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    SYSTEM AND METHOD FOR CONTROLLING RESONANT WIRELESS POWER SOURCE
    3.
    发明申请
    SYSTEM AND METHOD FOR CONTROLLING RESONANT WIRELESS POWER SOURCE 有权
    用于控制无线电源的系统和方法

    公开(公告)号：US20140035384A1

    公开(公告)日：2014-02-06

    申请号：US13956377

    申请日：2013-08-01

    Applicant: MediaTek Singapore Pte. Ltd.

    Inventor： Anand Satyamoorthy ,  Hasnain Akram ,  Patrick Stanley Riehl

    IPC: H01F38/14

    CPC classification number: H02J50/12 ,  H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/40 ,  H02J50/80

    Abstract: A resonant wireless power system includes a source circuit having a source coil, an ac driver with a first resistance, representing the equivalent output impedance of the ac driver, and a matching network. A current probe measures the magnitude signal of the instantaneous source coil current. A voltage probe measures the instantaneous ac driver voltage. A phase detector compares the phase of the instantaneous source coil current and the instantaneous ac driver voltage, and produces a first output signal proportional to the phase difference. A first amplifier compares the magnitude signal and a target signal, and produces an error signal proportional to the difference. A first compensation filter produces the control voltage that determines the ac driver supply voltage. A second amplifier amplifies the first output signal. A second compensation filter produces the control voltage that determines the impedance of a variable element in the source circuit.

    Abstract translation: 谐振无线电力系统包括具有源极线圈的源电路，具有第一电阻的交流驱动器，表示ac驱动器的等效输出阻抗和匹配网络。 电流探头测量瞬时源线圈电流的幅度信号。 电压探头测量瞬时交流驱动器电压。 相位检测器比较瞬时源线圈电流和瞬时交流驱动器电压的相位，并产生与相位差成比例的第一输出信号。 第一放大器将幅度信号和目标信号进行比较，并且产生与差成比例的误差信号。 第一补偿滤波器产生确定交流驱动器电源电压的控制电压。 第二放大器放大第一输出信号。 第二补偿滤波器产生确定源电路中的可变元件的阻抗的控制电压。

    System and method for controlling resonant wireless power source
    5.
    发明授权
    System and method for controlling resonant wireless power source 有权

    公开(公告)号：US09722462B2

    公开(公告)日：2017-08-01

    申请号：US13956377

    申请日：2013-08-01

    Applicant: MediaTek Singapore Pte. Ltd.

    Inventor： Anand Satyamoorthy ,  Hasnain Akram ,  Patrick Stanley Riehl

    IPC: H02J50/12 ,  H01F38/14 ,  H02J5/00 ,  H02J17/00

    CPC classification number: H02J50/12 ,  H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00 ,  H02J50/40 ,  H02J50/80

    Abstract: A resonant wireless power system includes a source circuit having a source coil, an ac driver with a first resistance, representing the equivalent output impedance of the ac driver, and a matching network. A current probe measures the magnitude signal of the instantaneous source coil current. A voltage probe measures the instantaneous ac driver voltage. A phase detector compares the phase of the instantaneous source coil current and the instantaneous ac driver voltage, and produces a first output signal proportional to the phase difference. A first amplifier compares the magnitude signal and a target signal, and produces an error signal proportional to the difference. A first compensation filter produces the control voltage that determines the ac driver supply voltage. A second amplifier amplifies the first output signal. A second compensation filter produces the control voltage that determines the impedance of a variable element in the source circuit.

    Wireless power receiver with programmable power path
    6.
    发明授权
    Wireless power receiver with programmable power path 有权

    公开(公告)号：US09954400B2

    公开(公告)日：2018-04-24

    申请号：US15037051

    申请日：2015-01-08

    Applicant: MediaTek Singapore Pte. Ltd.

    Inventor： Hasnain Akram ,  Yung-Chih Yen ,  Patrick Stanley Riehl ,  Anand Satyamoorthy

    IPC: H02M3/156 ,  H02J50/12 ,  H02J5/00 ,  H02J7/02 ,  H01F38/14 ,  G05F1/575 ,  H02M3/07 ,  H02M7/217 ,  H04B5/00 ,  H02M1/00 ,  H02M7/219 ,  G05F1/56

    Abstract: A synchronous rectifier using only n-channel devices in which the low-side switches are effectively cross-coupled using low-side comparators and the high-side switches perform an accurate zero-voltage-switching (ZVS) comparison. The charging path of each bootstrap domain is completed through the low-side switches, which are each always on for every half-cycle independent of loading. This scheme gives rectifier efficiency gain because a) each bootstrap domain receives maximum charging time, and b) the charging occurs through a switch rather than a diode. Both these factors ensure the bootstrap domain is fully charged, thereby reducing conduction losses through the rectifier switches. Furthermore, settings may be adjusted by software to optimize the resistive and capacitive losses of the rectifier. Using data for die temperature and operating frequency, software can create a feedback loop, dynamically adjusting rectifier settings in order to achieve the best possible efficiency.

    OPEN-CIRCUIT IMPEDANCE CONTROL OF A RESONANT WIRELESS POWER RECEIVER FOR VOLTAGE LIMITING
    7.
    发明申请
    OPEN-CIRCUIT IMPEDANCE CONTROL OF A RESONANT WIRELESS POWER RECEIVER FOR VOLTAGE LIMITING 有权
    用于电压限幅的谐振无线电接收器的开路阻抗控制

    公开(公告)号：US20140246923A1

    公开(公告)日：2014-09-04

    申请号：US14355212

    申请日：2013-09-27

    Applicant: MediaTek Singapore Pte. Ltd.

    Inventor： Patrick Stanley Riehl ,  Anand Satyamoorthy ,  Hasnain Akram

    IPC: H02J17/00

    CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J17/00

    Abstract: A resonant wireless power (RWP) receiver is provided that includes an inductor element that couples with a resonant wireless power source. A capacitor arrangement is coupled to the inductor element altering the open-circuit impedance of the RWP receiver to reduce the ac voltage under certain defined situations. The capacitor arrangement includes a plurality capacitors tuned to a control ac voltage in the RWP receiver.

    Abstract translation: 提供了一种谐振无线电力（RWP）接收器，其包括与谐振无线电源耦合的电感器元件。 电容器布置耦合到电感器元件，改变RWP接收器的开路阻抗以在某些限定的情况下降低交流电压。 该电容器装置包括调谐到RWP接收器中的控制交流电压的多个电容器。

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