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.

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.

公开(公告)号：US20170268903A1

公开(公告)日：2017-09-21

申请号：US15074358

申请日：2016-03-18

Applicant: Allegro Microsystems, LLC

Inventor： Stefan Kranz ,  Stephan Schurt ,  Andreas P. Friedrich ,  Yannick Vuillermet

IPC: G01D5/14

CPC classification number: G01D5/145 ,  G01B7/003 ,  G01B7/023 ,  G01D21/02 ,  G01R33/077

Abstract: An assembly has a base structure, a rotatable structure, a first magnet coupled to the base structure, a second magnet coupled to the rotatable structure, and a magnetic field sensor. The magnetic field sensor can identify at least one condition (i.e., position) of the assembly.

公开(公告)号：US10323958B2

公开(公告)日：2019-06-18

申请号：US15074358

申请日：2016-03-18

Applicant: Allegro Microsystems, LLC

Inventor： Stefan Kranz ,  Stephan Schurt ,  Andreas P. Friedrich ,  Yannick Vuillermet

IPC: G01D5/14 ,  G01D21/02 ,  G01B7/02 ,  G01B7/00 ,  G01R33/07

Abstract: An assembly has a base structure, a rotatable structure, a first magnet coupled to the base structure, a second magnet coupled to the rotatable structure, and a magnetic field sensor. The magnetic field sensor can identify at least one condition (i.e., position) of the assembly.