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    • 1. 发明授权
    • Circuitry to prevent overvoltage of circuit systems
    • 电路防止电路系统过电压
    • US08619400B2
    • 2013-12-31
    • US13424116
    • 2012-03-19
    • Robert Curtis DobkinDavid Henry Soo
    • Robert Curtis DobkinDavid Henry Soo
    • H02H9/04
    • H02H1/06H02H9/04H02H9/048
    • An overvoltage protection method and circuit includes a positive supply input node, an output node, and a negative supply node. The overvoltage protection circuit further includes a first functional circuit configured to turn ON a MOSFET and maintain it in a low resistance state. A second functional circuit is configured to detect an overvoltage and control the gate of the MOSFET to regulate a voltage at the output node. A third functional circuit is configured to provide a startup wherein the overvoltage protection circuit is not damaged and/or to regulate an operating voltage such that an overvoltage does not appear on the overvoltage protection circuit. The external components include the MOSFET, which has a gate coupled to the output of the charge pump of the overvoltage protection circuit.
    • 过电压保护方法和电路包括正电源输入节点,输出节点和负电源节点。 过电压保护电路还包括第一功能电路,其被配置为导通MOSFET并将其保持在低电阻状态。 第二功能电路被配置为检测过电压并且控制MOSFET的栅极以调节输出节点处的电压。 第三功能电路被配置为提供启动,其中过电压保护电路不被损坏和/或调节工作电压,使得过电压保护电路上不会出现过电压。 外部组件包括MOSFET,栅极耦合到过电压保护电路的电荷泵的输出端。
    • 2. 发明申请
    • CIRCUITRY TO PREVENT OVERVOLTAGE OF CIRCUIT SYSTEMS
    • 电路防止电路系统过电压
    • US20120287540A1
    • 2012-11-15
    • US13424116
    • 2012-03-19
    • Robert Curtis DOBKINDavid Henry SOO
    • Robert Curtis DOBKINDavid Henry SOO
    • H02H9/04H02H3/06H02H3/20
    • H02H1/06H02H9/04H02H9/048
    • An overvoltage protection method and circuit includes a positive supply input node, an output node, and a negative supply node. The overvoltage protection circuit further includes a first functional circuit configured to turn ON a MOSFET and maintain it in a low resistance state. A second functional circuit is configured to detect an overvoltage and control the gate of the MOSFET to regulate a voltage at the output node. A third functional circuit is configured to provide a startup wherein the overvoltage protection circuit is not damaged and/or to regulate an operating voltage such that an overvoltage does not appear on the overvoltage protection circuit. The external components include the MOSFET, which has a gate coupled to the output of the charge pump of the overvoltage protection circuit.
    • 过电压保护方法和电路包括正电源输入节点,输出节点和负电源节点。 过电压保护电路还包括第一功能电路,其被配置为导通MOSFET并将其保持在低电阻状态。 第二功能电路被配置为检测过电压并且控制MOSFET的栅极以调节输出节点处的电压。 第三功能电路被配置为提供启动,其中过电压保护电路不被损坏和/或调节工作电压,使得过电压保护电路上不会出现过电压。 外部组件包括MOSFET,栅极耦合到过电压保护电路的电荷泵的输出端。
    • 6. 发明授权
    • Circuits and methods for controlling load sharing by multiple power supplies
    • 用于控制多个电源负载共享的电路和方法
    • US06465909B1
    • 2002-10-15
    • US09628534
    • 2000-07-31
    • David Henry SooRobert Loren Reay
    • David Henry SooRobert Loren Reay
    • H02J110
    • H02J1/102H02H9/004Y10T307/549Y10T307/555Y10T307/604
    • Circuits and methods for controlling load sharing by multiple power supplies are provided. In preferred embodiments, load share controllers utilize multiple voltage control loops to monitor the output voltages that are being provided by multiple power supplies connected to a load. These voltage control loops each generate a voltage control voltage that is proportional to the difference between the actual output voltage of the corresponding power supply and the desired output voltage. The voltage control loop with the highest voltage control voltage then controls a current control voltage generated in a current control loop for each power supply via a share bus. These current control loops then regulate the current provided by the corresponding power supplies so that those currents are all proportional to the voltage on the share bus. By monitoring the current control voltage in each current control loop, the voltage at the output of each power supply, and the direction of the current flowing between each power supply and the load, the circuits and methods of preferred embodiments of the invention can detect and account for out-of-regulation conditions, over voltage conditions, short circuit conditions, and hot-swapping conditions.
    • 提供了用于控制多个电源负载共享的电路和方法。 在优选实施例中,负载共享控制器利用多个电压控制回路来监测由连接到负载的多个电源提供的输出电压。 这些电压控制回路各自产生与相应电源的实际输出电压与所需输出电压之差成比例的电压控制电压。 具有最高电压控制电压的电压控制回路然后通过共享总线控制在每个电源的电流控制回路中产生的电流控制电压。 这些电流控制回路然后调节由相应的电源提供的电流,使得那些电流全部与共享总线上的电压成比例。 通过监视每个电流控制环路中的电流控制电压,每个电源的输出端的电压以及每个电源和负载之间流动的电流的方向,本发明的优选实施例的电路和方法可以检测和 考虑到超调条件,过压条件,短路条件和热插拔条件。