公开(公告)号：WO2016053667A1

公开(公告)日：2016-04-07

申请号：PCT/US2015/051315

申请日：2015-09-22

Applicant: ALLEGRO MICROSYSTEMS, LLC

Inventor： PETRIE, Craig, S. ,  CADUGAN, Bryan ,  TOEBES, David ,  DOOGUE, Michael, C. ,  TAYLOR, William, P.

IPC: G01R33/07 ,  G01D5/14

CPC classification number: G01R33/072 ,  G01D5/145 ,  G01D18/00 ,  G01R33/091

Abstract: A system includes a magnetic target and a magnetic field sensor. The magnetic field sensor comprises an output node; a circuit to detect a magnetic field produced by the magnetic target; and a processor. The processor may be configured to transmit a signal onto the output node representing the detected magnetic field; detect whether the transmitted signal is interrupted by an external source; and, if the signal is interrupted, initiate a self-test of the apparatus. Corresponding methods and apparatuses are also disclosed.

Abstract translation: 系统包括磁性靶和磁场传感器。 磁场传感器包括输出节点; 用于检测由磁性靶产生的磁场的电路; 和处理器。 处理器可以被配置为将信号发送到表示检测到的磁场的输出节点上; 检测发送信号是否被外部源中断; 并且如果信号被中断，则启动设备的自检。 还公开了相应的方法和装置。

公开(公告)号：WO2015100214A2

公开(公告)日：2015-07-02

申请号：PCT/US2014/071825

申请日：2014-12-22

Applicant: ALLEGRO MICROSYSTEMS, LLC

Inventor： MILANO, Shaun, D. ,  EL BACHA, Georges ,  DOOGUE, Michael, C. ,  HAAS, David, J. ,  DELMAIN, Gregory ,  TAYLOR, William, P. ,  GABOURY, Michael

IPC: G01R33/09

CPC classification number: G01R31/2884 ,  G01R31/2829 ,  G01R31/3187 ,  G01R33/00 ,  G01R33/0023 ,  G01R33/02 ,  G01R33/07 ,  G01R33/09 ,  G01R33/091 ,  G01R35/00 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2924/181 ,  H01L2924/00014 ,  H01L2924/00012

Abstract: Methods and apparatus to provide an integrated circuit having a magnetic sensing element having differential first and second outputs and an input, the input to receive current and first and second switches coupled to a respective one of the differential first and second outputs. A first voltage source is coupled between the first and second switches, the first and second switches having a first state in which the first voltage source is coupled across the differential first and second outputs, and an IC output can output a voltage corresponding to the first voltage source when the first and second switches are in the first state for monitoring operation of a signal path from the magnetic sensing element to the IC output.

Abstract translation: 提供具有具有差分第一和第二输出的磁感测元件和输入的集成电路的方法和装置，所述输入接收电流以及耦合到所述差分第一和第二输出中的相应一个的第一和第二开关。 第一电压源耦合在第一和第二开关之间，第一和第二开关具有第一状态，其中第一电压源跨差分第一和第二输出耦合，并且IC输出可输出对应于第一电压的第一电压 当第一和第二开关处于用于监视从磁感应元件到IC输出的信号路径的操作的第一状态时的电压源。

公开(公告)号：WO2015050666A1

公开(公告)日：2015-04-09

申请号：PCT/US2014/053980

申请日：2014-09-04

Applicant: ALLEGRO MICROSYSTEMS, LLC

Inventor： DAVID, Paul, A. ,  TAYLOR, William, P. ,  CADUGAN, Bryan

IPC: G01R33/00 ,  G01R33/09 ,  H01L43/12

CPC classification number: G01R33/0052 ,  G01R33/096 ,  H01L43/12

Abstract: Novel anisotropic magneto-resistive (AMR) sensor architectures and techniques for fabricating same are described. In some embodiments, AMR sensors (50) having barber pole structures (36a, 36b, 36c, 36d, 36e) disposed below corresponding AMR sensing elements (40) are provided. AMR sensors having segmented AMR sensing elements are also described. Fabrication techniques that can be used to fabricate such sensors are also described. Fabrication techniques are also described that can reduce the risk of contamination during AMR sensor fabrication.

