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：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：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：US10963764B2

公开(公告)日：2021-03-30

申请号：US16510498

申请日：2019-07-12

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：US10554061B2

公开(公告)日：2020-02-04

申请号：US15828158

申请日：2017-11-30

Applicant: Integrated Device Technology, Inc.

Inventor： Rui Liu ,  Gustavo James Mehas ,  Lijie Zhao ,  Tae Kwang Park ,  Zhitong Guo

IPC: H02J7/00

Abstract: A charging system that includes a switching control circuit coupled to four series-coupled MOSFET transistors; a flying capacitor coupled across two of the four series-coupled MOSFET transistors; and node between the two of the four series coupled transistors that couples to an output inductor to form a buck regulator is presented. Embodiments of the charging system can have increased efficiency, can reduce the size and inductance of the output inductor, and can be produced with a low voltage process.

公开(公告)号：US10360485B2

公开(公告)日：2019-07-23

申请号：US15688682

申请日：2017-08-28

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：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.