYMAN) LTD.

Inventor： LIN, Tien-chi ,  LIU, Chih-Yuan ,  YU, Yueh-Ping ,  CHENG, Jung-Pei ,  HUANG, Pei-Lun

IPC: H02M1/10 ,  H02M3/335 ,  H02M7/155 ,  H02M7/21 ,  G05F1/565

CPC classification number: H02M3/33507 ,  H02M1/36 ,  H02M3/33523 ,  H02M3/33592 ,  Y02B70/1475 ,  Y02B70/1491

Abstract: The present invention discloses a constant on-time isolated converter comprising a transformer with a primary side and a secondary side. The primary side is connected to an electronic switch and secondary-side is connected to a load and a processor. The processor is connected to a driver on primary side through at least one coupling element and to the electronic switch. The processor receives an output voltage or an output current across the load generating a control signal accordingly. The driver receives the control signal through the coupling element and accordingly changes the ON/OFF state of the electronic switch, regulating the output voltage and the output current via the transformer, where the duration of the ON/OFF state of the electronic switch is determined between the moment control signal changes from negative to positive and the moment it changes from positive to negative to achieve a high-speed load transient response.

Abstract translation: 本发明公开了一种具有初级侧和次级侧的变压器的恒定导通时间隔离变换器。 初级侧连接到电子开关，次级侧连接到负载和处理器。 处理器通过至少一个耦合元件和电子开关连接到初级侧的驱动器。 处理器接收负载的输出电压或输出电流，从而产生相应的控制信号。 驱动器通过耦合元件接收控制信号，从而改变电子开关的ON / OFF状态，通过变压器调节输出电压和输出电流，确定电子开关的ON / OFF状态 瞬间控制信号从负变为正，瞬间从正变为负，达到高速负载瞬态响应。