公开(公告)号：US20110317454A1

公开(公告)日：2011-12-29

申请号：US13099595

申请日：2011-05-03

Applicant: CHAO-CHIH LIN ,  TA-YUNG YANG ,  YING-CHIEH SU

Inventor： CHAO-CHIH LIN ,  TA-YUNG YANG ,  YING-CHIEH SU

IPC: H02M3/335

CPC classification number: H02M3/3353

Abstract: A dual switches Flyback power converter with a wide input voltage range according to the present invention comprises an input diode and an energy-store capacitor. The input diode can prevent the reflected voltage from the power transformer of the power converter to charge the electrolytic capacitor of the power converter. The energy-store capacitor will store the reflected voltage and the energy of the leakage inductor of the power transformer. The energy stored in the energy-store capacitor will be recycled to the output voltage of the power converter. Further, the input diode can be replaced by an input transistor to prevent the reflected voltage from the power transformer to charge the electrolytic capacitor.

Abstract translation: 根据本发明的具有宽输入电压范围的双重开关反激式功率转换器包括输入二极管和能量存储电容器。 输入二极管可以防止功率转换器的电源变压器的反射电压对功率转换器的电解电容器充电。 储能电容将存储电力变压器的漏电感的反射电压和能量。 存储在储能电容器中的能量将被再循环到功率转换器的输出电压。 此外，输入二极管可以由输入晶体管代替，以防止来自电力变压器的反射电压对电解电容器充电。

公开(公告)号：US20110305048A1

公开(公告)日：2011-12-15

申请号：US13086588

申请日：2011-04-14

Applicant: TA-YUNG YANG ,  YING-CHIEH SU ,  CHAO-CHIH LIN

Inventor： TA-YUNG YANG ,  YING-CHIEH SU ,  CHAO-CHIH LIN

IPC: H02M3/335

CPC classification number: H02M1/083 ,  H02M3/33507 ,  H02M2001/0006 ,  H02M2001/342 ,  Y02B70/1433 ,  Y02B70/1491

Abstract: An active clamp circuit for a QR flyback power converter according to the present invention comprises an active-clamper connected to a primary winding of a power transformer of the QR flyback power converter in parallel. A high-side transistor driver is coupled to drive the active-damper. A charge-pump circuit is coupled to the high-side transistor driver to provide a power supply to the high-side transistor driver in accordance with a voltage source. A control circuit generates a control signal coupled to control the high-side transistor driver. The control signal is generated in response to a PWM signal and an input voltage of the QR flyback power converter.

Abstract translation: 根据本发明的用于QR反激式功率转换器的有源钳位电路包括并联连接到QR反激式功率转换器的电力变压器的初级绕组的有源钳位器。 高侧晶体管驱动器被耦合以驱动主动阻尼器。 电荷泵电路耦合到高侧晶体管驱动器，以根据电压源向高侧晶体管驱动器提供电源。 控制电路产生耦合以控制高侧晶体管驱动器的控制信号。 响应于PWM信号和QR反激式功率转换器的输入电压产生控制信号。

公开(公告)号：US09007786B2

公开(公告)日：2015-04-14

申请号：US13348963

申请日：2012-01-12

Applicant: Ta-Yung Yang ,  Li Lin ,  Chao-Chih Lin

Inventor： Ta-Yung Yang ,  Li Lin ,  Chao-Chih Lin

IPC: H02M3/335 ,  H02M1/00

CPC classification number: H02M3/33507 ,  H02M2001/0022

Abstract: The present invention proposes a switching controller of a flyback power converter. The switching controller includes a switching circuit, a sample-and-hold circuit, a voltage detection circuit, an oscillation circuit, and a comparator. The voltage detection circuit generates a holding signal when a level of an input voltage of the flyback power converter is lower than a low-threshold. The oscillation circuit limits the maximum frequency of switching signal. The maximum frequency is increased in response to a decrement of a modulation signal. The modulation signal correlated with a level of the input voltage is used to generate a control signal when the level of the input voltage is lower than an ultra-low-threshold. The control signal is enabled to operate the flyback power converter in continuous current mode operation. Therefore, an input capacitor can be eliminated and manufacturing cost is saved.

