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    Shifting device of a vehicle transmission
    1.
    发明授权
    Shifting device of a vehicle transmission 有权

    公开(公告)号：US10408639B2

    公开(公告)日：2019-09-10

    申请号：US14972242

    申请日：2015-12-17

    Applicant: Allegro MicroSystems, LLC ,  ZF Friedrichshafen AG

    Inventor： Stefan Hakspiel ,  Thomas Kerdraon ,  Andreas P. Friedrich

    IPC: G01D5/20 ,  G01D5/14 ,  F16H61/00

    Abstract: A shifting device with two positive-locking shifting element halves includes a positive connection between the shifting element halves that is able to be established or released. The respective prevailing operating states of the shifting element halves are determined through a sensor device. The surface areas of an encoder contour relative to a measuring device are formed in a convex or concave manner, whereas a perpendicular gap between the surface areas of the encoder contour and a permanent magnet, starting from a joint area between the surface areas in the direction of an end area of the surface areas increases or decreases in each case.

    CURRENT SENSOR PACKAGE
    2.
    发明公开
    CURRENT SENSOR PACKAGE 审中-公开

    公开(公告)号：US20230258693A1

    公开(公告)日：2023-08-17

    申请号：US17651080

    申请日：2022-02-15

    Applicant: Allegro MicroSystems, LLC

    Inventor： Simon E. Rock ,  Thomas Kerdraon ,  Yannick Vuillermet ,  Loïc André Messier ,  Andreas P. Friedrich

    IPC: G01R15/20 ,  G01R19/00

    CPC classification number: G01R15/202 ,  G01R19/0092

    Abstract: Current sensor packages are described including a leadframe configured to carry a current to be sensed and a current sensor that is electrically isolated from the leadframe. The current sensor is disposed adjacent to a first portion of the leadframe that includes a plurality of notches. An encapsulating material is configured to encapsulate the current sensor and at least a part of the first portion of the leadframe that is adjacent to the current sensor and includes the plurality of notches. The current sensor includes a substrate, a first magnetic field sensing element that is formed on the substrate, and a second magnetic field sensing element that is formed on the substrate. The first magnetic field sensing element and the second magnetic field sensing element are disposed on opposite sides of a central axis of the first portion of the leadframe.

    Angle Sensing Using Differential Magnetic Measurement And A Back Bias Magnet
    3.
    发明申请
    Angle Sensing Using Differential Magnetic Measurement And A Back Bias Magnet 审中-公开

    公开(公告)号：US20180094951A1

    公开(公告)日：2018-04-05

    申请号：US15834569

    申请日：2017-12-07

    Applicant: Allegro MicroSystems, LLC

    Inventor： Simon Tima ,  Yannick Vuillermet ,  Andreas P. Friedrich ,  Thomas Kerdraon

    IPC: G01D5/20 ,  G01R33/07 ,  G01B7/14

    CPC classification number: G01D5/2013 ,  G01B7/14 ,  G01D5/147 ,  G01R33/072

    Abstract: A magnetic field sensor includes a back bias magnet to generate a DC magnetic field. First and second magnetic field sensing elements of the magnetic field sensor are disposed proximate to at least one ferromagnetic surface of a ferromagnetic target object. The first and second magnetic field sensing elements generate first and second electronic signals, respectively, in response to first and second sensed magnetic fields corresponding to the DC magnetic field but influenced by the at least one ferromagnetic surface. The magnetic field sensor generates a difference signal that is a difference of amplitudes of the first and second electronic signals. The difference signal is indicative of a rotation measurement of an absolute relative rotation of the ferromagnetic target object and the magnetic field sensor about a rotation axis.

    ANGLE SENSING USING DIFFERENTIAL MAGNETIC MEASUREMENT AND A BACK BIAS MAGNET
    4.
    发明申请
    ANGLE SENSING USING DIFFERENTIAL MAGNETIC MEASUREMENT AND A BACK BIAS MAGNET 有权

    公开(公告)号：US20170234702A1

    公开(公告)日：2017-08-17

    申请号：US15042469

    申请日：2016-02-12

    Applicant: Allegro Microsystems, LLC

    Inventor： Simon Tima ,  Yannick Vuillermet ,  Andreas P. Friedrich ,  Thomas Kerdraon

    IPC: G01D5/20

    CPC classification number: G01D5/2013 ,  G01B7/14 ,  G01D5/147 ,  G01R33/072

    Abstract: A magnetic field sensor includes a back bias magnet to generate a DC magnetic field. First and second magnetic field sensing elements of the magnetic field sensor are disposed proximate to at least one ferromagnetic surface of a ferromagnetic target object. The first and second magnetic field sensing elements generate first and second electronic signals, respectively, in response to first and second sensed magnetic fields corresponding to the DC magnetic field but influenced by the at least one ferromagnetic surface. The magnetic field sensor generates a difference signal that is a difference of amplitudes of the first and second electronic signals. The difference signal is indicative of a rotation measurement of an absolute relative rotation of the ferromagnetic target object and the magnetic field sensor about a rotation axis.

    Current sensor package
    8.
    发明授权
    Current sensor package 有权

    公开(公告)号：US11892476B2

    公开(公告)日：2024-02-06

    申请号：US17651080

    申请日：2022-02-15

    Applicant: Allegro MicroSystems, LLC

    Inventor： Simon E. Rock ,  Thomas Kerdraon ,  Yannick Vuillermet ,  Loïc André Messier ,  Andreas P. Friedrich

    IPC: G01R15/20 ,  G01R19/00

    CPC classification number: G01R15/202 ,  G01R19/0092

    Abstract: Current sensor packages are described including a leadframe configured to carry a current to be sensed and a current sensor that is electrically isolated from the leadframe. The current sensor is disposed adjacent to a first portion of the leadframe that includes a plurality of notches. An encapsulating material is configured to encapsulate the current sensor and at least a part of the first portion of the leadframe that is adjacent to the current sensor and includes the plurality of notches. The current sensor includes a substrate, a first magnetic field sensing element that is formed on the substrate, and a second magnetic field sensing element that is formed on the substrate. The first magnetic field sensing element and the second magnetic field sensing element are disposed on opposite sides of a central axis of the first portion of the leadframe.

    Angle sensing using differential magnetic measurement and a back bias magnet
    9.
    发明授权
    Angle sensing using differential magnetic measurement and a back bias magnet 有权

    公开(公告)号：US10598515B2

    公开(公告)日：2020-03-24

    申请号：US15834569

    申请日：2017-12-07

    Applicant: Allegro MicroSystems, LLC

    Inventor： Simon Tima ,  Yannick Vuillermet ,  Andreas P. Friedrich ,  Thomas Kerdraon

    IPC: G01B7/30 ,  G01D5/20 ,  G01D5/14 ,  G01B7/14 ,  G01R33/07

    Abstract: A magnetic field sensor includes a back bias magnet to generate a DC magnetic field. First and second magnetic field sensing elements of the magnetic field sensor are disposed proximate to at least one ferromagnetic surface of a ferromagnetic target object. The first and second magnetic field sensing elements generate first and second electronic signals, respectively, in response to first and second sensed magnetic fields corresponding to the DC magnetic field but influenced by the at least one ferromagnetic surface. The magnetic field sensor generates a difference signal that is a difference of amplitudes of the first and second electronic signals. The difference signal is indicative of a rotation measurement of an absolute relative rotation of the ferromagnetic target object and the magnetic field sensor about a rotation axis.

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