公开(公告)号：US11303154B2

公开(公告)日：2022-04-12

申请号：US16368791

申请日：2019-03-28

Applicant: Integrated Device Technology, Inc.

Inventor： Tao Qi ,  Gustavo Mehas ,  Rui Liu

IPC: H02J50/10 ,  H04B5/00 ,  H02M7/219 ,  H02J7/02

Abstract: According to some embodiments, a magnetic secured transmission (MST) driver is provided. The MST driver includes a full-bridge switching circuit that includes a first half-bridge coupled to a first node and a second half-bridge coupled to a second node; and a control circuit coupled to drive the first half-bridge according to MST input data and to drive the second half bridge according to a high-frequency pulse width modulation (PWM) signal.

公开(公告)号：US11216601B2

公开(公告)日：2022-01-04

申请号：US16132158

申请日：2018-09-14

Applicant: Integrated Device Technology, Inc.

Inventor： Gustavo Mehas ,  Tao Qi

IPC: H01F38/14 ,  G06F30/20 ,  H04B5/00 ,  H02J50/10 ,  H01F27/255 ,  H01F27/36 ,  H01F27/24 ,  G06F111/10 ,  G06F119/06

Abstract: In accordance with aspects of the present invention, a coil arrangement is presented. A coil arrangement according to some embodiments includes at least one coil positioned to provide a magnetic field in a first area and configured to reduce the magnetic field in a second area outside of the first area. In some embodiments, the at least one coil includes a bent solenoid oriented in the X-Y plane, the bent solenoid localizing magnetic field flux at ends of the bent solenoid. In some embodiments, the bent solenoid can include end caps to further direct the magnetic flux. In some embodiments, the at least one coil includes a flattened solenoid with end caps to direct the magnetic flux. In some embodiments, the coil arrangement is a configuration of multiple coils.

公开(公告)号：US11005306B2

公开(公告)日：2021-05-11

申请号：US16368790

申请日：2019-03-28

Applicant: Integrated Device Technology, Inc.

Inventor： Tao Qi ,  Gustavo Mehas ,  Chan Young Jeong ,  Xinyun Gu ,  Nicholaus Smith ,  Amit D. Bavisi ,  Daryl Sugasawara ,  Aihua Lee

IPC: H02J50/70 ,  H02J7/02 ,  H02J50/10

Abstract: Embodiments described herein provide a wireless power transmitter that dynamically adjusts the deadtime to reduce power loss. Specifically, the wireless power transmitter includes a transistor circuit for switching a first voltage at a first node and a second voltage at a second node, and a LC circuit coupled between the first node and the second node. The wireless power transmitter further includes a controller coupled to the transistor circuit. The controller is configured to determine whether either of the first voltage and the second voltage is negative during a deadtime of switching. The controller is configured to increment or decrement the deadtime by an adjustment amount depending on whether negative voltage is detected.

公开(公告)号：US10784044B2

公开(公告)日：2020-09-22

申请号：US16376955

申请日：2019-04-05

Applicant: Integrated Device Technology, Inc.

Inventor： Tao Qi ,  Gustavo Mehas ,  Chan Young Jeong ,  Xinyun Gu ,  Nicholaus Wayne Smith ,  Amit D. Bavisi ,  Daryl Jay Sugasawara ,  Aihua Lee ,  Tianze Kan

IPC: H01F38/14 ,  H01F27/28 ,  H01F27/00 ,  H01F5/00 ,  H02J50/10 ,  H01F27/29

Abstract: In accordance with embodiments of the present invention, a coil design for the transmission of wireless power. In some embodiments, the coil can include a winding with one or more turns of conductive traces mounted on a substrate, wherein the one or more turns include characteristics that enhance operation of the coil. In some embodiments, the winding includes a transmit coil and a receive coil, each coupled to terminals that provide for a transmit functionality and a receive functionality. In some embodiments, the traces are varied in width and/or thickness in order to optimize the inductance and the coil resistance. In some embodiments, parameters of a control circuit coupled to the coil to affect a transmit functionality or a receive functionality can be optimized.