公开(公告)号：US10705497B2

公开(公告)日：2020-07-07

申请号：US15996516

申请日：2018-06-03

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Wei-Hsu Chang ,  Jung-Won Kim

IPC: G05B19/042 ,  G01R31/08 ,  G01V3/02 ,  G01R31/40 ,  G01R31/58 ,  G01R31/66

Abstract: A power system capable of detecting a foreign object, includes a power supplier side, a power receiver side, and a cable. The power supplier side includes a power converter, a foreign object detection and control circuit, and a pull-up circuit. The power converter supplies a supply voltage to the power receiver side according to a power supply control signal. The foreign object detection and control circuit generates the power supply control signal for controlling the power converter, and generates a foreign object detection and control signal according to a voltage at a supplier transmission node of the power supplier side, for determining whether a foreign object exists in the power receiver side. The pull-up circuit adjusts a level of a supply current which is supplied from the supplier transmission node to the power receiver side.

公开(公告)号：US20180373216A1

公开(公告)日：2018-12-27

申请号：US15996516

申请日：2018-06-03

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Wei-Hsu Chang ,  Jung-Won Kim

IPC: G05B19/042 ,  G01V3/02 ,  G01R31/08

Abstract: A power system capable of detecting a foreign object, includes a power supplier side, a power receiver side, and a cable. The power supplier side includes a power converter, a foreign object detection and control circuit, and a pull-up circuit. The power converter supplies a supply voltage to the power receiver side according to a power supply control signal. The foreign object detection and control circuit generates the power supply control signal for controlling the power converter, and generates a foreign object detection and control signal according to a voltage at a supplier transmission node of the power supplier side, for determining whether a foreign object exists in the power receiver side. The pull-up circuit adjusts a level of a supply current which is supplied from the supplier transmission node to the power receiver side.

公开(公告)号：US11137733B2

公开(公告)日：2021-10-05

申请号：US16882500

申请日：2020-05-24

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Wei-Hsu Chang ,  Jung-Won Kim

IPC: G05B19/042 ,  G01R31/08 ,  G01R31/58 ,  G01R31/66 ,  G05B1/02 ,  G01V3/02 ,  G01R31/40

Abstract: A power system capable of detecting a foreign object, includes a power supplier side, a power receiver side, and a cable. The power supplier side includes a power converter, a foreign object detection and control circuit, and a pull-up circuit. The power converter supplies a supply voltage to the power receiver side according to a power supply control signal. The foreign object detection and control circuit generates the power supply control signal for controlling the power converter, and generates a foreign object detection and control signal according to a voltage at a supplier transmission node of the power supplier side, for determining whether a foreign object exists in the power receiver side. The pull-up circuit adjusts a level of a supply current which is supplied from the supplier transmission node to the power receiver side.

公开(公告)号：US20200285212A1

公开(公告)日：2020-09-10

申请号：US16882500

申请日：2020-05-24

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Wei-Hsu Chang ,  Jung-Won Kim

IPC: G05B19/042 ,  G01R31/08 ,  G01V3/02 ,  G01R31/40 ,  G01R31/58 ,  G01R31/66

Abstract: A power system capable of detecting a foreign object, includes a power supplier side, a power receiver side, and a cable. The power supplier side includes a power converter, a foreign object detection and control circuit, and a pull-up circuit. The power converter supplies a supply voltage to the power receiver side according to a power supply control signal. The foreign object detection and control circuit generates the power supply control signal for controlling the power converter, and generates a foreign object detection and control signal according to a voltage at a supplier transmission node of the power supplier side, for determining whether a foreign object exists in the power receiver side. The pull-up circuit adjusts a level of a supply current which is supplied from the supplier transmission node to the power receiver side.