Abstract translation: 描述了新型各向异性磁阻（AMR）传感器体系结构及其制造技术。 在一些实施例中，提供了设置在相应的AMR感测元件（40）下方的理发杆结构（36a，36b，36c，36d，36e）的AMR传感器（50）。 还描述了具有分段的AMR感测元件的AMR传感器。 还描述了可用于制造这种传感器的制造技术。 还描述了可以降低AMR传感器制造期间污染风险的制造技术。

公开(公告)号：WO2015009423A1

公开(公告)日：2015-01-22

申请号：PCT/US2014/044236

申请日：2014-06-26

Applicant: ALLEGRO MICROSYSTEMS, LLC

Inventor： TAYLOR, William, P. ,  SCHELLER, Karl, P. ,  DAVID, Paul

IPC: G01R33/06 ,  G01D5/14

CPC classification number: G01B7/146 ,  G01D5/147 ,  G01R33/06 ,  G01R33/07 ,  G01R33/09

Abstract: A variety of magnetic field sensor arrangements for sensing motion of a ferromagnetic object provide so-called "tooth detectors" using a simple low-cost magnet. One embodiment comprises a magnetic field sensing element (354) whose center axis (380) is closer to a first end of the width dimension (370) of a magnet (368) than to the center axis (360) of the magnet. Another embodiment (900) comprises two magnetic field sensing elements (904,908) wherein a line passing through the first and second magnetic field sensing element intersects the ferromagnetic object (930).

Abstract translation: 用于感测铁磁物体的运动的各种磁场传感器装置使用简单的低成本磁体提供所谓的“牙齿探测器”。 一个实施例包括磁场感测元件（354），其中心轴线（380）比磁体的中心轴线（360）更靠近磁体（368）的宽度尺寸（370）的第一端。 另一实施例（900）包括两个磁场感测元件（904,908），其中穿过第一和第二磁场感测元件的线与铁磁体（930）相交。

公开(公告)号：WO2021021333A1

公开(公告)日：2021-02-04

申请号：PCT/US2020/038025

申请日：2020-06-17

Applicant: ALLEGRO MICROSYSTEMS, LLC

Inventor： DAVID, Paul, A. ,  TAYLOR, William, P.

IPC: G01D5/14 ,  G01R33/00 ,  G01R33/09 ,  G01R33/07

Abstract: A magnetic field sensor (100,200) includes a substrate (102,202) and first and second magnetic field sensing elements (104, A-D) responsive to a magnet, comprising first and second magnetoresistance elements, respectively. At one or more positions of the magnet relative to the first and second magnetic field sensing elements while the magnet is stopped moving, at least one of the magnetic field sensing elements is in saturation in response to the magnet. A third magnetic field sensing element (E) proximate to the first and second magnetoresistance elements is operable to generate a third magnetic field sensing element signal responsive to the magnet, wherein, at the one or more positions while the magnet is stopped moving, the third magnetic field sensing element is not in saturation in response to the magnet or saturates at a higher magnetic field than the first and second magnetic field sensing elements in response to the magnet.

公开(公告)号：WO2013109355A1

公开(公告)日：2013-07-25

申请号：PCT/US2012/068912

申请日：2012-12-11

Applicant: ALLEGRO MICROSYSTEMS, LLC

Inventor： MILANO, Shaun, D. ,  DOOGUE, Michael, C. ,  TAYLOR, William, P.

IPC: G01R33/00 ,  H01L23/495

CPC classification number: H01L43/04 ,  G01R33/0029 ,  G01R33/0052 ,  G01R33/0076 ,  G01R33/07 ,  G01R33/09 ,  H01L23/3107 ,  H01L23/3142 ,  H01L23/49503 ,  H01L23/49506 ,  H01L23/49541 ,  H01L23/49575 ,  H01L24/17 ,  H01L43/02 ,  H01L43/06 ,  H01L43/065 ,  H01L43/08 ,  H01L43/12 ,  H01L43/14 ,  H01L2224/16 ,  H01L2224/16245 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2224/4826 ,  H01L2224/49171 ,  H01L2224/73204 ,  H01L2224/73265 ,  H01L2924/15311 ,  H01L2924/15747 ,  H01L2924/181 ,  H01L2924/30107 ,  H01L2924/3025 ,  H01L2924/00014 ,  H01L2924/00

Abstract: Methods and apparatus to provide an integrated circuit package having a conductive leadframe (204), a non-conductive die paddle (200) mechanically coupled to the leadframe, and a die (206) disposed on the die paddle and electrically connected (208) to the leadframe. With this arrangement, eddy currents are reduced near the magnetic field transducer to reduce interference with magnetic fields.

Abstract translation: 提供集成电路封装的方法和装置，其具有导电引线框架（204），机械耦合到引线框架的非导电管芯焊盘（200）以及设置在管芯焊盘上并电连接（208）至 引线框架。 通过这种布置，磁场传感器附近的涡流减小，以减少对磁场的干扰。

公开(公告)号：WO2022191990A1

公开(公告)日：2022-09-15

申请号：PCT/US2022/017405

申请日：2022-02-23

Applicant: ALLEGRO MICROSYSTEMS, LLC

Inventor： TAYLOR, William, P. ,  CADUGAN, Bryan

IPC: G01S7/4861 ,  G01S7/4863 ,  G01S7/497

Abstract: Methods and apparatus for a controlling a stimulus source to direct photons to a pixel in a pixel array contained in a detector system, analyzing a response of the pixel in the pixel array; and generating an alert based on the response of the pixel in the pixel array. Example stimulus sources include a conductive trace, a PN junction, and a current source.

