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    CURRENT SENSOR
    1.
    发明申请
    CURRENT SENSOR 审中-公开

    公开(公告)号：US20180038897A1

    公开(公告)日：2018-02-08

    申请号：US15231133

    申请日：2016-08-08

    Applicant: ALLEGRO MICROSYSTEMS, LLC

    Inventor： Shaun D. Milano ,  Peter Cisar ,  Stefan Kranz ,  Stephan Schurt

    IPC: G01R15/18 ,  G01R15/20

    CPC classification number: G01R15/183 ,  G01R15/185 ,  G01R15/202 ,  G01R15/205

    Abstract: A current sensor includes a ferromagnetic core having a substantially central opening for receiving a current conductor and at least two gaps portions, each of the gap portions having an associated gap spacing. A detector of the current sensor includes at least one first sensing element disposed in a first one of the gap portions and configured to generate a respective first magnetic field signal in response to a first magnetic field generated in the first gap portion in response to a current through the current conductor. The detector also includes at least one second sensing element disposed in a second one of the gap portions and configured to generate a respective second magnetic field signal in response to a second magnetic field generated in the second gap portion in response to the current through the conductor. A method of sensing a current through a current conductor is also provided.

    Magnetic field sensor and associated method that can establish a measured threshold value and that can store the measured threshold value in a memory device
    3.
    发明授权
    Magnetic field sensor and associated method that can establish a measured threshold value and that can store the measured threshold value in a memory device 有权

    公开(公告)号：US10066965B2

    公开(公告)日：2018-09-04

    申请号：US15466894

    申请日：2017-03-23

    Applicant: Allegro MicroSystems, LLC

    Inventor： Andrea Foletto ,  Peter Cisar ,  Eric Shoemaker

    IPC: G01B7/30 ,  G01D5/14 ,  G01D18/00

    Abstract: A magnetic field sensor includes a magnetic field sensing element configured to generate a magnetic field signal; a measured threshold module configured to generate a measured threshold signal in accordance with positive peaks and negative peaks of the magnetic field signal; a memory device coupled to receive and configured to store, at each one of a plurality of storage times, a respective value of the measured threshold signal; a threshold module coupled to receive from the memory device, at a calculation time, a stored value of the measured threshold signal and configured to generate a calculated threshold value; and a comparison circuit coupled to receive the calculated threshold value and to receive the magnetic field signal. The comparison circuit is configured to compare the calculated threshold value with the magnetic field signal to generate an output signal. A corresponding method is associated with the magnetic field sensor.

    Current sensor
    4.
    发明授权
    Current sensor 有权

    公开(公告)号：US10247758B2

    公开(公告)日：2019-04-02

    申请号：US15231133

    申请日：2016-08-08

    Applicant: ALLEGRO MICROSYSTEMS, LLC

    Inventor： Shaun D. Milano ,  Peter Cisar ,  Stefan Kranz ,  Stephan Schurt

    IPC: G01R33/36 ,  G01R15/18 ,  G01R15/20

    Abstract: A current sensor includes a ferromagnetic core having a substantially central opening for receiving a current conductor and at least two gaps portions, each of the gap portions having an associated gap spacing. A detector of the current sensor includes at least one first sensing element disposed in a first one of the gap portions and configured to generate a respective first magnetic field signal in response to a first magnetic field generated in the first gap portion in response to a current through the current conductor. The detector also includes at least one second sensing element disposed in a second one of the gap portions and configured to generate a respective second magnetic field signal in response to a second magnetic field generated in the second gap portion in response to the current through the conductor. A method of sensing a current through a current conductor is also provided.

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