Transistor switches with electrostatic discharge protection

    公开(公告)号:US12021076B2

    公开(公告)日:2024-06-25

    申请号:US17450179

    申请日:2021-10-07

    Applicant: NXP B.V.

    CPC classification number: H01L27/0266 H01L27/0255

    Abstract: Field effect transistors in an electronic switching device are provided with electrostatic discharge (ESD) protection elements electrically coupled to a first current terminal of each transistor (e.g., a source of each transistor or a drain of each transistor), allowing the electronic switching device to withstand ESD-induced currents without damage to the switching device.

    INTEGRATED CIRCUIT
    2.
    发明申请

    公开(公告)号:US20220359318A1

    公开(公告)日:2022-11-10

    申请号:US17661729

    申请日:2022-05-02

    Applicant: NXP B.V.

    Abstract: An integrated circuit, IC, comprising one or more DC blocking modules connected to a respective input/output, IO, pin of the IC, each DC blocking module comprising: a capacitor having a first terminal connected to the respective IO pin and a second terminal connected to a node of the circuitry of the IC; and an electrostatic discharge, ESD, protection circuit connected in parallel to the capacitor, the ESD protection circuit comprising: a conduction path connected between the first terminal of the capacitor and the second terminal of the capacitor; and a control terminal configured to receive a control signal to switch the ESD protection circuit between: an operational mode in which the conduction path is in a non-conducting state and provides ESD protection to the capacitor; and a test mode in which the conduction path is in a conducting state and short circuits the capacitor.

    ESD CIRCUIT WITH GGNMOS TRANSISTORS HAVING MULTIPLE BODY CONTACT REGIONS

    公开(公告)号:US20240405013A1

    公开(公告)日:2024-12-05

    申请号:US18325503

    申请日:2023-05-30

    Applicant: NXP B.V.

    Abstract: An electrostatic discharge circuit includes two or more GGNMOS transistors where each transistor includes two types of body contact regions. Body contact regions of one type are non substrate isolated from body contact regions of the other type. A body contact region of one type is electrically coupled to the source region of its transistor and a body contact region of the other type is electrically connected to at least one other body contact region of the same type of another GGNMOS transistor.

    ELECTROSTATIC DISCHARGE (ESD) PROTECTION DEVICE

    公开(公告)号:US20220209527A1

    公开(公告)日:2022-06-30

    申请号:US17332619

    申请日:2021-05-27

    Applicant: NXP B.V.

    Abstract: Embodiments of an ESD protection device are described. In an embodiment, an ESD protection device includes a first voltage rail electrically connected to a first node, a second voltage rail electrically connected to a second node, and ESD cells connected between the first and second voltage rails and configured to shunt current in response to an ESD pulse received between the first and second nodes. Each of the ESD cells includes clamp circuits electrically connected to the second voltage rail, ballast resistors connected between the first voltage rail and the clamp circuits, where at least some of the ballast resistors are electrically connected to a third voltage rail, a driver circuit connected between the second and third voltage rails and configured to generate a driver signal, and an output stage configured to generate an output signal in response to the driver signal.

    Electrostatic discharge (ESD) protection device and method for operating an ESD protection device

    公开(公告)号:US10366974B2

    公开(公告)日:2019-07-30

    申请号:US15595068

    申请日:2017-05-15

    Applicant: NXP B.V.

    Abstract: Embodiments of an electrostatic discharge (ESD) protection device and a method of operating an ESD protection device are described. In one embodiment, an ESD protection device includes a bipolar transistor device connected between a first node and a second node, a series protection device connected in series with the bipolar transistor device, and a diode device connected between the second node and a third node. A drain terminal of an NMOS device to be protected is connectable to the first node. A body of the NMOS device to be protected is connectable to the second node. A source terminal of the NMOS device to be protected is connectable to the third node. The diode device and the bipolar transistor device are configured to form a parasitic silicon controlled rectifier. Other embodiments are also described.

    Electrostatic discharge (ESD) protection device

    公开(公告)号:US11532936B2

    公开(公告)日:2022-12-20

    申请号:US17332619

    申请日:2021-05-27

    Applicant: NXP B.V.

    Abstract: Embodiments of an ESD protection device are described. In an embodiment, an ESD protection device includes a first voltage rail electrically connected to a first node, a second voltage rail electrically connected to a second node, and ESD cells connected between the first and second voltage rails and configured to shunt current in response to an ESD pulse received between the first and second nodes. Each of the ESD cells includes clamp circuits electrically connected to the second voltage rail, ballast resistors connected between the first voltage rail and the clamp circuits, where at least some of the ballast resistors are electrically connected to a third voltage rail, a driver circuit connected between the second and third voltage rails and configured to generate a driver signal, and an output stage configured to generate an output signal in response to the driver signal.

    APPARATUS FOR SUPPRESSING PARASITIC LEAKAGE FROM I/O-PINS TO SUBSTRATE IN FLOATING-RAIL ESD PROTECTION NETWORKS

    公开(公告)号:US20210143146A1

    公开(公告)日:2021-05-13

    申请号:US16677221

    申请日:2019-11-07

    Applicant: NXP B.V.

    Inventor: Gijs Jan de Raad

    Abstract: An apparatus for suppressing parasitic leakage from I/O pins to substrate in floating rail based ESD protection networks is disclosed. In one embodiment, the apparatus includes an integrated circuit (IC) including a conductor, a pin, a first diode coupled between the pin and the conductor, and a first circuit coupled between the conductor and the pin. The first circuit is configured to selectively couple the pin to the conductor based on a voltage on the pin and a voltage on the conductor.

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