公开(公告)号：US11218347B2

公开(公告)日：2022-01-04

申请号：US16891619

申请日：2020-06-03

Applicant: Renesas Electronics America Inc.

Inventor： Gustavo Mehas ,  Nicholaus Smith ,  Detelin Martchovsky

IPC: H02J50/12 ,  H04L27/04

Abstract: In accordance with some embodiments of the present invention, a wireless power receiver that ramps an ASK impedance is presented. A method of amplitude shift key (ASK) modulation in a wireless power receiver includes initiating transition of an ASK impedance from a first state to a second state, the ASK impedance being coupled to a resonant circuit that includes a wireless power receive coil that receives a time-varying magnetic field; transitioning the ASK impedance from the first state to the second state according to the transition over a plurality of switching cycles of the time-varying magnetic field; and holding the second state.

公开(公告)号：US12272968B2

公开(公告)日：2025-04-08

申请号：US16845804

申请日：2020-04-10

Applicant: Renesas Electronics America Inc.

Inventor： Changjae Kim ,  Detelin Martchovsky ,  Amit Bavisi ,  Sophia Yi

IPC: H02J50/80 ,  H02J50/12 ,  H04B5/72 ,  H04B5/79

Abstract: A wireless power system is disclosed that allows data to be read and written into a wireless power transmission system of a wireless power transmitter through near-field communications (NFC). A method of exchanging data with a power transmission system in the wireless power transmitter and a graphical user interface coupled to a wireless power receiver in communications with the wireless power transmitter includes communicating a data packet with the power transmission system through a near-field communications (NFC) link between a wireless power receiver and the wireless power transmitter; receiving the data packet in the power transmission system; and performing a task defined by a header command code in the data packet.

公开(公告)号：US20210385114A1

公开(公告)日：2021-12-09

申请号：US16891619

申请日：2020-06-03

Applicant: Renesas Electronics America Inc.

Inventor： Gustavo Mehas ,  Nicholaus Smith ,  Detelin Martchovsky

IPC: H04L27/04 ,  H02J50/12

Abstract: In accordance with some embodiments of the present invention, a wireless power receiver that ramps an ASK impedance is presented. A method of amplitude shift key (ASK) modulation in a wireless power receiver includes initiating transition of an ASK impedance from a first state to a second state, the ASK impedance being coupled to a resonant circuit that includes a wireless power receive coil that receives a time-varying magnetic field; transitioning the ASK impedance from the first state to the second state according to the transition over a plurality of switching cycles of the time-varying magnetic field; and holding the second state.