Abstract translation: 本发明提出了一种反激式功率转换器的开关控制器。 开关控制器包括开关电路，采样保持电路，电压检测电路，振荡电路和比较器。 当反激式功率转换器的输入电压的电平低于低阈值时，电压检测电路产生保持信号。 振荡电路限制开关信号的最大频率。 响应于调制信号的减少，最大频率增加。 当输入电压的电平低于超低阈值时，与输入电压的电平相关的调制信号用于产生控制信号。 控制信号使能在连续电流模式下操作反激式功率转换器。 因此，可以消除输入电容器并节省制造成本。

公开(公告)号：US08767417B2

公开(公告)日：2014-07-01

申请号：US13099595

申请日：2011-05-03

Applicant: Chao-Chih Lin ,  Ta-Yung Yang ,  Ying-Chieh Su

Inventor： Chao-Chih Lin ,  Ta-Yung Yang ,  Ying-Chieh Su

IPC: H02M3/335

CPC classification number: H02M3/3353

Abstract: A dual switches Flyback power converter with a wide input voltage range according to the present invention comprises an input diode and an energy-storage capacitor. The input diode can prevent the reflected voltage from the power transformer of the power converter to charge the electrolytic capacitor of the power converter. The energy-storage capacitor will store the reflected voltage and the energy of the leakage inductor of the power transformer. The energy stored in the energy-storage capacitor will be recycled to the output voltage of the power converter. Further, the input diode can be replaced by an input transistor to prevent the reflected voltage from the power transformer to charge the electrolytic capacitor.

Abstract translation: 根据本发明的具有宽输入电压范围的双重开关反激式功率转换器包括输入二极管和储能电容器。 输入二极管可以防止功率转换器的电源变压器的反射电压对功率转换器的电解电容器充电。 储能电容器将存储电力变压器的反射电压和漏电感器的能量。 存储在储能电容器中的能量将被再循环到功率转换器的输出电压。 此外，输入二极管可以由输入晶体管代替，以防止来自电力变压器的反射电压对电解电容器充电。

公开(公告)号：US08503144B2

公开(公告)日：2013-08-06

申请号：US12338112

申请日：2008-12-18

Applicant: Meng-Jen Tsai ,  Chao-Chih Lin ,  Rui-Hong Lu ,  Chiu-Chih Chiang

Inventor： Meng-Jen Tsai ,  Chao-Chih Lin ,  Rui-Hong Lu ,  Chiu-Chih Chiang

IPC: H02H3/20

CPC classification number: H02H7/1213 ,  H02M1/32 ,  H02M3/33507

Abstract: A control circuit with protection circuit for power supply according to the present invention comprises a peak-detection circuit and a protection circuit. The peak-detection circuit detects an AC input voltage and generates a peak-detection signal. The protection circuit generates a reset signal to reduce the output of the power supply in response to the peak-detection signal. The present invention can protect the power supply in response to the AC input voltage effectively through the peak-detection circuit.

Abstract translation: 根据本发明的具有电源保护电路的控制电路包括峰值检测电路和保护电路。 峰值检测电路检测交流输入电压并产生峰值检测信号。 保护电路产生复位信号，以响应峰值检测信号减小电源的输出。 本发明可以通过峰值检测电路有效地响应于AC输入电压来保护电源。

公开(公告)号：US20120230064A1

公开(公告)日：2012-09-13

申请号：US13293276

申请日：2011-11-10

Applicant: Ta-Yung YANG ,  Chao-Chih Lin

Inventor： Ta-Yung YANG ,  Chao-Chih Lin

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M2001/0035 ,  Y02B70/1433 ,  Y02B70/16

