公开(公告)号：US20160049865A1

公开(公告)日：2016-02-18

申请号：US14809699

申请日：2015-07-27

Applicant: Richtek Technology Corp.

Inventor： Jyun-Che HO ,  Tzu-Chen LIN ,  Isaac Y. CHEN ,  Yi-Wei LEE

IPC: H02M1/36 ,  H02M3/335

CPC classification number: H02M1/36 ,  H02M3/33507 ,  H02M2001/327

Abstract: A fast start-up circuit and a method of a flyback power supply utilize a charging current that is related to an input voltage of the flyback power supply to charge a control terminal of a power switch of the flyback power supply during a start-up mode. Accordingly, the power switch can be switched, and a supply voltage of the flyback power supply rises. When an output terminal of the flyback power supply occurs a short circuit, the fast start-up circuit and the method of the present invention will decrease a maximum of a current through the power switch, thereby avoiding that the power switch is overheating.

Abstract translation: 快速启动电路和回扫电源的方法利用与回扫电源的输入电压相关的充电电流，以在启动模式期间对反激式电源的电源开关的控制端子充电 。 因此，可以切换电源开关，并且回扫电源的电源电压上升。 当回扫电源的输出端子发生短路时，快速启动电路和本发明的方法将减小通过电源开关的电流的最大值，从而避免电源开关过热。

公开(公告)号：US20130229833A1

公开(公告)日：2013-09-05

申请号：US13865524

申请日：2013-04-18

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Liang-Pin TAI ,  Tzu-Chen LIN ,  Cheng-Hsuan FAN

IPC: H02M3/335

CPC classification number: H02M3/33523

Abstract: A feedback circuit for an isolated power converter includes an opto-coupler and a reversed polarity regulator. The opto-coupler provides a current related to an output voltage of the isolated power converter. When the isolated power converter enters light load, the output voltage rises and the reversed polarity regulator reduces the current to decrease the power consumption and thus improve the light load efficiency of the isolated power converter.

Abstract translation: 用于隔离电力转换器的反馈电路包括光耦合器和反极性调节器。 光耦合器提供与隔离功率转换器的输出电压相关的电流。 当隔离电源转换器进入轻负载时，输出电压升高，反极性调节器降低电流以降低功耗，从而提高隔离电源转换器的轻负载效率。

公开(公告)号：US20140192564A1

公开(公告)日：2014-07-10

申请号：US13896631

申请日：2013-05-17

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Chien-Fu TANG ,  Tzu-Chen LIN ,  Isaac Y. CHEN

IPC: H02M7/217

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

Abstract: A switching power converting apparatus is capable of converting an input voltage to an output voltage, and includes a transformer, a primary side control module, and a secondary side control module. The secondary side control module utilizes voltage clamping techniques or current-drawing techniques to stop self-excited conversion from the input voltage to the output voltage when the output voltage is greater than a predetermined target voltage, or utilizes a non-self-excited conversion architecture.

Abstract translation: 开关电力转换装置能够将输入电压转换为输出电压，并且包括变压器，初级侧控制模块和次级侧控制模块。 次级侧控制模块利用电压钳位技术或电流绘制技术在输出电压大于预定目标电压时停止从输入电压到输出电压的自激变换，或利用非自激转换结构 。