公开(公告)号：US20140016378A1

公开(公告)日：2014-01-16

申请号：US13845099

申请日：2013-03-18

Applicant: POWER FOREST TECHNOLOGY CORPORATION

Inventor： Po-Jen Ke ,  Yun-Chi Chiang ,  Tso-Min Chen

IPC: H02H7/12 ,  H02M3/335

CPC classification number: H02H7/1213 ,  H02H7/122 ,  H02M1/32 ,  H02M3/33507 ,  H02M3/33523 ,  H02M2001/0022 ,  H02M2001/327

Abstract: A flyback-based power conversion apparatus and a power conversion method thereof are provided. By switching first and second detection switches disposed in a control chip and coupled to a multi-function pin of the control chip at different timings, the present invention applies a collocation of a voltage-current detection auxiliary circuit and a current detection circuit at a certain timing to execute a detection of the AC input voltage received by a flyback power conversion circuit, and the present invention applies a collocation of the auxiliary voltage-current detection circuit, an over temperature protection unit and an over voltage protection unit at another timing to execute detections of an over temperature protection and an over voltage protection. As the result, a single multi-function detection pin of the control pin is corresponding to a plurality of related function detections, so as to reduce the production cost of manufacturing the control chip.

Abstract translation: 提供了一种基于反激的电力转换装置及其电力转换方法。 通过切换设置在控制芯片中的第一和第二检测开关，并以不同的定时耦合到控制芯片的多功能引脚，本发明将某一电压电流检测辅助电路和电流检测电路的配置 定时执行由反激式电力转换电路接收的交流输入电压的检测，本发明在另一时刻应用辅助电压电流检测电路，过温保护单元和过电压保护单元的搭配来执行 检测过温保护和过压保护。 结果，控制引脚的单个多功能检测引脚对应于多个相关的功能检测，从而降低制造控制芯片的生产成本。

公开(公告)号：US20160043628A1

公开(公告)日：2016-02-11

申请号：US14548290

申请日：2014-11-20

Applicant: Power Forest Technology Corporation

Inventor： Yun-Chi Chiang

IPC: H02M1/32 ,  H02M7/217 ,  H02M1/36

CPC classification number: H02M1/32 ,  H02M1/36 ,  H02M3/156 ,  H02M7/217

Abstract: A power conversion apparatus and a protection method of the power conversion apparatus while a feedback current signal of the power conversion apparatus is abnormal are provided. The protection method includes a step of stopping switching a power switch if a duty cycle of a pulse width modulation signal is continuously greater than a preset duty cycle for at least one signal cycle and a voltage of a current sensing signal is smaller than a preset voltage level during the at least one signal cycle.

Abstract translation: 提供了电力转换装置的反馈电流信号异常时的电力变换装置和电力转换装置的保护方法。 该保护方法包括：如果脉冲宽度调制信号的占空比连续地大于至少一个信号周期的预设占空比并且电流感测信号的电压小于预设电压，则停止切换电源开关的步骤 在至少一个信号周期期间。

公开(公告)号：US09148050B2

公开(公告)日：2015-09-29

申请号：US13941540

申请日：2013-07-14

Applicant: Power Forest Technology Corporation

Inventor： Yun-Chi Chiang

IPC: H02M1/00 ,  H02M1/36 ,  H02M7/217

CPC classification number: H02M1/36 ,  H02M7/217

Abstract: An AC/DC converting circuit and a starting method thereof are provided. An AC detection or a rectified AC voltage detection is disabled when the AC voltage or the rectified AC voltage not up to a start-up voltage is detected, so as to shorten a recovery time of a voltage of a power supply terminal of an AC/DC power conversion controller, and further shorten a starting time of the AC/DC converting circuit.

