Power management circuit and electronic device thereof and power supply method thereof

    公开(公告)号:US10985605B2

    公开(公告)日:2021-04-20

    申请号:US16512500

    申请日:2019-07-16

    Abstract: A power management method includes: determining, by a control circuit, whether a first connector is connected to a first power supply and whether a second connector is connected to a second power supply. The method further includes: controlling, by the control circuit, a first conversion circuit to supply power to a battery unit and a system circuit, and computing a second fully-charged condition that is less than a first fully-charged condition when a determining result is yes. The method also includes: determining, by the control circuit, whether power information of the battery unit reaches the second fully-charged condition, and controlling, by the control circuit, a second conversion circuit to convert a second power from the second connector according to the second fully-charged condition, to supply power to the battery unit and the system circuit. A related circuit and electronic device are also provided.

    Charge-discharge device and control method of the same

    公开(公告)号:US10804713B2

    公开(公告)日:2020-10-13

    申请号:US15838680

    申请日:2017-12-12

    Abstract: A charge-discharge device and a control method of the charge-discharge device are provided. The control method of the charge-discharge device comprising: receiving an input voltage signal via a configuration channel of a USB port; sampling the input voltage signal in a predetermined period to generate a plurality of sampling values; selectively connecting the configuration channel to a pull-down circuit or a pull-up circuit according to the sampling values, receiving a first charging voltage via a power channel of the USB port when the configuration channel is connected to the pull-down circuit, and outputting a second charging voltage via the power channel when the configuration channel is connected to the pull-up circuit.

    Electronic device and charging method thereof

    公开(公告)号:US11641124B2

    公开(公告)日:2023-05-02

    申请号:US15923252

    申请日:2018-03-16

    Abstract: Provided is an electronic device configured to be charged with an adapter. The electronic device includes an energy storage unit, a charging unit and a switch unit. The charging unit is configured to receive a bus voltage and output a charging voltage to charge the energy storage unit. The switch unit is electrically coupled in parallel to the charging unit. When the electronic device is coupled to the adapter through a bus interface, the electronic device receives the bus voltage from the adapter, receives a communication signal from the adapter, and selectively turns on or off the switch unit according to the communication signal, and when the electronic device operates in a direct charging mode, the switch unit is turned on to form a direct charging path, to charge the energy storage unit by using the bus voltage.

    Charging protection device and method thereof

    公开(公告)号:US10965131B2

    公开(公告)日:2021-03-30

    申请号:US15851995

    申请日:2017-12-22

    Abstract: A charging protection device comprises a universal serial bus (USB) interface, a resistance circuit, a detection circuit and a control circuit. The universal serial bus interface includes a configuration channel. The resistance circuit includes a pull-down resistor coupled between the configuration channel and a ground GND. The detection circuit is configured to detect an abnormal charging condition. The detection circuit generates an abnormal signal when the abnormal charging condition occurs. The control circuit is coupled to the detection circuit and configured to change a voltage value on the pull-down resistor to be out of a preset voltage range according to the abnormal signal.

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