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    Control circuits and methods for switching mode power supplies
    1.
    发明授权
    Control circuits and methods for switching mode power supplies 有权
    用于切换模式电源的控制电路和方法

    公开(公告)号：US08587968B2

    公开(公告)日：2013-11-19

    申请号：US13364269

    申请日：2012-02-01

    申请人： YaJiang Zhu ,  Jia Xie ,  Yongbo Zhang ,  Chao Chen ,  Shuzhuang Lv

    发明人： YaJiang Zhu ,  Jia Xie ,  Yongbo Zhang ,  Chao Chen ,  Shuzhuang Lv

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33523

    摘要： A switching mode power supply (SMPS) includes a transformer having a primary winding, a secondary winding for providing an output voltage, and an auxiliary winding. The SMPS also includes a power switch coupled to the primary winding. A first control circuit is coupled to the secondary winding, and is configured to provide a first electrical signal to the secondary winding when the output voltage of the SMPS is less than a reference voltage during a discontinuous time, whereupon a second electrical signal is induced in the auxiliary winding. A second control circuit is coupled to the auxiliary winding and the power switch. The second control circuit is configured to regulate the output of the SMPS by controlling the power switch in response to a feedback voltage signal from the auxiliary winding, and is further configured to turn on the power switch in response to the second electrical signal.

    摘要翻译： 开关模式电源（SMPS）包括具有初级绕组的变压器，用于提供输出电压的次级绕组和辅助绕组。 SMPS还包括耦合到初级绕组的电源开关。 第一控制电路耦合到次级绕组，并且被配置为当在不连续时间期间SMPS的输出电压小于参考电压时，向次级绕组提供第一电信号，由此在第二电信号中引入第二电信号 辅助绕组。 第二控制电路耦合到辅助绕组和电源开关。 第二控制电路被配置为通过响应于来自辅助绕组的反馈电压信号控制功率开关来调节SMPS的输出，并且还被配置为响应于第二电信号而接通功率开关。

    CONTROL CIRCUITS AND METHODS FOR SWITCHING MODE POWER SUPPLIES
    2.
    发明申请
    CONTROL CIRCUITS AND METHODS FOR SWITCHING MODE POWER SUPPLIES 有权
    用于切换模式电源的控制电路和方法

    公开(公告)号：US20120134182A1

    公开(公告)日：2012-05-31

    申请号：US13364269

    申请日：2012-02-01

    申请人： YaJiang Zhu ,  Jia Xie ,  Yongbo Zhang ,  Chao Chen ,  Shuzhuang Lv

    发明人： YaJiang Zhu ,  Jia Xie ,  Yongbo Zhang ,  Chao Chen ,  Shuzhuang Lv

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33523

    摘要： A switching mode power supply (SMPS) includes a transformer having a primary winding, a secondary winding for providing an output voltage, and an auxiliary winding. The SMPS also includes a power switch coupled to the primary winding. A first control circuit is coupled to the secondary winding, and is configured to provide a first electrical signal to the secondary winding when the output voltage of the SMPS is less than a reference voltage during a discontinuous time, whereupon a second electrical signal is induced in the auxiliary winding. A second control circuit is coupled to the auxiliary winding and the power switch. The second control circuit is configured to regulate the output of the SMPS by controlling the power switch in response to a feedback voltage signal from the auxiliary winding, and is further configured to turn on the power switch in response to the second electrical signal.

    摘要翻译： 开关模式电源（SMPS）包括具有初级绕组的变压器，用于提供输出电压的次级绕组和辅助绕组。 SMPS还包括耦合到初级绕组的电源开关。 第一控制电路耦合到次级绕组，并且被配置为当在不连续时间期间SMPS的输出电压小于参考电压时，向次级绕组提供第一电信号，由此在第二电信号中引入第二电信号 辅助绕组。 第二控制电路耦合到辅助绕组和电源开关。 第二控制电路被配置为通过响应于来自辅助绕组的反馈电压信号控制功率开关来调节SMPS的输出，并且还被配置为响应于第二电信号而接通功率开关。

    Control circuits and methods for switching mode power supplies
    3.
    发明授权
    Control circuits and methods for switching mode power supplies 有权
    用于切换模式电源的控制电路和方法

    公开(公告)号：US08125799B2

    公开(公告)日：2012-02-28

    申请号：US12605081

    申请日：2009-10-23

    申请人： YaJiang Zhu ,  Jia Xie ,  Yongbo Zhang ,  Chao Chen ,  Shuzhuang Lv

    发明人： YaJiang Zhu ,  Jia Xie ,  Yongbo Zhang ,  Chao Chen ,  Shuzhuang Lv

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33523

    摘要： Circuits and method for sensing a system output voltage change and transmitting an electrical signal to an auxiliary winding on the primary side. In an embodiment, a primary side controller detects the electrical signal and turns a power switch on and off to transfer energy from a primary winding to a secondary winding. A secondary side controller generates a voltage pulse at a terminal of the secondary winding when the system output voltage is below a reference voltage. The secondary side controller includes an input terminal connected to a system output, an output terminal connected to a terminal of the secondary winding, and a ground terminal connected to a ground potential of the system output.

    摘要翻译： 用于感测系统输出电压的电路和方法改变并将电信号发送到初级侧的辅助绕组。 在一个实施例中，初级侧控制器检测电信号并打开和关闭电源开关以将能量从初级绕组传递到次级绕组。 当系统输出电压低于参考电压时，次级侧控制器在次级绕组的端子处产生电压脉冲。 次级侧控制器包括连接到系统输出的输入端子，连接到次级绕组的端子的输出端子和连接到系统输出的地电位的接地端子。

    CONTROL CIRCUITS AND METHODS FOR SWITCHING MODE POWER SUPPLIES
    4.
    发明申请
    CONTROL CIRCUITS AND METHODS FOR SWITCHING MODE POWER SUPPLIES 有权
    用于切换模式电源的控制电路和方法

    公开(公告)号：US20110096573A1

    公开(公告)日：2011-04-28

    申请号：US12605081

    申请日：2009-10-23

    申请人： YaJiang Zhu ,  Jia Xie ,  Yongbo Zhang ,  Chao Chen ,  Shuzhuang Lv

    发明人： YaJiang Zhu ,  Jia Xie ,  Yongbo Zhang ,  Chao Chen ,  Shuzhuang Lv

    IPC分类号： H02M3/335

    CPC分类号： H02M3/33523

    摘要： Circuits and method for sensing a system output voltage change and transmitting an electrical signal to an auxiliary winding on the primary side. In an embodiment, a primary side controller detects the electrical signal and turns a power switch on and off to transfer energy from a primary winding to a secondary winding. A secondary side controller generates a voltage pulse at a terminal of the secondary winding when the system output voltage is below a reference voltage. The secondary side controller includes an input terminal connected to a system output, an output terminal connected to a terminal of the secondary winding, and a ground terminal connected to a ground potential of the system output.

    摘要翻译： 用于感测系统输出电压的电路和方法改变并将电信号发送到初级侧的辅助绕组。 在一个实施例中，初级侧控制器检测电信号并打开和关闭电源开关以将能量从初级绕组传递到次级绕组。 当系统输出电压低于参考电压时，次级侧控制器在次级绕组的端子处产生电压脉冲。 次级侧控制器包括连接到系统输出的输入端子，连接到次级绕组的端子的输出端子和连接到系统输出的地电位的接地端子。