公开(公告)号：US08358518B2

公开(公告)日：2013-01-22

申请号：US12748548

申请日：2010-03-29

申请人： Ta-Yung Yang ,  Shao-Chun Huang ,  Chen-Hui Chan ,  Jenn-Yu G. Lin

发明人： Ta-Yung Yang ,  Shao-Chun Huang ,  Chen-Hui Chan ,  Jenn-Yu G. Lin

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M3/156 ,  H02M3/157

摘要： A switching regulator of a power converter is provided and includes a feedback-input circuit, a programming circuit, and a peak-current-threshold circuit. The feedback-input circuit is coupled to a terminal of the switching regulator for receiving a feedback signal. The feedback-input circuit is operated in a first range of a terminal signal. The programming circuit is coupled to the terminal for generating a programming signal. The programming signal is operated in a second range of the feedback signal. The peak-current-threshold circuit generates a threshold signal in accordance with the programming signal. The feedback signal is coupled to regulate the output of the power converter, and the threshold signal is coupled to limit a peak switching current of the power converter.

摘要翻译： 提供了功率转换器的开关调节器，并且包括反馈输入电路，编程电路和峰值电流阈值电路。 反馈输入电路耦合到开关稳压器的端子，用于接收反馈信号。 反馈输入电路在终端信号的第一范围内工作。 编程电路耦合到终端以产生编程信号。 编程信号在反馈信号的第二范围内工作。 峰值电流阈值电路根据编程信号产生阈值信号。 耦合反馈信号以调节功率转换器的输出，并且阈值信号被耦合以限制功率转换器的峰值切换电流。

公开(公告)号：US07911813B2

公开(公告)日：2011-03-22

申请号：US12176427

申请日：2008-07-21

申请人： Ta-yung Yang ,  Chen-Hui Chan ,  Chou-Sheng Wang ,  Shih-Hung Hsieh

发明人： Ta-yung Yang ,  Chen-Hui Chan ,  Chou-Sheng Wang ,  Shih-Hung Hsieh

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  H02M2001/0009 ,  Y02B70/1433 ,  Y02B70/1475

摘要： A synchronous rectifying circuit of a resonant switching power converter is provided to improve the efficiency. The synchronous rectifying circuit includes a power transistor and a diode connected to a transformer and an output ground of the power converter for rectifying. A sense transistor is coupled to the power transistor for generating a mirror current correlated to a current of the power transistor. A controller generates a driving signal to control the power transistor in response to a switching-current signal. A current-sense device is coupled to the sense transistor for generating the switching-current signal in response to the mirror current. The controller enables the driving signal to turn on the power transistor once the diode is forwardly biased. The controller generates a reset signal to disable the driving signal and turn off the power transistor once the switching-current signal is lower than a threshold.

摘要翻译： 提供谐振开关电源转换器的同步整流电路以提高效率。 同步整流电路包括功率晶体管和连接到变压器的二极管和用于整流的功率转换器的输出地。 感测晶体管耦合到功率晶体管，用于产生与功率晶体管的电流相关的反射镜电流。 控制器响应于开关电流信号产生驱动信号以控制功率晶体管。 电流感测装置耦合到感测晶体管，用于响应于反射镜电流产生开关电流信号。 一旦二极管向前偏置，控制器使驱动信号接通功率晶体管。 一旦开关电流信号低于阈值，控制器产生复位信号来禁止驱动信号并关断功率晶体管。

公开(公告)号：US20110038183A1

公开(公告)日：2011-02-17

申请号：US12748548

申请日：2010-03-29

申请人： Ta-Yung Yang ,  Shao-Chun Huang ,  Chen-Hui Chan ,  Jenn-Yu G. Lin

发明人： Ta-Yung Yang ,  Shao-Chun Huang ,  Chen-Hui Chan ,  Jenn-Yu G. Lin

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M3/156 ,  H02M3/157

摘要： A switching regulator of a power converter is provided and includes a feedback-input circuit, a programming circuit, and a peak-current-threshold circuit. The feedback-input circuit is coupled to a terminal of the switching regulator for receiving a feedback signal. The feedback-input circuit is operated in a first range of a terminal signal. The programming circuit is coupled to the terminal for generating a programming signal. The programming signal is operated in a second range of the feedback signal. The peak-current-threshold circuit generates a threshold signal in accordance with the programming signal. The feedback signal is coupled to regulate the output of the power converter, and the threshold signal is coupled to limit a peak switching current of the power converter.

摘要翻译： 提供了功率转换器的开关稳压器，并且包括反馈输入电路，编程电路和峰值电流阈值电路。 反馈输入电路耦合到开关稳压器的端子，用于接收反馈信号。 反馈输入电路在终端信号的第一范围内工作。 编程电路耦合到终端以产生编程信号。 编程信号在反馈信号的第二范围内工作。 峰值电流阈值电路根据编程信号产生阈值信号。 耦合反馈信号以调节功率转换器的输出，并且阈值信号被耦合以限制功率转换器的峰值切换电流。

公开(公告)号：US20100014324A1

公开(公告)日：2010-01-21

申请号：US12176427

申请日：2008-07-21

申请人： Ta-Yung Yang ,  Chen-Hui Chan ,  Chou-Sheng Wang ,  Shih-Hung Hsieh

发明人： Ta-Yung Yang ,  Chen-Hui Chan ,  Chou-Sheng Wang ,  Shih-Hung Hsieh

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  H02M2001/0009 ,  Y02B70/1433 ,  Y02B70/1475

摘要： A synchronous rectifying circuit of a resonant switching power converter is provided to improve the efficiency. The synchronous rectifying circuit includes a power transistor and a diode connected to a transformer and an output ground of the power converter for rectifying. A sense transistor is coupled to the power transistor for generating a mirror current correlated to a current of the power transistor. A controller generates a driving signal to control the power transistor in response to a switching-current signal. A current-sense device is coupled to the sense transistor for generating the switching-current signal in response to the mirror current. The controller enables the driving signal to turn on the power transistor once the diode is forwardly biased. The controller generates a reset signal to disable the driving signal and turn off the power transistor once the switching-current signal is lower than a threshold.

摘要翻译： 提供谐振开关电源转换器的同步整流电路以提高效率。 同步整流电路包括功率晶体管和连接到变压器的二极管和用于整流的功率转换器的输出地。 感测晶体管耦合到功率晶体管，用于产生与功率晶体管的电流相关的反射镜电流。 控制器响应于开关电流信号产生驱动信号以控制功率晶体管。 电流感测装置耦合到感测晶体管，用于响应于反射镜电流产生开关电流信号。 一旦二极管向前偏置，控制器使驱动信号接通功率晶体管。 一旦开关电流信号低于阈值，控制器产生复位信号来禁止驱动信号并关断功率晶体管。