Abstract: The present invention provides a controller for a power converter. The controller comprises a PWM circuit, a detection circuit, a signal generator, an oscillation circuit, a valley-lock circuit, a timing circuit and a burst circuit. The PWM circuit generates a switching signal coupled to switch a transformer of the power converter. A feedback signal is coupled to control and disable the switching signal. The detection circuit is coupled to the transformer via a resistor for generating a valley signal in response to a waveform obtained from the transformer. The signal generator is coupled to receive the feedback signal and the valley signal for generating an enabling signal. The oscillation circuit generates a maximum frequency signal. The maximum frequency signal associates with the enabling signal to generate a turning-on signal. The turning-on signal is coupled to enable the switching signal. A maximum frequency of the turning-on signal is limited.

Abstract translation: 本发明提供了一种用于功率转换器的控制器。 控制器包括PWM电路，检测电路，信号发生器，振荡电路，谷底锁定电路，定时电路和突发电路。 PWM电路产生耦合以切换功率转换器的变压器的开关信号。 耦合反馈信号以控制和禁用开关信号。 检测电路经由电阻器耦合到变压器，用于响应于从变压器获得的波形来产生谷值信号。 信号发生器被耦合以接收反馈信号和谷值信号以产生使能信号。 振荡电路产生最大频率信号。 最大频率信号与使能信号相关联以产生导通信号。 接通信号被耦合以使能开关信号。 导通信号的最大频率受到限制。

公开(公告)号：US09142952B2

公开(公告)日：2015-09-22

申请号：US13293296

申请日：2011-11-10

Applicant: Ta-Yung Yang ,  Chao-Chih Lin

Inventor： Ta-Yung Yang ,  Chao-Chih Lin

IPC: G05F1/00 ,  H02H5/04 ,  H02M3/156 ,  H02M1/32 ,  H02M3/158

CPC classification number: H02H5/042 ,  G05F1/00 ,  H02M3/156 ,  H02M3/158 ,  H02M2001/327

Abstract: The present invention provides a control circuit having a multi-function terminal. The control circuit comprises a switching circuit, a sample-and-hold circuit, a detection circuit, and a comparator. The sample-and-hold circuit is coupled to the multi-function terminal for generating a sample voltage by sampling the feedback signal during a first period. The detection circuit is coupled to the multi-function terminal during a second period for generating a detection voltage. The comparator compares the detection voltage and the sample voltage for generating an over-temperature signal, wherein the over-temperature signal is couple to disable the switching signal.

Abstract translation: 本发明提供一种具有多功能端子的控制电路。 控制电路包括开关电路，采样保持电路，检测电路和比较器。 采样和保持电路耦合到多功能端子，用于通过在第一周期期间对反馈信号进行采样来产生采样电压。 在用于产生检测电压的第二周期期间，检测电路耦合到多功能终端。 比较器比较检测电压和采样电压以产生过温度信号，其中过温信号耦合以禁用开关信号。

公开(公告)号：US08730687B2

公开(公告)日：2014-05-20

申请号：US13293276

申请日：2011-11-10

Applicant: Ta-Yung Yang ,  Chao-Chih Lin

Inventor： Ta-Yung Yang ,  Chao-Chih Lin

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M2001/0035 ,  Y02B70/1433 ,  Y02B70/16

Abstract: The present invention provides a controller for a power converter. The controller comprises a PWM circuit, a detection circuit, a signal generator, an oscillation circuit, a valley-lock circuit, a timing circuit and a burst circuit. The PWM circuit generates a switching signal coupled to switch a transformer of the power converter. A feedback signal is coupled to control and disable the switching signal. The detection circuit is coupled to the transformer via a resistor for generating a valley signal in response to a waveform obtained from the transformer. The signal generator is coupled to receive the feedback signal and the valley signal for generating an enabling signal. The oscillation circuit generates a maximum frequency signal. The maximum frequency signal associates with the enabling signal to generate a turning-on signal. The turning-on signal is coupled to enable the switching signal. A maximum frequency of the turning-on signal is limited.

