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    WIRELESS POWER TRANSFER IN-BAND COMMUNICATION SYSTEM
    2.
    发明申请
    WIRELESS POWER TRANSFER IN-BAND COMMUNICATION SYSTEM 审中-公开
    无线电力传输带内通信系统

    公开(公告)号：US20160254696A1

    公开(公告)日：2016-09-01

    申请号：US15147919

    申请日：2016-05-06

    Applicant: MediaTek Singapore Pte. Ltd.

    Inventor： William Plumb ,  Zhen Wang ,  Zoran Zvonar ,  Patrick Stanley Riehl ,  Anand Satyamoorthy ,  Philip Frank Tustin

    IPC: H02J7/02 ,  H04L1/00 ,  H04B5/00 ,  H02J50/10 ,  H02J50/60

    CPC classification number: H02J50/12 ,  H02J7/025 ,  H02J50/10 ,  H02J50/60 ,  H02J50/80 ,  H04B5/0037 ,  H04B5/0093 ,  H04L1/0045 ,  H04L1/0061 ,  H04L25/4904 ,  H04W52/0261

    Abstract: A transmitter module is used in a wireless charging system, and is used for performing in-band communication with a receiver module in the wireless charging system to provide a message to the receiver module. The transmitter module has a matching network, a rectifier and an impedance component. The matching network has at least one input terminal coupled to a coil of the transmitter module and at least one output terminal. The rectifier is coupled to the output terminal of the matching network. The impedance component is selectively coupled to the output terminal of the matching network to vary a reflected impedance of the transmitter module seen by the receiver module. By varying the reflected impedance of the transmitter module seen by the receiver module, the transmitter module communicates with the receiver module to provide power control commands, status and/or foreign object detection information.

    Abstract translation: 在无线充电系统中使用发射机模块，用于与无线计费系统中的接收机模块进行带内通信，以向接收机模块提供消息。 发射机模块具有匹配网络，整流器和阻抗组件。 匹配网络具有耦合到发射器模块的线圈和至少一个输出端子的至少一个输入端子。 整流器耦合到匹配网络的输出端。 阻抗分量选择性地耦合到匹配网络的输出端，以改变由接收器模块看到的发射器模块的反射阻抗。 通过改变由接收机模块看到的发射机模块的反射阻抗，发射机模块与接收机模块通信，以提供功率控制命令，状态和/或异物检测信息。

    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。

    Wireless power transfer in-band communication system
    6.
    发明授权
    Wireless power transfer in-band communication system 有权
    无线功率传输带内通信系统

    公开(公告)号：US09363041B2

    公开(公告)日：2016-06-07

    申请号：US14356607

    申请日：2013-10-25

    Applicant: William Plumb ,  Zhen Wang ,  Zoran Zvonar ,  Patrick Stanley Riehl ,  Anand Satyamoorthy ,  Philip Frank Tustin ,  MediaTek Singapore Pte. Ltd.

    Inventor： William Plumb ,  Zhen Wang ,  Zoran Zvonar ,  Patrick Stanley Riehl ,  Anand Satyamoorthy ,  Philip Frank Tustin

    IPC: H04L27/10 ,  H04L1/00 ,  H04W52/02 ,  H04L25/49 ,  H02J7/02

    CPC classification number: H02J50/12 ,  H02J7/025 ,  H02J50/10 ,  H02J50/60 ,  H02J50/80 ,  H04B5/0037 ,  H04B5/0093 ,  H04L1/0045 ,  H04L1/0061 ,  H04L25/4904 ,  H04W52/0261

    Abstract: A wireless charging in-band communication system includes a transmitter module that formats a message using CRC calculation and attaches the results of the CRC calculation to the message for message error detection. The transmitter includes channel encoding for message error correction. A modulation module performs biphase modulation for DC balanced signals and impedance switching to change reflected impedance seen by the source. A synchronization module prepending the message with a synchronization sequence having Golay complementary codes. Moreover, the in-band communication includes a receiver module that receives the message from the transmitter module. The receiver module includes an impedance sensing circuit to detect changes in the reflected impedance of the transmitter module. The receiver module includes a front end filter used for pulse shaping and noise rejection. A preamble detection block includes a Golay complementary code correlator used for message detection, synchronization, and equalization coefficient estimation and selection. A decoding module performs biphase demodulation with error correction with a DC offset being estimated as the average value of the signal over the length of the message before channel decoding Also, the decoding module performs equalization, error correction channel decoding,and error detection (CRC).

