Patents by Inventor William P. Taylor

William P. Taylor has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20180017638
    Abstract: In one aspect, an integrated circuit (IC) includes a sensor that includes a first magnetoresistive (MR) element and a second MR element less active to a presence of a magnetic field than the first MR element. The second MR element includes a metal layer diffused into other layers of the second MR element.
    Type: Application
    Filed: July 18, 2016
    Publication date: January 18, 2018
    Applicant: Allegro MicroSystems, LLC
    Inventors: Paul A. David, William P. Taylor
  • Publication number: 20180011150
    Abstract: Methods and apparatus for a magnetic sensor having a die and sensor circuitry formed in a device layer of the die with a coil integrated with the die to generate a magnetic field. A magnetoresistive magnetic field sensing element on the die detects changes in the magnetic field generated by the coil as a result of the presence of a ferromagnetic target. The sensor circuitry may process the changes in the magnetic field generated by the coil.
    Type: Application
    Filed: September 20, 2017
    Publication date: January 11, 2018
    Applicant: Allegro MicroSystems, LLC
    Inventors: Gary T. Pepka, William P. Taylor
  • Patent number: 9857437
    Abstract: In one aspect, a Hall Effect sensing element includes a Hall plate having a thickness less than about 100 nanometers an adhesion layer directly in contact with the Hall plate and having a thickness in a range about 0.1 nanometers to 5 nanometers. In another aspect, a sensor includes a Hall Effect sensing element. The Hall Effect sensing element includes a substrate that includes one of a semiconductor material or an insulator material, an insulation layer in direct contact with the substrate, an adhesion layer having a thickness in a range of about 0.1 nanometers to 5 nanometers and in direct contact with the insulation layer and a Hall plate in direct contact with the adhesion layer and having a thickness less than about 100 nanometers.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: January 2, 2018
    Assignee: Allegro Microsystems, LLC
    Inventors: William P. Taylor, Harianto Wong
  • Patent number: 9859489
    Abstract: An integrated circuit can have a first substrate supporting a magnetic field sensing element and a second substrate supporting another magnetic field sensing element. The first and second substrates can be arranged in a variety of configurations. Another integrated circuit can have a first magnetic field sensing element and second different magnetic field sensing element disposed on surfaces thereof.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: January 2, 2018
    Assignee: Allegro MicroSystems, LLC
    Inventors: Michael C. Doogue, William P. Taylor, Vijay Mangtani
  • Patent number: 9823092
    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.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: November 21, 2017
    Assignee: Allegro Microsystems, LLC
    Inventors: Paul A. David, William P. Taylor
  • Publication number: 20170328739
    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.
    Type: Application
    Filed: July 25, 2017
    Publication date: November 16, 2017
    Applicant: Allegro MicroSystems, LLC
    Inventors: Paul A. David, William P. Taylor
  • Patent number: 9817078
    Abstract: Methods and apparatus for a magnetic field sensor including a die, a coil proximate the die to generate a magnetic field, and a magnetic field sensing element having to detect changes in the magnetic field generated by the coil in response to a ferromagnetic target.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: November 14, 2017
    Assignee: ALLEGRO MICROSYSTEMS LLC
    Inventors: Gary T. Pepka, William P. Taylor
  • Patent number: 9810519
    Abstract: A variety of magnetic field sensor arrangements provide so-called “tooth detectors” using a simple low-cost magnet.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: November 7, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventors: William P. Taylor, P. Karl Scheller, Paul David
  • Patent number: 9812588
    Abstract: A magnetic field sensor includes a lead frame, a semiconductor die having a first surface in which a magnetic field sensing element is disposed and a second surface attached to the lead frame, and a non-conductive mold material enclosing the die and at least a portion of the lead frame. The sensor may include a ferromagnetic mold material secured to a portion of the non-conductive mold material. Features include a multi-sloped taper to an inner surface of a non-contiguous central region of the ferromagnetic mold material, a separately formed element disposed in the non-contiguous central region, one or more slots in the lead frame, a molded ferromagnetic suppression device spaced from the non-conductive mold material and enclosing a portion of a lead, a passive device spaced from the non-conductive mold material and coupled to a plurality of leads, and a ferromagnetic bead coupled to a lead.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: November 7, 2017
    Assignee: Allegro Microsystems, LLC
    Inventors: Ravi Vig, William P. Taylor, Paul David, P. Karl Scheller, Andreas P. Friedrich
  • Publication number: 20170314907
    Abstract: A variety of magnetic field sensor arrangements provide so-called “tooth detectors” using a simple low-cost magnet.