Abstract translation: 本发明提供了一种用于功率转换器的控制器。 控制器包括PWM电路，检测电路，信号发生器，振荡电路，谷底锁定电路，定时电路和突发电路。 PWM电路产生耦合以切换功率转换器的变压器的开关信号。 耦合反馈信号以控制和禁用开关信号。 检测电路经由电阻器耦合到变压器，用于响应于从变压器获得的波形来产生谷值信号。 信号发生器被耦合以接收反馈信号和谷值信号以产生使能信号。 振荡电路产生最大频率信号。 最大频率信号与使能信号相关联以产生导通信号。 接通信号被耦合以使能开关信号。 导通信号的最大频率受到限制。

公开(公告)号：US08482937B2

公开(公告)日：2013-07-09

申请号：US12962948

申请日：2010-12-08

Applicant: Chao-Chih Lin ,  Ying-Chieh Su ,  Jhih-Da Hsu ,  Chia-Yo Yeh ,  Wei-Ting Wang

Inventor： Chao-Chih Lin ,  Ying-Chieh Su ,  Jhih-Da Hsu ,  Chia-Yo Yeh ,  Wei-Ting Wang

IPC: H02M3/335

CPC classification number: H02M1/44 ,  H02M3/33523 ,  H02M2001/0048 ,  Y02B70/1491

Abstract: A switching control circuit for a switching power converter is provided. The switching control circuit is coupled to a switching device and an auxiliary winding of a transformer. The switching control circuit includes a valley detecting circuit, a valley lock circuit, and a PWM circuit. The valley detecting circuit is coupled to receive a reflected voltage signal from the auxiliary winding of the transformer for outputting a control signal in response to the reflected voltage signal. The valley lock circuit is coupled to receive the control signal for outputting a judging signal in response to the control signal during a first period and a second period following the first period. The PWM circuit outputs a switching signal in response to the judging signal.

Abstract translation: 提供了一种用于开关电源转换器的开关控制电路。 开关控制电路耦合到变压器的开关装置和辅助绕组。 开关控制电路包括谷值检测电路，谷值锁定电路和PWM电路。 谷检测电路被耦合以接收来自变压器的辅助绕组的反射电压信号，以响应于反射电压信号输出控制信号。 谷锁电路被耦合以接收控制信号，用于在第一周期和第一周期之后的第一周期期间响应于控制信号输出判断信号。 PWM电路响应判断信号输出开关信号。

公开(公告)号：US20120206117A1

公开(公告)日：2012-08-16

申请号：US13293296

申请日：2011-11-10

Applicant: Ta-Yung YANG ,  Chao-Chih Lin

Inventor： Ta-Yung YANG ,  Chao-Chih Lin

IPC: G05F1/00

CPC classification number: H02H5/042 ,  G05F1/00 ,  H02M3/156 ,  H02M3/158 ,  H02M2001/327

Abstract: The present invention provides a control circuit having a multi-function terminal. The control circuit comprises a switching circuit, a sample-and-hold circuit, a detection circuit, and a comparator. The sample-and-hold circuit is coupled to the multi-function terminal for generating a sample voltage by sampling the feedback signal during a first period. The detection circuit is coupled to the multi-function terminal during a second period for generating a detection voltage. The comparator compares the detection voltage and the sample voltage for generating an over-temperature signal, wherein the over-temperature signal is couple to disable the switching signal.

Abstract translation: 本发明提供一种具有多功能端子的控制电路。 控制电路包括开关电路，采样保持电路，检测电路和比较器。 采样和保持电路耦合到多功能端子，用于通过在第一周期期间对反馈信号进行采样来产生采样电压。 在用于产生检测电压的第二周期期间，检测电路耦合到多功能终端。 比较器比较检测电压和采样电压以产生过温度信号，其中过温信号耦合以禁用开关信号。