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公开(公告)号：US09865807B2
公开(公告)日：2018-01-09
申请号：US14877309
申请日：2015-10-07
Applicant: Allegro Microsystems, LLC
Inventor： Shixi Louis Liu , Harianto Wong , Paul A. David , John B. Sauber , Shaun D. Milano , Raguvir Kanda , Bruce Hemenway
IPC: H01L23/495 , H01L43/14 , H01L43/04 , H01L21/48 , H01L43/06 , G01R33/00 , G01R33/09 , G01R15/20 , H01L23/00
CPC classification number: H01L43/14 , G01R15/202 , G01R15/207 , G01R33/0052 , G01R33/09 , H01L21/4828 , H01L23/49548 , H01L24/13 , H01L24/16 , H01L24/81 , H01L43/04 , H01L43/065 , H01L2224/131 , H01L2224/16245 , H01L2224/81801 , H01L2924/15162 , H01L2924/014 , H01L2924/00014
Abstract: In one aspect, a method includes processing a metal substrate, performing a first etch on a first surface of the metal substrate to form, for an integrated circuit package, secondary leads and a curved component having two primary leads and performing a second etch, on a second surface of the substrate opposite the first surface, at locations on the secondary leads and locations on the curved component to provide a locking mechanism. Each primary lead located at a respective end of the curved component.
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公开(公告)号：US20170356762A1
公开(公告)日：2017-12-14
申请号：US15176668
申请日：2016-06-08
Applicant: Allegro MicroSystems, LLC
Inventor： Paul A. David , Ravi Vig
Abstract: A back-biased magnetic field sensor can have one or more vertical Hall effect elements arranged within a substrate region of a substrate, wherein magnetic fields are oriented substantially vertical to the substrate within the substrate region when a ferromagnetic object is not proximate. When the ferromagnetic object becomes proximate, the magnetic field sensor can sense at least the proximity, and, in some embodiments, can also localize a position of the ferromagnetic object relative to the magnetic field sensor.
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公开(公告)号：US09823092B2
公开(公告)日：2017-11-21
申请号：US14529669
申请日：2014-10-31
Applicant: Allegro MicroSystems, LLC
Inventor： Paul A. David , William P. Taylor
CPC classification number: G01D5/145 , G01D5/147 , G01D5/2013
Abstract: A magnetic field sensor has a plurality of magnetic field sensing elements and operates as a motion detector for sensing a rotation or other movement of a target object.
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公开(公告)号：US09583247B2
公开(公告)日：2017-02-28
申请号：US14287469
申请日：2014-05-27
Applicant: Allegro Microsystems, LLC
Inventor： Paul A. David , Ryan Metivier
CPC classification number: H01F7/06 , G01D5/145 , G01D5/24438 , H01F7/0278
Abstract: A magnet includes a magnetic body having a length and width. The body has a first notch in one side and extending along at least a portion of the length of the body, and a second notch in an opposite side of the body extending along at least a portion of the length of the body. A magnetic field produced by the body has a substantially uniform magnetic flux along at least a portion of the length of the body. A system for detecting a target includes one or more magnetic field sensing elements positioned within the portion of the magnetic field having substantially uniform flux.
Abstract translation: 磁体包括具有长度和宽度的磁体。 主体在一侧具有第一凹口并且沿着主体的长度的至少一部分延伸，并且在主体的相对侧的第二凹口沿主体的至少一部分长度延伸。 由身体产生的磁场沿着身体长度的至少一部分具有基本均匀的磁通量。 用于检测目标的系统包括位于具有基本上均匀通量的磁场部分内的一个或多个磁场感测元件。
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公开(公告)号：US20250079061A1
公开(公告)日：2025-03-06
申请号：US18456666
申请日：2023-08-28
Applicant: Allegro MicroSystems, LLC
Inventor： Paul A. David , Maurizio Salato , Andrew Thompson , Joseph Duigan , Andrew Bernard Keogh , William P. Taylor
Abstract: Aspects of the present disclosure include galvanically-isolated (voltage-isolated) transformer-based integrated circuit (IC) packages providing cavities or spaces for an included magnetic core to underdo size changes due to magnetostriction without being constrained or substantially constrained, thus, providing for improved magnetic performance. The circuits, ICs and IC packages and modules may include various types of circuits. In some examples, IC packages or modules may include a galvanically-isolated gate driver or other high voltage circuit.