Abstract translation: 提供一种AC / DC转换电路及其启动方法。 当检测到交流电压或整流的交流电压不达到启动电压时，交流检测或整流的交流电压检测被禁用，以缩短交流/交流电压的电源端的电压的恢复时间， DC电源转换控制器，进一步缩短AC / DC转换电路的启动时间。

公开(公告)号：US09077176B2

公开(公告)日：2015-07-07

申请号：US13845099

申请日：2013-03-18

Applicant: Power Forest Technology Corporation

Inventor： Po-Jen Ke ,  Yun-Chi Chiang ,  Tso-Min Chen

IPC: H02M3/335 ,  H02H7/12 ,  H02M1/32 ,  H02H7/122 ,  H02M1/00

CPC classification number: H02H7/1213 ,  H02H7/122 ,  H02M1/32 ,  H02M3/33507 ,  H02M3/33523 ,  H02M2001/0022 ,  H02M2001/327

Abstract: A flyback-based power conversion apparatus and a power conversion method thereof are provided. By switching first and second detection switches disposed in a control chip and coupled to a multi-function pin of the control chip at different timings, the present invention applies a collocation of a voltage-current detection auxiliary circuit and a current detection circuit at a certain timing to execute a detection of the AC input voltage received by a flyback power conversion circuit, and the present invention applies a collocation of the auxiliary voltage-current detection circuit, an over temperature protection unit and an over voltage protection unit at another timing to execute detections of an over temperature protection and an over voltage protection. As the result, a single multi-function detection pin of the control pin is corresponding to a plurality of related function detections, so as to reduce the production cost of manufacturing the control chip.

Abstract translation: 提供了一种基于反激的电力转换装置及其电力转换方法。 通过切换设置在控制芯片中的第一和第二检测开关，并以不同的定时耦合到控制芯片的多功能引脚，本发明将某一电压电流检测辅助电路和电流检测电路的配置 定时执行由反激式电力转换电路接收的交流输入电压的检测，本发明在另一时刻应用辅助电压电流检测电路，过温保护单元和过电压保护单元的搭配来执行 检测过温保护和过压保护。 结果，控制引脚的单个多功能检测引脚对应于多个相关的功能检测，从而降低制造控制芯片的生产成本。

公开(公告)号：US20140268935A1

公开(公告)日：2014-09-18

申请号：US13941540

申请日：2013-07-14

Applicant: Power Forest Technology Corporation

Inventor： Yun-Chi Chiang

IPC: H02M1/36

CPC classification number: H02M1/36 ,  H02M7/217

Abstract: An AC/DC converting circuit and a starting method thereof are provided. An AC detection or a rectified AC voltage detection is disabled when the AC voltage or the rectified AC voltage not up to a start-up voltage is detected, so as to shorten a recovery time of a voltage of a power supply terminal of an AC/DC power conversion controller, and further shorten a starting time of the AC/DC converting circuit.

Abstract translation: 提供一种AC / DC转换电路及其启动方法。 当检测到交流电压或整流的交流电压不达到启动电压时，禁止交流检测或整流的交流电压检测，以缩短交流/交流电压的电源端的电压的恢复时间， DC电源转换控制器，进一步缩短AC / DC转换电路的启动时间。

公开(公告)号：US09729043B2

公开(公告)日：2017-08-08

申请号：US14548290

申请日：2014-11-20

Applicant: Power Forest Technology Corporation

Inventor： Yun-Chi Chiang

IPC: H02M3/156 ,  H02M1/32 ,  H02M1/36 ,  H02M7/217

CPC classification number: H02M1/32 ,  H02M1/36 ,  H02M3/156 ,  H02M7/217

Abstract: A power conversion apparatus and a protection method of the power conversion apparatus while a feedback current signal of the power conversion apparatus is abnormal are provided. The protection method includes a step of stopping switching a power switch if a duty cycle of a pulse width modulation signal is continuously greater than a preset duty cycle for at least one signal cycle and a voltage of a current sensing signal is smaller than a preset voltage level during the at least one signal cycle.