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    Wireless Power Receiver with Programmable Power Path
    1.
    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：US20160299521A1

    公开(公告)日：2016-10-13

    申请号：US15037051

    申请日：2015-01-08

    申请人： Hasnani AKRAM ,  Yung-Chih YEN ,  Patrick Stanley RIEHL ,  Anand SATYAMOORTHY ,  MEDIATEK SINGAPORE PTE. LTD.

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

    IPC分类号： G05F1/575 ,  H02J50/12 ,  H02M3/07 ,  H02M7/217

    CPC分类号： 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

    摘要： 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.

    摘要翻译： 仅使用n沟道器件的同步整流器，其中低侧开关使用低端比较器和高侧开关有效地交叉耦合，执行精确的零电压切换（ZVS）比较。 每个引导域的充电路径通过低端开关完成，每个开关每个半周期不依赖于负载。 该方案提供整流器效率增益，因为a）每个引导域接收最大充电时间，b）通过开关而不是二极管发生充电。 这两个因素都能确保自举域充满电，从而减少整流开关的导通损耗。 此外，可以通过软件来调整设置以优化整流器的电阻和电容损耗。 使用模块温度和工作频率的数据，软件可以创建一个反馈回路，动态调整整流器设置，以达到最佳的效率。

    Wireless power transfer in-band communication system
    3.
    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

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

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

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

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

    摘要： 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).

    摘要翻译： 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 TRANSFER IN-BAND COMMUNICATION SYSTEM
    4.
    发明申请
    WIRELESS POWER TRANSFER IN-BAND COMMUNICATION SYSTEM 有权
    无线电力传输带内通信系统

    公开(公告)号：US20140314170A1

    公开(公告)日：2014-10-23

    申请号：US14356607

    申请日：2013-10-25

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

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

    IPC分类号： H04L1/00 ,  H04L25/49

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

    摘要： 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).

    摘要翻译： 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 TRANSFER IN-BAND COMMUNICATION SYSTEM
    7.
    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

    申请人： MediaTek Singapore Pte. Ltd.

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

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

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

    摘要： 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.

    摘要翻译： 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
    8.
    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

    申请人： MediaTek Singapore Pte. Ltd.

    发明人： Anand Satyamoorthy ,  Hasnain Akram ,  Patrick Stanley Riehl

    IPC分类号： H01F38/14

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

    摘要： 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.

    摘要翻译： 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。