Self-adapting voltage amplifier and battery charger detection
    8.
    发明授权
    Self-adapting voltage amplifier and battery charger detection 有权
    自适应电压放大器和电池充电器检测

    公开(公告)号:US09106089B2

    公开(公告)日:2015-08-11

    申请号:US13958600

    申请日:2013-08-04

    IPC分类号: H02J7/00 H03F3/45

    摘要: An amplifier applies a self-adapting voltage to an output terminal. A bias circuit provides a greater bias current in a first external connection condition, in the absence of a pull-up resistance connected to the output terminal, than when such a pull-up resistance is present. The amplifier applies a different voltage to the output terminal in the absence of a pull-up resistance than when such a pull-up resistance is present. The circuit can be used in a portable device for receiving charging current from a battery charger through a connector having a D+ pin for connection to the battery charger and connected to the amplifier output terminal for battery charger detection. The portable device can meet the USB battery charger specification rev. 1.2.

    摘要翻译: 放大器将自适应电压施加到输出端子。 在不存在连接到输出端子的上拉电阻的情况下,偏置电路在第一外部连接状态下提供更大的偏置电流,而不是存在这样的上拉电阻。 在不存在上拉电阻的情况下,放大器对输出端子施加不同的电压,而不是存在这样的上拉电阻。 该电路可以用在便携式设备中,用于通过具有用于连接到电池充电器的D +引脚的连接器从电池充电器接收充电电流,并连接到用于电池充电器检测的放大器输出端子。 便携式设备可以满足USB电池充电器规格的修改。 1.2。