METHOD AND CIRCUITRY FOR CONTROLLING A TRANSMITTER AND A RECEIVER OF A WIRELESS POWER TRANSFER SYSTEM

    公开(公告)号:US20240186832A1

    公开(公告)日:2024-06-06

    申请号:US18525986

    申请日:2023-12-01

    CPC classification number: H02J50/12

    Abstract: Method and circuitry for controlling a transmitter and a receiver of a wireless power transfer system. There is provided transmitter control circuitry for controlling a duty cycle of an inverter of a transmitter of a wireless power transfer system based on detection of a load signal at the transmitter. There is further provided receiver control circuitry for controlling operation of a receiver of a wireless power transfer system, the circuitry modifying of the load at the input or output of a rectifier of a receiver of a wireless power transfer system to vary a load signal at the receiver. The transmitter control circuitry may control the duty cycle of the inverter based on detection of the load signal from the receiver.

    OVERVOLTAGE/CURRENT DETECTION AND PROTECTION IN A WIRELESS POWER SYSTEM

    公开(公告)号:US20250038513A1

    公开(公告)日:2025-01-30

    申请号:US18782157

    申请日:2024-07-24

    Abstract: An overcurrent detection circuit for use in a transmitter of a wireless power transfer system is provided. The transmitter comprises a transmitter element for generating a field to transfer power to a receiver of a wireless power transfer system. The circuit is adapted to shut down a transmitter of a wireless power transfer system in response to a detected short circuit event. An overvoltage protection circuit for use in a receiver of a wireless power transfer system is also provided. The receiver comprises a receiver element for extracting power from a field generated by a transmitter of a wireless power transfer system, and a switching element electrically connected to the receiver element. The overvoltage protection circuit is adapted to electrically ground the switching element based on an overvoltage event.

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