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    • 1. 发明申请
    • SYSTEMS AND METHODS FOR CABLE RESISTANCE COMPENSATION
    • 电缆电阻补偿的系统和方法
    • WO2015191287A1
    • 2015-12-17
    • PCT/US2015/032721
    • 2015-05-27
    • QUALCOMM INCORPORATED
    • SPORCK, ChristianHAWAWINI, ShadiO'BRIEN, Thomas
    • H02M1/00H02J7/02G06F1/28
    • G05F5/00H02J5/00H02J7/02H02M1/00H02M2001/0022
    • The present disclosure includes circuits and methods for cable resistance compensation. In one embodiment, the present disclosure includes a circuit comprising a regulator coupled to receive an input voltage and an input current from an external power source across a cable, a voltage sensor coupled to sense the input voltage, a collapse detector coupled to detect whether or not the input voltage is below a first value, and a current limit circuit to control a maximum current in the regulator. The current limit circuit is reconfigured to a plurality of current limit values and the collapse detector detects if the input voltage from the external power source collapses below the first value at the plurality of current limit values. The voltage sensor measures different voltages at different input currents, and in accordance therewith, reduces collapse voltage value to compensate for a voltage drop caused by a resistance of the cable.
    • 本公开包括用于电缆电阻补偿的电路和方法。 在一个实施例中,本发明包括一个电路,该电路包括耦合以接收来自跨电缆的外部电源的输入电压和输入电流的调节器,耦合以感测输入电压的电压传感器,耦合以检测是否或 不是输入电压低于第一值,而限流电路控制调节器中的最大电流。 电流限制电路被重新配置为多个电流限制值,并且塌陷检测器检测来自外部电源的输入电压是否在多个电流极限值下崩溃低于第一值。 电压传感器测量不同输入电流下的不同电压,并根据此减少塌陷电压值,以补偿由电缆电阻引起的电压降。
    • 2. 发明申请
    • OVER-VOLTAGE PROTECTION SYSTEMS AND METHODS
    • 过电压保护系统和方法
    • WO2017204970A1
    • 2017-11-30
    • PCT/US2017/029419
    • 2017-04-25
    • QUALCOMM INCORPORATED
    • OPORTA, Hector, IvanMANE, Shashank, PrakashO'BRIEN, ThomasSPORCK, Christian, Gregory
    • H03K19/003H03K19/0185
    • Over-voltage protection systems and methods are disclosed. In one aspect, a biasing circuit is added to a pre-existing clamp required by the Universal Serial Bus (USB) Type-C specification at a configuration control (CC) pin. The biasing circuit turns the pre-existing clamp into an adjustable clamp that dynamically adjusts to over-voltage conditions. In an exemplary aspect, the biasing circuit may include a biasing field effect transistor (FET) and a pair of switches that selectively couple the pre-existing clamp and the biasing FET to fixed voltages such that the CC pin is maintained at an acceptable voltage. In another exemplary aspect, the biasing circuit may omit the biasing FET and rely on two switches that selectively couple the pre-existing clamp to fixed voltages such that the CC pin is maintained at an acceptable voltage.
    • 公开了过压保护系统和方法。 在一个方面,在配置控制(CC)引脚处将偏置电路添加到通用串行总线(USB)C型规范所要求的预先存在的钳位。 偏置电路将预先存在的钳位转换为可调节钳位,可动态调整过压状态。 在示例性方面中,偏置电路可以包括偏置场效应晶体管(FET)和一对开关,其选择性地将预先存在的钳位和偏置FET耦合到固定电压,使得CC引脚保持在可接受的电压。 在另一示例性方面中,偏置电路可省略偏置FET并依赖于两个开关,这两个开关将预先存在的钳位选择性地耦合到固定电压,使得CC管脚保持在可接受的电压。
    • 3. 发明申请
    • TYPE-C FACTORY AND SPECIAL OPERATING MODE SUPPORT
    • TYPE-C工厂和特殊的操作模式支持
    • WO2017160461A1
    • 2017-09-21
    • PCT/US2017/018217
    • 2017-02-16
    • QUALCOMM INCORPORATED
    • SPORCK, Christian GregoryPAPARRIZOS, GeorgiosOPORTA, HectorMANE, Shashank PrakashLEE, Bang SupO'BRIEN, Thomas
    • G06F11/22
    • Systems, methods, and apparatus for testing devices adapted for connection to other devices using universal serial bus (USB) are disclosed. Devices to be tested are caused to enter a special mode of operation when a resistance measured across across two terminals of a USB Type-C connector has a value associated with the special mode of operation. One or more operations of the device are automatically initiated when the resistance between the two terminals has a measured value that matches one of a set of resistance values maintained by the device. The one or more operations may include configuring a power management circuit based on the measured value, and entering a special or factory boot mode that controls startup of at least one processor on the device based on the measured value. Each of the set of resistance values exceeds a minimum open-circuit resistance value specified for the connector.
    • 公开了用于测试适于使用通用串行总线(USB)连接到其他设备的设备的系统,方法和设备。 当通过USB Type-C连接器两端测量的电阻具有与特殊工作模式相关的值时,要使测试设备进入特殊工作模式。 当两个端子之间的电阻具有与设备保持的一组电阻值中的一个相匹配的测量值时,设备的一个或多个操作自动启动。 所述一个或多个操作可以包括基于测量值配置功率管理电路,并且基于测量值进入控制设备上的至少一个处理器的启动的特殊或工厂引导模式。 每组电阻值都超过为连接器指定的最小开路电阻值。
    • 4. 发明申请
    • TYPE-C FACTORY AND SPECIAL OPERATING MODE SUPPORT
    • TYPE-C工厂和特殊的操作模式支持
    • WO2017161346A1
    • 2017-09-21
    • PCT/US2017/023087
    • 2017-03-17
    • QUALCOMM INCORPORATED
    • SPORCK, Christian GregoryPAPARRIZOS, GeorgiosOPORTA, HectorMANE, Shashank PrakashLEE, Bang SupO'BRIEN, Thomas
    • G06F11/22G06F21/70
    • G06F21/70G06F11/2273
    • Systems, methods, and apparatus for testing devices adapted for connection to other devices using universal serial bus (USB) are disclosed. Devices to be tested are caused to enter a special mode of operation when resistance measured at one or more terminals of a USB Type-C connector have values associated with the special mode of operation. One or more operations of the device are automatically initiated when the resistance coupled to the at least one terminal of the connector has a measured value that matches one of a set of resistance values maintained by the device. The one or more operations may include configuring a power management circuit based on the measured value, and entering a mode of operation that controls startup of at least one processor on the device when the measured value matches a first resistance value.
    • 公开了用于测试适于使用通用串行总线(USB)连接到其他设备的设备的系统,方法和设备。 当在USB Type-C连接器的一个或多个端子上测量的电阻具有与特殊操作模式相关的值时,要被测试的器件进入特殊操作模式。 当耦合到连接器的至少一个端子的电阻具有与由设备维持的一组电阻值中的一个匹配的测量值时,设备的一个或多个操作被自动启动。 该一个或多个操作可以包括基于测量值来配置功率管理电路,并且当测量值与第一电阻值匹配时,进入控制设备上的至少一个处理器的启动的操作模式。