公开(公告)号：WO2021107968A1

公开(公告)日：2021-06-03

申请号：PCT/US2020/020914

申请日：2020-03-04

Applicant: ALLEGRO MICROSYSTEMS, LLC

Inventor： HAAS, David, J. ,  CESARETTI, Juan, Manuel ,  TAYLOR, William, P.

IPC: G01L9/02 ,  G01D3/08 ,  G01L9/12 ,  G01L9/14 ,  G01L13/02 ,  G01L15/00 ,  G01L27/00

Abstract: A sensor integrated circuit can include sensors (512, 514) with differing levels of sensitivity, a first processing channel that responds to a first analog signal generated by a first sensor (512) to generate a first processed signal, and a second processing channel that responds to a second analog signal generated by the second sensor (514) to generate a second processed signal. Where the first sensor can include a pressure or optical sensing element, and the second sensor can include a pressure or optical sensing element. A checker circuit uses the processed signals to detect faults in the sensor integrated circuit.

公开(公告)号：WO2018026497A2

公开(公告)日：2018-02-08

申请号：PCT/US2017/042094

申请日：2017-07-14

Applicant: ALLEGRO MICROSYSTEMS, LLC

Inventor： SIROHIWALA, Ali, Husain Yusuf ,  TAYLOR, William, P. ,  SHAMBERGER, Katherine

IPC: G05G5/05 ,  G05G9/047

CPC classification number: G05G5/05 ,  G05G9/047 ,  G05G2009/04707 ,  G05G2009/04755

Abstract: A joystick assembly for use with a device including a joystick surface and a first magnet having north and south magnetic poles includes a second magnet having north and south magnetic poles and a movable elongated shaft having first and second opposing ends arranged along a major axis of the shaft. The first end of the shaft is coupled to the second magnet such that movement of the shaft results in movement of the second magnet relative to the first magnet such that a line between centers of the north and south magnetic poles of the second magnet is movable relative to a line between the north and south magnetic poles of the first magnet. An attraction of the second magnet to the first magnet results in a restoring force upon the shaft, and the shaft and the second magnet are removable from the joystick surface.

Abstract translation: 与包括操纵杆表面和具有南北磁极的第一磁体的装置一起使用的操纵杆组件包括具有北磁极和南磁极的第二磁体和具有第一和第二相对位置的可动细长轴， 端部沿着轴的主轴布置。 轴的第一端联接到第二磁体，使得轴的移动导致第二磁体相对于第一磁体的移动，使得第二磁体的北磁极和南磁极的中心之间的线能够相对移动 到第一磁体的北磁极和南磁极之间的线。 第二磁体对第一磁体的吸引力导致轴上的恢复力，并且轴和第二磁体可从操纵杆表面移除。

公开(公告)号：WO2018013302A1

公开(公告)日：2018-01-18

申请号：PCT/US2017/038415

申请日：2017-06-21

Applicant: ALLEGRO MICROSYSTEMS, LLC

Inventor： EAGEN, Jeffrey ,  DAVID, Paul, A. ,  TAYLOR, William, P.

IPC: G01D5/14 ,  G01R33/09

CPC classification number: G01D5/165 ,  G01D5/145 ,  G01R33/09 ,  G01R33/093

Abstract: A magnetic field sensor for detecting motion of an object includes a magnet configured to generate a magnetic field and having a first surface adjacent to the object and a second surface distal from the object. The first surface of the magnet has a centerline axis substantially parallel to and disposed on the first surface, and the centerline axis is diagonal with respect to a motion axis substantially parallel to and disposed on the first surface and parallel to which the object moves. The magnetic field sensor also includes a semiconductor substrate disposed between the magnet and the object, the semiconductor substrate supporting a plurality of spaced magnetoresistance elements disposed along a sensing element axis substantially parallel to the centerline axis of the magnet and configured to generate a respective plurality of magnetic field signals in response to the motion of the object with respect to magnetic field.

Abstract translation: 用于检测物体的运动的磁场传感器包括被配置为产生磁场并且具有与物体相邻的第一表面和远离物体的第二表面的磁体。 磁体的第一表面具有与第一表面基本平行并且设置在第一表面上的中心线轴线，并且中心轴线相对于基本上平行于第一表面并且设置在第一表面上且与物体平行移动的运动轴线倾斜。 所述磁场传感器还包括设置在所述磁体和所述物体之间的半导体衬底，所述半导体衬底支撑多个间隔开的磁阻元件，所述多个间隔开的磁阻元件沿着基本上平行于所述磁体的中心轴线的感测元件轴设置，并且被配置为分别产生多个 磁场信号响应于物体相对于磁场的运动。