Integrated circuit using bias current, bias current generating device, and operating method for the same

    公开(公告)号:US11733727B2

    公开(公告)日:2023-08-22

    申请号:US17680386

    申请日:2022-02-25

    CPC classification number: G05F3/205 H03F3/16 H03K17/223

    Abstract: Disclosed is an integrated circuit including a first bias current generating circuit. The first bias current generating circuit includes a first amplifier receiving a reference voltage and a first voltage and amplifying a difference between them to output a first output voltage, a first bias current generator receiving the first output voltage and outputting a first bias current in response to the first output voltage, a variable resistor receiving the first bias current and outputting the first voltage in response to the first bias current and a calibration code, a second bias current generator receiving the first output voltage and outputting a second bias current to a peripheral circuit in response to the first output voltage, and a third bias current generator receiving the first output voltage and outputting a third bias current to an external device through a first pad in response to the first output voltage.

    Wireless power transmission apparatus and wireless power transmission method thereof

    公开(公告)号:US10862340B2

    公开(公告)日:2020-12-08

    申请号:US16266619

    申请日:2019-02-04

    Abstract: A wireless power transmission apparatus for wirelessly transmitting power to a wireless power reception apparatus is provided. The wireless power transmission apparatus includes a power transmitting circuit including a coil and at least one processor to control to transmit, via the power transmitting circuit, a pilot power with changing a frequency of the pilot power within a predetermined frequency range, obtain a magnitude of power wirelessly transmitted to a wireless power reception apparatus based on the transmitted pilot power, determine an operating frequency based on the obtained magnitude, and control to transmit, via the power transmitting circuit, a driving power having the operating frequency to drive the wireless power reception apparatus.

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