公开(公告)号：US12051876B2

公开(公告)日：2024-07-30

申请号：US17020875

申请日：2020-09-15

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Andrew James Howlett ,  Gordon Russell

IPC: G06F1/32 ,  G06F1/3231 ,  G06F1/3296 ,  H01R13/66 ,  H02H3/20 ,  H02H9/04 ,  H04M19/00

CPC classification number: H01R13/6683 ,  G06F1/3231 ,  G06F1/3296 ,  H01R13/6666 ,  H01R13/6675 ,  H01R13/6691 ,  H02H3/202 ,  H02H9/04 ,  H04M19/00 ,  H01R2201/06

Abstract: This application relates to monitoring of electronic devices (100) and in particular to methods and apparatus for the detection and recording of an electrical overstress applied to a connector (101, 102) of the device. The apparatus describes an integrated circuit (103, 105) of the host device having a first set of one or more circuit contacts (201, 203, 204, 205) for connection to a connector (101) of a host electronic device. The circuit has an electrical overstress monitor (106, 106a) for detecting and recording an electrical overstress comprising a voltage exceeding a predetermined parameter applied to at least one of said first set of circuit contacts. The electrical overstress monitor (106) may have an overvoltage detector (205) and may have a memory (206) for recording the occurrence of an overvoltage and/or a communication module (207) for communicating with other components of the host device in the event of an electrical overstress.

公开(公告)号：US11705900B2

公开(公告)日：2023-07-18

申请号：US17159786

申请日：2021-01-27

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Andrew Buist ,  Mark McCloy-Stevens ,  Dave Smith ,  Gordon Russell ,  Huy Binh Le

IPC: H03K17/0814 ,  H02H3/18

CPC classification number: H03K17/08142 ,  H02H3/18

Abstract: Circuitry for controlling current between a load and a power supply, the circuitry comprising: an output stage comprising: an input node configured to be coupled to the power supply; and an output node configured to be coupled to the load; and one or more control nodes for controlling a conduction path between the input node and the output node; and protection circuitry coupled to the one or more control nodes, the protection circuitry configured to break the conduction path between the input node and the output node when a load voltage at the output node exceeds a supply voltage at the input node, wherein the protection circuitry comprises: an active protection circuit configured to break the conduction path when the supply voltage exceeds an operational threshold of the active protection circuit; and a passive protection circuit configured to break the conduction path when the supply voltage is below an operation threshold of the active protection circuit.

公开(公告)号：US10811826B2

公开(公告)日：2020-10-20

申请号：US15591764

申请日：2017-05-10

Applicant: Cirrus Logic International Semiconductor Ltd.

Inventor： Andrew James Howlett ,  Gordon Russell

IPC: H01R13/66 ,  G06F1/32 ,  H02H3/20 ,  H04M19/00 ,  H02H9/04 ,  G06F1/3231 ,  G06F1/3296

Abstract: This application relates to monitoring of electronic devices (100) and in particular to methods and apparatus for the detection and recording of an electrical overstress applied to a connector (101, 102) of the device. The apparatus describes an integrated circuit integrated circuit (103, 105) of the host device having a first set of one or more circuit contacts (201, 203, 204, 205) for connection to a connector (101) of a host electronic device. The circuit has an electrical overstress monitor (106, 106a) for detecting and recording an electrical overstress comprising a voltage exceeding a predetermined parameter applied to at least one of said first set of circuit contacts. The electrical overstress monitor (106) may have an overvoltage detector (205) and may have a memory (206) for recording the occurrence of an overvoltage and/or a communication module (207) for communicating with other components of the host device in the event of an electrical overstress.