公开(公告)号：US20110305051A1

公开(公告)日：2011-12-15

申请号：US13095074

申请日：2011-04-27

Applicant: TA-YUNG YANG ,  WEI-HSUAN HUANG ,  RUI-HONG LU

Inventor： TA-YUNG YANG ,  WEI-HSUAN HUANG ,  RUI-HONG LU

IPC: H02M1/00

CPC classification number: H02M1/36

Abstract: A start-up circuit with low standby power loss for power converters according to present invention comprises a first diode and a second diode coupled to an input voltage of the power converter. A start-up resistor is coupled to the join of the first diode and the second diode. A high-voltage switch is coupled to the start-up resistor to generate a power source. A control circuit generates a switching signal for switching a transformer. A detection circuit generates a disable signal in response to the input voltage to disable the switching signal. A winding of the transformer is coupled to the power source to generate the power for the power source. The high-voltage switch is turned off to cut off the start-up resistor for saving the power loss once the voltage of the power source is higher than a threshold.

Abstract translation: 根据本发明的用于功率转换器的具有低备用功率损耗的启动电路包括耦合到功率转换器的输入电压的第一二极管和第二二极管。 启动电阻耦合到第一二极管和第二二极管的连接。 高压开关耦合到启动电阻器以产生电源。 控制电路产生用于切换变压器的开关信号。 检测电路响应于输入电压产生禁止信号以禁用开关信号。 变压器的绕组耦合到电源以产生用于电源的电力。 一旦电源电压高于阈值，高电压开关就关闭，以切断启动电阻，以节省功率损耗。

公开(公告)号：US20100232187A1

公开(公告)日：2010-09-16

申请号：US12720096

申请日：2010-03-09

Applicant: Ta-Yung YANG ,  Wei-Hsuan HUANG ,  Chuh-Ching LI ,  Rui-Hong LU ,  Jenn-Yu G. LIN

Inventor： Ta-Yung YANG ,  Wei-Hsuan HUANG ,  Chuh-Ching LI ,  Rui-Hong LU ,  Jenn-Yu G. LIN

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A control circuit of a power converter for light-load power saving according to the present invention comprises a first feedback circuit coupled to an output voltage of the power converter to receive a first feedback signal. A second feedback circuit is coupled to the output voltage to receive a second feedback signal. A control circuit generates a switching signal for switching a transformer of the power converter and regulating the output voltage of the power converter in response to the first feedback signal and the second feedback signal. The switching signal is generated in accordance with the first feedback signal when an output load is high. The switching signal is generated in accordance with the second feedback signal during a light-load condition.

Abstract translation: 根据本发明的用于轻载省电的功率转换器的控制电路包括耦合到功率转换器的输出电压的第一反馈电路以接收第一反馈信号。 第二反馈电路耦合到输出电压以接收第二反馈信号。 控制电路响应于第一反馈信号和第二反馈信号产生用于切换功率转换器的变压器的开关信号并调节功率转换器的输出电压。 当输出负载高时，根据第一反馈信号产生开关信号。 在轻负载状态期间根据第二反馈信号产生开关信号。

公开(公告)号：US20100090758A1

公开(公告)日：2010-04-15

申请号：US12328202

申请日：2008-12-04

Applicant: Rui-Hong Lu ,  Sheng-Fu Hsu

Inventor： Rui-Hong Lu ,  Sheng-Fu Hsu

IPC: H03H11/04

CPC classification number: H03H11/1291 ,  H02M3/156

Abstract: A low-pass filter of the present invention comprises a plurality of filter units and a regulation unit. The filter units are coupled in series with each other and receive an input signal to filter the input signal for generating an output signal. The regulation unit is coupled to the filter units to regulate voltage levels of the filter units. The low-pass filter of the present invention can be integrated within the integrated circuit and reduce the prime cost.

Abstract translation: 本发明的低通滤波器包括多个滤波器单元和调节单元。 滤波器单元彼此串联耦合并且接收输入信号以对输入信号进行滤波以产生输出信号。 调节单元耦合到滤波器单元以调节滤波器单元的电压电平。 本发明的低通滤波器可以集成在集成电路内并降低主要成本。

公开(公告)号：US20080225560A1

公开(公告)日：2008-09-18

申请号：US11684642

申请日：2007-03-12

Applicant: Ta-yung Yang ,  Rui-Hong Lu ,  Jenn-Yu G. Lin

Inventor： Ta-yung Yang ,  Rui-Hong Lu ,  Jenn-Yu G. Lin

IPC: H02M7/48

CPC classification number: H02J1/102 ,  H02M3/1584 ,  Y10T307/25 ,  Y10T307/406 ,  Y10T307/461 ,  Y10T307/74 ,  Y10T307/747 ,  Y10T307/766 ,  Y10T307/826 ,  Y10T307/865 ,  Y10T307/937

