公开(公告)号：US11527920B2

公开(公告)日：2022-12-13

申请号：US16403419

申请日：2019-05-03

Applicant: Integrated Device Technology, Inc.

Inventor： Gustavo James Mehas ,  Amit D. Bavisi ,  Nicholaus Wayne Smith

IPC: H02J50/60 ,  H02J7/02 ,  H02J50/12 ,  G01V3/10

Abstract: Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.

公开(公告)号：US11418067B2

公开(公告)日：2022-08-16

申请号：US16586212

申请日：2019-09-27

Applicant: Integrated Device Technology, Inc.

Inventor： Gustavo James Mehas ,  Amit D. Bavisi ,  Nicholaus Wayne Smith

IPC: H02J50/60 ,  H02J50/12 ,  H02J50/40 ,  G01V3/10

Abstract: Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.

公开(公告)号：US11240942B2

公开(公告)日：2022-02-01

申请号：US16385813

申请日：2019-04-16

Applicant: Integrated Device Technology, Inc.

Inventor： Nicholaus Wayne Smith ,  Tao Qi ,  Amit D. Bavisi ,  Changjae Kim

IPC: H05K7/20 ,  H02J7/02 ,  H02J7/00 ,  H02J50/10 ,  H01F38/14 ,  H02J50/90 ,  H02J50/60

Abstract: In accordance with some embodiments of the present invention, an ion cooling engine (ICE) controlled by a transmitting or receiving device cools a transmit or receive coil and possibly other parts of a wireless power transmitter or receiver system. In some embodiments, the ICE includes a low-voltage circuit controlled by the transmitting device and coupled to a high voltage circuit that generates the airflow. Other features are also provided.

公开(公告)号：US20200169123A1

公开(公告)日：2020-05-28

申请号：US16403419

申请日：2019-05-03

Applicant: Integrated Device Technology, Inc.

Inventor： Gustavo James Mehas ,  Amit D. Bavisi ,  Nicholaus Wayne Smith

IPC: H02J50/60 ,  H02J50/12 ,  H02J7/02 ,  G01V3/10

Abstract: Embodiments described herein provide foreign object detection based on coil current sensing. The transmitter power loss is computed directly based on the coil current, in conjunction with, or in place of the conventional computation based on transmitter input current. The enhanced precision of the computer power loss can be used to more accurately detect a foreign object near the transmitter coil during a wireless power transfer.

公开(公告)号：US11374441B2

公开(公告)日：2022-06-28

申请号：US16368761

申请日：2019-03-28

Applicant: Integrated Device Technology, Inc.

Inventor： Nicholaus Wayne Smith ,  Chan Young Jeong

IPC: H02J50/90 ,  H02J7/02 ,  H02J50/12 ,  H02M7/12

Abstract: In accordance with some embodiments of the present invention, a method of controlling and correcting negative modulation is presented. In some embodiments, a method of operating a receiver includes detecting a negative modulation and adjusting one or more parameters to force a transition to a positive modulation. The parameters can be the output voltage Vout, the transmitter input voltage Vin, or receiver structural elements.

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.