公开(公告)号：US10699175B2

公开(公告)日：2020-06-30

申请号：US16367189

申请日：2019-03-27

Applicant: Integrated Device Technology, Inc.

Inventor： Rui Liu ,  Tao Qi ,  Lijie Zhao ,  Gustavo James Mehas ,  Tae Kwang Park ,  Zhitong Guo ,  Siqiang Fan

IPC: G06K7/08 ,  G06K19/06 ,  G06K7/10 ,  G06K19/077 ,  G06Q20/32

Abstract: According to another embodiment, a system includes a driver circuit that drives a first output and a second output; a coil coupled between the first output and the second output such that the driver circuit drives current through the coil in response to control signals; and a programmable slew circuit coupled to the driver circuit. In some embodiments, a switch is coupled between the first output and the coil. In some embodiments an over-voltage protection circuit is coupled to protect the driver circuit.

公开(公告)号：US10680466B2

公开(公告)日：2020-06-09

申请号：US15923631

申请日：2018-03-16

Applicant: INTEGRATED DEVICE TECHNOLOGY, INC.

Inventor： Rui Liu ,  Tao Qi

IPC: H02J50/12 ,  H01F27/29 ,  H01F38/14 ,  H02J7/02

Abstract: Circuits and systems for wireless power transmission include a driver circuit having first and second power terminals, a tapped coil, a first resonant tank, and a second resonant tank. The tapped coil includes a first, second, and third coil terminals, a first coil connected between the first and second coil terminals, and a second coil connected between the second and third coil terminals. The first resonant tank is coupled between the first and second power terminals. The second resonant tank is coupled between the first and second power terminals. The driver circuit is configured to provide and/or receive modulated power across the first and second power terminals and operate the device by switching between a first mode wherein the first resonant tank uses the first coil and a second mode wherein the second resonant tank uses the first coil and the second coil.