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Patent Agency Ranking
公开(公告)号：US11828819B2
公开(公告)日：2023-11-28
申请号：US18046222
申请日：2022-10-13
Applicant: Allegro MicroSystems, LLC
Inventor： Ravi Vig , William P. Taylor , Andreas P. Friedrich , Paul A. David , Marie-Adelaide Lo , Eric Burdette , Eric G. Shoemaker , Michael C. Doogue
CPC classification number: G01R33/0047 , G01B7/30 , G01D5/145 , G01R15/202 , G01R33/0011 , G01R33/072 , H01L2224/48247 , H01L2924/19105
Abstract: A magnetic field sensor includes a lead frame, a passive component, semiconductor die supporting a magnetic field sensing element and attached to the lead frame, a non-conductive mold material enclosing the die and at least a portion of the lead frame, and a ferromagnetic mold material secured to a portion of the non-conductive mold material. The lead frame has a recessed region and the passive component is positioned in the recessed region. The ferromagnetic mold material may comprise a soft ferromagnetic material to form a concentrator or a hard ferromagnetic material to form a bias magnet.
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公开(公告)号：US20230332878A1
公开(公告)日：2023-10-19
申请号：US18337829
申请日：2023-06-20
Applicant: Allegro MicroSystems, LLC
Inventor： Rémy Lassalle-Balier , Solène Bastien , Paul A. David , Maxime Rioult , Alexander Latham , Shaun Veilleux
CPC classification number: G01B7/30 , G01R33/0094 , G01R33/098 , G01R33/091
Abstract: In one aspect, an angle sensor includes a first plurality of magnetoresistance elements located at a first location on an axis and a second plurality of magnetoresistance elements located at a second location on the axis. The first plurality of magnetoresistance elements includes a first one or more magnetoresistance elements each having a reference direction in a first direction; and a second one or more magnetoresistance elements each having a reference direction in a second direction. The second plurality of magnetoresistance elements includes a third one or more magnetoresistance elements each having a reference direction in the first direction, and a fourth one or more magnetoresistance elements each having a reference direction in the second direction. The angle sensor senses movement of a magnetic target, and the magnetic target is a ring magnet or a single pole magnet.
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公开(公告)号：US20230057390A1
公开(公告)日：2023-02-23
申请号：US18046222
申请日：2022-10-13
Applicant: Allegro MicroSystems, LLC
Inventor： Ravi Vig , William P. Taylor , Andreas P. Friedrich , Paul A. David , Marie-Adelaide Lo , Eric Burdette , Eric G. Shoemaker , Michael C. Doogue
Abstract: A magnetic field sensor includes a lead frame, a passive component, semiconductor die supporting a magnetic field sensing element and attached to the lead frame, a non-conductive mold material enclosing the die and at least a portion of the lead frame, and a ferromagnetic mold material secured to a portion of the non-conductive mold material. The lead frame has a recessed region and the passive component is positioned in the recessed region. The ferromagnetic mold material may comprise a soft ferromagnetic material to form a concentrator or a hard ferromagnetic material to form a bias magnet.
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公开(公告)号：US11561112B2
公开(公告)日：2023-01-24
申请号：US16818199
申请日：2020-03-13
Applicant: Allegro MicroSystems, LLC
Inventor： Robert A. Briano , Paul A. David
Abstract: Methods and apparatus for a current sensor having an elongate current conductor having an input and an output and a longitudinal axis. First, second, third and fourth magnetic field sensing elements are coupled in a bridge configuration and positioned in a plane parallel to a surface of the current conductor such that the second and fourth magnetic field sensing elements comprise inner elements and the first and third magnetic field sensing elements comprise outer elements. Embodiments of the sensor reduce the effects of stray fields on the sensor.
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公开(公告)号：US11473935B1
公开(公告)日：2022-10-18
申请号：US17232440
申请日：2021-04-16
Applicant: Allegro MicroSystems, LLC
Inventor： Aurelian Diaconu , Paul A. David
Abstract: A system and a method can use a magnetic field sensor to measure rotation angles of a ferromagnetic object in the form of a screw having screw threads. The magnetic field sensor can use a plurality of correction coefficients to improve an accuracy of the measured rotation angles of the ferromagnetic object. The magnetic field sensor can be disposed to a side of the screw.
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