Abstract: A switching controller for parallel power converters is disclosed. The switching controller includes an input circuit coupled to an input terminal of the switching controller to receive an input signal. An integration circuit is coupled to the input circuit to generate an integration signal in response to the pulse width of the input signal. A control circuit generates a switching signal for switching the power converters. The switching signal is enabled in response to the enabling of the input signal. A programmable delay time is generated between the input signal and the switching signal. The pulse width of the switching signal is determined in response to the integration signal.

Abstract translation: 公开了并联电力转换器的开关控制器。 开关控制器包括耦合到开关控制器的输入端以接收输入信号的输入电路。 积分电路耦合到输入电路以响应于输入信号的脉冲宽度产生积分信号。 控制电路产生用于切换功率转换器的开关信号。 响应于输入信号的使能，使能开关信号。 在输入信号和开关信号之间产生可编程延迟时间。 响应于积分信号确定开关信号的脉冲宽度。

公开(公告)号：US07365997B2

公开(公告)日：2008-04-29

申请号：US11357044

申请日：2006-02-21

Applicant: Cheng-Sung Chen ,  Ta-Yung Yang ,  Rui-Hong Lu

Inventor： Cheng-Sung Chen ,  Ta-Yung Yang ,  Rui-Hong Lu

IPC: H02M3/335

CPC classification number: H03L7/00 ,  H02M3/156 ,  H02M3/1563

Abstract: The present invention provides a synchronous switching control circuit for variable switching frequency power converters. It comprises a first circuit to generate a first signal in response to an input synchronous signal of a power converter. A second circuit is coupled to the first circuit to generate a second signal in accordance with the frequency of the first signal. Only when the first signal is operated in a specific frequency range, the synchronous operation is allowed. An oscillation circuit is connected to the first circuit and the second circuit to receive the first signal and the second signal to generate an oscillation signal. The oscillation signal is utilized to enable the switching signal of the power converter. The switching signal is thus synchronized with the input synchronous signal in response to the enable of the second signal. Otherwise, the switching signal will be free running.

Abstract translation: 本发明提供一种用于可变开关频率功率转换器的同步开关控制电路。 它包括响应于功率转换器的输入同步信号产生第一信号的第一电路。 第二电路耦合到第一电路，以根据第一信号的频率产生第二信号。 只有当第一个信号在特定频率范围内工作时，允许同步操作。 振荡电路连接到第一电路和第二电路以接收第一信号和第二信号以产生振荡信号。 振荡信号用于使能功率转换器的开关信号。 因此，响应于第二信号的使能，切换信号与输入同步信号同步。 否则，切换信号将自由运行。

公开(公告)号：US20070121352A1

公开(公告)日：2007-05-31

申请号：US11287268

申请日：2005-11-28

Applicant: Ta-Yung Yang ,  Rui-Hong Lu ,  Chuh-Ching Li ,  Feng-Cheng Tsao ,  Pei-Sheng Tsu

Inventor： Ta-Yung Yang ,  Rui-Hong Lu ,  Chuh-Ching Li ,  Feng-Cheng Tsao ,  Pei-Sheng Tsu

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  Y02B70/1433

Abstract: The present invention provides a switching control circuit having a valley voltage detector to achieve the soft switching and improve the efficiency of a power converter. The switching control circuit includes a control circuit coupled to the feedback signal to generate a switching signal. Through an output circuit, the switching signal drives a switching device for switching a transformer and regulating the output of the power converter. The valley voltage detector is coupled to an auxiliary winding of the transformer for generating a control signal in response to the voltage of the transformer. The control signal is used for enabling the switching signal. The switching signal further turns on the switching device in response to a valley voltage across the switching device.

Abstract translation: 本发明提供一种具有谷值电压检测器的开关控制电路，以实现软开关并提高功率转换器的效率。 开关控制电路包括耦合到反馈信号的控制电路以产生开关信号。 通过输出电路，开关信号驱动用于切换变压器并调节功率转换器的输出的开关装置。 谷值电压检测器耦合到变压器的辅助绕组，以响应于变压器的电压产生控制信号。 控制信号用于启用切换信号。 开关信号进一步响应于开关器件上的谷值电压而导通开关器件。