    Abstract translation: 无线充电带内通信系统包括发射机模块，其使用CRC计算格式化消息，并将CRC计算的结果附加到用于消息错误检测的消息。 发射机包括用于消息纠错的信道编码。 调制模块对直流平衡信号进行双相调制，并进行阻抗切换，以改变源所见的反射阻抗。 一个同步模块，前置消息具有一个具有Golay补码的同步序列。 此外，带内通信包括从发射机模块接收消息的接收机模块。 接收器模块包括用于检测发射器模块的反射阻抗的变化的阻抗感测电路。 接收器模块包括用于脉冲整形和噪声抑制的前端滤波器。 前导码检测块包括用于消息检测，同步和均衡系数估计和选择的Golay互补码相关器。 解码模块执行纠错的双相解调，其中DC偏移被估计为在信道解码之前的消息的长度上的信号的平均值。另外，解码模块执行均衡，纠错信道解码和错误检测（CRC） 。

    Wireless Power Receiver with Programmable Power Path
    7.
    发明申请
    Wireless Power Receiver with Programmable Power Path 审中-公开
    具有可编程电源路径的无线电源接收器

    公开(公告)号：US20150364928A1

    公开(公告)日：2015-12-17

    申请号：US14763829

    申请日：2015-01-08

    Applicant: MEDIATEK SINGAPORE PTE. LTD.

    Inventor： Yung-Chih Yen ,  Patrick Stanley Riehl ,  HASNAIN AKRAM ,  Anand Satyamoorthy

    IPC: H02J5/00 ,  H01F38/14 ,  G05F1/56 ,  H02J7/02

    CPC classification number: H02J50/12 ,  G05F1/56 ,  H01F38/14 ,  H02J5/005 ,  H02J7/025 ,  H02M3/07 ,  H02M3/156 ,  H02M7/217 ,  H02M2001/0045 ,  H02M2007/2195 ,  H04B5/0037 ,  Y02B70/1408 ,  Y02B70/1425 ,  Y02B70/1441

    Abstract: A wireless power receiver IC in which the power path can be reconfigured as either a low-dropout regulator (LDO), a switched-mode power supply (SMPS) or a power switch (PSW) is provided. All three modes share the same pass device to reduce die area and share the same output terminal to reduce pin. In an inductive wireless receiver, the power path can be reprogrammed on the fly to LDO or PSW mode or can be reprogrammed on the fly to SMPS or PSW mode. In a resonant or multi-mode wireless receiver, the power path can be reprogrammed on the fly to SMPS or PSW mode. Furthermore, to achieve high power transfer efficiency performance, using N-channel MOSFET as its pass device has better efficiency and smaller die area than P-channel MOSFET pass device.

    Abstract translation: 提供其中电力路径可以被重新配置为低压差稳压器（LDO），开关模式电源（SMPS）或电源开关（PSW）的无线电力接收器IC。 所有三种模式共享相同的通过器件，以减少管芯面积并共享相同的输出端子以减少引脚。 在感应式无线接收机中，电源路径可以快速重新编程为LDO或PSW模式，或者可以在飞行中重新编程为SMPS或PSW模式。 在谐振或多模式无线接收器中，电源路径可以在飞行中重新编程为SMPS或PSW模式。 此外，为了实现高功率传输效率性能，使用N沟道MOSFET作为其通过器件比P沟道MOSFET通过器件具有更好的效率和更小的管芯面积。

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