公开(公告)号：US20220173617A1

公开(公告)日：2022-06-02

申请号：US17107161

申请日：2020-11-30

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Wenhe Zhao ,  Robin Tanzania

IPC: H02J50/12 ,  H02M7/5387 ,  H02J7/02 ,  H02M7/217

Abstract: A method for operating a wireless charging transmitter includes switching, by the wireless charging transmitter, an operating mode of a full bridge inverter of the wireless charging transmitter from a first mode to a second mode; and changing, by the wireless charging transmitter, an operating point of the wireless charging transmitter from a first operating point associated with the first mode to a second operating point associated with the second mode, the second operating point being selected to dampen a change in a rectifier voltage of a wireless charging receiver inductively coupled to the wireless charging transmitter.

公开(公告)号：US11942792B2

公开(公告)日：2024-03-26

申请号：US17107161

申请日：2020-11-30

Applicant: STMicroelectronics Asia Pacific Pte Ltd.

Inventor： Wenhe Zhao ,  Robin Tanzania

IPC: H02J50/12 ,  H02J7/02 ,  H02M7/217 ,  H02M7/5387

CPC classification number: H02J50/12 ,  H02J7/02 ,  H02M7/217 ,  H02M7/5387

Abstract: A method for operating a wireless charging transmitter includes switching, by the wireless charging transmitter, an operating mode of a full bridge inverter of the wireless charging transmitter from a first mode to a second mode; and changing, by the wireless charging transmitter, an operating point of the wireless charging transmitter from a first operating point associated with the first mode to a second operating point associated with the second mode, the second operating point being selected to dampen a change in a rectifier voltage of a wireless charging receiver inductively coupled to the wireless charging transmitter.

公开(公告)号：US11496185B2

公开(公告)日：2022-11-08

申请号：US17024270

申请日：2020-09-17

Applicant: STMicroelectronics Asia Pacific Pte Ltd. ,  STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Wenhe Zhao ,  Jiasheng Wang

IPC: H02J50/80 ,  H04B5/00 ,  H02J50/12

Abstract: A method for modulating a signal including operating a circuit in a first arrangement during a first operating interval and switching the circuit between the first arrangement and a second arrangement during a first modulation interval to vary a load on the circuit to produce a first amplitude shift keying (ASK) signal. The method further includes detecting a voltage on the circuit crossing a threshold level and operating the circuit in the second arrangement during a second operating interval. The method also includes switching the circuit between the second arrangement and the first arrangement during a second modulation interval to vary the load on the circuit to produce a second ASK signal.

公开(公告)号：US20220085848A1

公开(公告)日：2022-03-17

申请号：US17024270

申请日：2020-09-17

Applicant: STMicroelectronics Asia Pacific Pte Ltd. ,  STMicroelectronics (Shenzhen) R&D Co. Ltd.

Inventor： Wenhe Zhao ,  Jiasheng Wang

IPC: H04B5/00 ,  H02J50/12 ,  H02J50/80

Abstract: A method for modulating a signal including operating a circuit in a first arrangement during a first operating interval and switching the circuit between the first arrangement and a second arrangement during a first modulation interval to vary a load on the circuit to produce a first amplitude shift keying (ASK) signal. The method further includes detecting a voltage on the circuit crossing a threshold level and operating the circuit in the second arrangement during a second operating interval. The method also includes switching the circuit between the second arrangement and the first arrangement during a second modulation interval to vary the load on the circuit to produce a second ASK signal.