公开(公告)号：US20190341770A1

公开(公告)日：2019-11-07

申请号：US16354129

申请日：2019-03-14

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Shung-Tsung Chen ,  Yi-Syue Jhu ,  Chieh-Min Lo ,  Tsung-Han Tsai

IPC: H02H7/20 ,  H02H1/00 ,  G01V3/04

Abstract: A power supply system includes a power supplier circuit and a power receiver circuit. The power supplier circuit supplies a power via a communication interface compatible with a first communication interface specification or a second communication interface specification. The first communication interface specification includes a delay threshold. After the power supplier circuit is coupled to the power receiver circuit, the power supplier circuit supplies the power after a first delay period. The power receiver circuit confirms whether the power supplier circuit is coupled to the power receiver circuit via a coupling confirmation step according to the first communication interface specification. The power receiver circuit confirms whether the power supplier circuit is compatible with the first communication interface specification or the second communication interface specification according to whether the first delay period is greater than the delay threshold.

公开(公告)号：US10476257B2

公开(公告)日：2019-11-12

申请号：US15639656

申请日：2017-06-30

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Chieh-Min Lo ,  Yi-Syue Jhu

IPC: H02H5/00 ,  H02H5/08 ,  G01N27/22 ,  H01R13/66 ,  H01R24/60 ,  H01R107/00

Abstract: An interface control circuit comprises an interface signal transceiver circuit coupled with an interface which includes at least one interface pin for transmitting and/or receiving an interface signal through the interface, and a protection circuit for generating a protection control signal according to a capacitance of a first interface pin. During a predetermined detection time period starting from an attaching event, the protection circuit senses the capacitance of the first interface pin, and determines that there is an electrolytic substance existing and coupled with the first interface pin when the capacitance is larger than a predetermined first capacitance threshold. The protection control signal triggers the interface signal transceiver circuit to execute a protection operation. The interface includes the first interface pin and the second interface pin, and the first interface pin and the second interface pin can be one same pin or separate different pins.

公开(公告)号：US20180269676A1

公开(公告)日：2018-09-20

申请号：US15639656

申请日：2017-06-30

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Chieh-Min Lo ,  Yi-Syue Jhu

IPC: H02H5/08 ,  H01R24/60 ,  G01N27/22

CPC classification number: H02H5/083 ,  G01N27/226 ,  H01R13/6683 ,  H01R24/60 ,  H01R2107/00 ,  H01R2201/20

Abstract: An interface control circuit comprises an interface signal transceiver circuit coupled with an interface which includes at least one interface pin for transmitting and/or receiving an interface signal through the interface, and a protection circuit for generating a protection control signal according to a capacitance of a first interface pin. During a predetermined detection time period starting from an attaching event, the protection circuit senses the capacitance of the first interface pin, and determines that there is an electrolytic substance existing and coupled with the first interface pin when the capacitance is larger than a predetermined first capacitance threshold. The protection control signal triggers the interface signal transceiver circuit to execute a protection operation. The interface includes the first interface pin and the second interface pin, and the first interface pin and the second interface pin can be one same pin or separate different pins.

公开(公告)号：US10095258B1

公开(公告)日：2018-10-09

申请号：US15680011

申请日：2017-08-17

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Chieh-Min Lo ,  Yi-Syue Jhu

IPC: H03K3/00 ,  G05F3/02 ,  G01R17/02

Abstract: An operation mode determination circuit for sensing a setting resistance between a setting node and a reference voltage or a ground to determine an operation mode, comprises: a pull-up power circuit, for generating a pull-up power onto the setting node, and a floating detection circuit. The pull-up power circuit adjusts the pull-up power at a first power level, and triggers an low power detach detection procedure after a predetermined first time period, wherein the pull-up power is adjusted at a second power level which is less than the first power level to an extent that an electrolysis effect is negligible when an electrolytic substance exists and is coupled to the setting node. The floating detection circuit triggers the operation mode detection procedure when the voltage on the setting node is higher than a first voltage threshold in the low power detach detection procedure.

公开(公告)号：US20180267567A1

公开(公告)日：2018-09-20

申请号：US15680011

申请日：2017-08-17

Applicant: RICHTEK TECHNOLOGY CORPORATION

Inventor： Chieh-Min Lo ,  Yi-Syue Jhu

IPC: G05F3/02 ,  G01R17/02

Abstract: An operation mode determination circuit for sensing a setting resistance between a setting node and a reference voltage or a ground to determine an operation mode, comprises: a pull-up power circuit, for generating a pull-up power onto the setting node, and a floating detection circuit. The pull-up power circuit adjusts the pull-up power at a first power level, and triggers an low power detach detection procedure after a predetermined first time period, wherein the pull-up power is adjusted at a second power level which is less than the first power level to an extent that an electrolysis effect is negligible when an electrolytic substance exists and is coupled to the setting node. The floating detection circuit triggers the operation mode detection procedure when the voltage on the setting node is higher than a first voltage threshold in the low power detach detection procedure.