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    Multipath wide bandwidth current sensor
    1.
    发明授权
    Multipath wide bandwidth current sensor 有权

    公开(公告)号：US11366141B1

    公开(公告)日：2022-06-21

    申请号：US17160573

    申请日：2021-01-28

    Applicant: Allegro MicroSystems, LLC

    Inventor： Steven Daubert ,  Sina Haji Alizad ,  Srujan Shivanakere ,  Maxwell McNally ,  Alexander Latham

    IPC: G01R19/14 ,  G01R19/25

    Abstract: A current sensor includes a lead frame having a plurality of leads, at least two of which form a current conductor configured to carry a current that generates a magnetic field and a substrate having first and second opposing surfaces, the first surface proximate to said current conductor and the second surface distal from the current conductor. A first magnetic field transducer is disposed on the substrate and a first coil is disposed on the substrate adjacent to the first magnetic field transducer, wherein the first magnetic field transducer and the first coil are positioned on a first side of the current conductor. A second magnetic field transducer is disposed on the substrate and a second coil is disposed on the substrate adjacent to the second magnetic field transducer, wherein the second magnetic field transducer and the second coil are positioned on a second side of the current conductor.

    Magnetic sensing having hall plate routing to reduce inductive coupling
    4.
    发明授权
    Magnetic sensing having hall plate routing to reduce inductive coupling 有权

    公开(公告)号：US12140646B2

    公开(公告)日：2024-11-12

    申请号：US18164676

    申请日：2023-02-06

    Applicant: Allegro MicroSystems, LLC

    Inventor： Tyler Daigle ,  Srujan Shivanakere ,  Maxwell McNally ,  Alec Smith ,  Steven Daubert

    IPC: G01R33/07 ,  H10N52/01

    Abstract: Methods and apparatus for canceling inductive coupling in a magnetic field sensing device having one or more Hall elements. A device can include a Hall element having a first pair of first and second voltage sensing terminals at diametrically opposed locations on the Hall element, and a second pair of third and fourth voltage sensing terminals diametrically opposed locations on the Hall element. A first mirror conductive path extends around a perimeter of the Hall element in a first direction a second mirror conductive path extends around the perimeter of the Hall element in a second direction so that the first and second mirror conductive paths are on opposite sides of the Hall element and are equal and opposite to cancel inductive coupling.

    MAGNETIC SENSING HAVING HALL PLATE ROUTING TO REDUCE INDUCTIVE COUPLING
    6.
    发明公开
    MAGNETIC SENSING HAVING HALL PLATE ROUTING TO REDUCE INDUCTIVE COUPLING 审中-公开

    公开(公告)号：US20240264248A1

    公开(公告)日：2024-08-08

    申请号：US18164676

    申请日：2023-02-06

    Applicant: Allegro MicroSystems, LLC

    Inventor： Tyler Daigle ,  Srujan Shivanakere ,  Maxwell McNally ,  Alec Smith ,  Steven Daubert

    IPC: G01R33/07 ,  H10N52/01

    CPC classification number: G01R33/07 ,  H10N52/01

    Abstract: Methods and apparatus for canceling inductive coupling in a magnetic field sensing device having one or more Hall elements. A device can include a Hall element having a first pair of first and second voltage sensing terminals at diametrically opposed locations on the Hall element, and a second pair of third and fourth voltage sensing terminals diametrically opposed locations on the Hall element. A first mirror conductive path extends around a perimeter of the Hall element in a first direction a second mirror conductive path extends around the perimeter of the Hall element in a second direction so that the first and second mirror conductive paths are on opposite sides of the Hall element and are equal and opposite to cancel inductive coupling.

    MAGNETIC FIELD SENSOR FOR ANGLE DETECTION WITH A PHASE-LOCKED LOOP
    8.
    发明申请
    MAGNETIC FIELD SENSOR FOR ANGLE DETECTION WITH A PHASE-LOCKED LOOP 审中-公开
    用于具有相位锁定环的角度检测的磁场传感器

    公开(公告)号：US20160363638A1

    公开(公告)日：2016-12-15

    申请号：US14737739

    申请日：2015-06-12

    Applicant: Allegro Microsystems, LLC

    Inventor： Steven Daubert

    IPC: G01R33/07

    CPC classification number: G01R33/077 ,  G01R33/0041 ,  G01R33/075 ,  G01R33/093 ,  G01R33/098

    Abstract: A magnetic field sensor includes a phase-locked loop to receive a measured magnetic field signal formed from sensing element output signals of a plurality of magnetic field sensing elements in response to a magnetic field. The phase-locked loop is configured to generate an angle signal having a value indicative of the angle of the magnetic field. Associated methods are also described.

    Abstract translation: 磁场传感器包括锁相环，用于接收由多个磁场感测元件响应于磁场的感测元件输出信号形成的测量的磁场信号。 锁相环被配置为产生具有指示磁场角度的值的角度信号。 还描述了相关方法。

    MAGNETORESISTANCE SIGNAL PATH COMPENSATION
    9.
    发明申请
    MAGNETORESISTANCE SIGNAL PATH COMPENSATION 有权

    公开(公告)号：US20250076421A1

    公开(公告)日：2025-03-06

    申请号：US18458441

    申请日：2023-08-30

    Applicant: Allegro MicroSystems, LLC

    Inventor： Tyler Daigle ,  Steven Daubert ,  Srujan Shivanakere ,  Craig Hiller

    IPC: G01R33/09 ,  G01R33/00

    Abstract: Methods and apparatus for a magnetic field sensor having a first set of MR elements configured to change in resistance due to an applied magnetic field having an orientation in a sensitive axis of the first set of MR elements and a second set of MR elements that are immune to the applied magnetic field. The second set of MR elements is configured to change in resistance due to temperature. A processor can compensate for the response of the first set of MR elements based on the temperature information from the second set of MR elements.

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