    Type: Application
    Filed: July 20, 2017
    Publication date: November 2, 2017
    Applicant: Allegro MicroSystems, LLC
    Inventors: William P. Taylor, P. Karl Scheller, Paul A. David
  • Publication number: 20170278981
    Abstract: A magnetic field sensor includes a lead frame, a semiconductor die having a first surface in which a magnetic field sensing element is disposed and a second surface attached to the lead frame, and a non-conductive mold material enclosing the die and at least a portion of the lead frame. The sensor may include a ferromagnetic mold material secured to a portion of the non-conductive mold material. Features include a multi-sloped taper to an inner surface of a non-contiguous central region of the ferromagnetic mold material, a separately formed element disposed in the non-contiguous central region, one or more slots in the lead frame, a molded ferromagnetic suppression device spaced from the non-conductive mold material and enclosing a portion of a lead, a passive device spaced from the non-conductive mold material and coupled to a plurality of leads, and a ferromagnetic bead coupled to a lead.
    Type: Application
    Filed: June 9, 2017
    Publication date: September 28, 2017
    Applicant: Allegro MicroSystems, LLC
    Inventors: Ravi Vig, William P. Taylor, Paul A. David, P. Karl Scheller, Andreas P. Friedrich
  • Publication number: 20170261546
    Abstract: An integrated circuit includes at least one first magnetic field sensing element including at least one first magnetoresistance element configured to provide an output signal of the integrated circuit in response to a detected magnetic field. The integrated circuit also includes at least one second magnetic field sensing element including at least one second magnetoresistance element configured to have a characteristic indicative of a stress condition. A method for detecting a stress condition in an integrated circuit is also provided.
    Type: Application
    Filed: March 14, 2016
    Publication date: September 14, 2017
    Applicant: Allegro Microsystems, LLC
    Inventors: Jeffrey Eagen, Maxim Klebanov, William P. Taylor
  • Publication number: 20170254863
    Abstract: A magnetic field sensor includes a plurality of magnetoresistance elements, each having at least one characteristic selected to provide a respective, different response to an applied magnetic field, wherein each of the plurality of magnetoresistance elements is coupled in parallel. Illustrative characteristics selected to provide the respective responses include dimensions and/or construction parameters such as materials, layer thickness and order, and spatial relationship of the magnetoresistance element to the applied magnetic field. A method includes providing each of a plurality of magnetoresistance elements with at least one characteristic selected to provide a respective, different response to an applied magnetic field, wherein each of the plurality of magnetoresistance elements is coupled in parallel.
    Type: Application
    Filed: March 4, 2016
    Publication date: September 7, 2017
    Applicant: Allegro Microsystems, LLC
    Inventors: Jeffrey Eagen, William P. Taylor
  • Patent number: 9739846
    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.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: August 22, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventors: Craig S. Petrie, Bryan Cadugan, David Toebes, Michael C. Doogue, William P. Taylor
  • Publication number: 20170179377
    Abstract: Methods for providing a sensor integrated circuit package including employing a conductive leadframe and forming a non-conductive die paddle in relation to the leadframe. The method can further include placing a die on the non-conductive die paddle to form an assembly, forming at least one electrical connection between the die and the leadframe, and overmolding the assembly to form an integrated circuit package.
    Type: Application
    Filed: March 2, 2017
    Publication date: June 22, 2017
    Applicant: Allegro MicroSystems, LLC
    Inventors: Shaun D. Milano, Michael C. Doogue, William P. Taylor
  • Patent number: 9664494
    Abstract: A magnetic field sensor with enhanced immunity to external magnetic interference is presented. Included is a magnetic field signal generator and a demodulator. The magnetic field signal generator produces a magnetic field signal having a modulated signal portion in a first frequency band based on a sensed modulated AC bias magnetic field. The modulated AC bias magnetic field is produced by movement of ferromagnetic target relative to a bias coil when an AC signal is applied to the bias coil. When the magnetic field signal also includes an unwanted signal portion in a second frequency band based on external magnetic interference, demodulation performed by the demodulator results in the modulated signal portion being shifted from the first frequency band to a third frequency band and the unwanted signal portion being shifted to the first frequency band. The bias coil may be provided as part of the magnetic field sensor.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: May 30, 2017
    Assignee: Allegro Microsystems, LLC
    Inventors: Devon Fernandez, Paul David, William P. Taylor
  • Patent number: 9666788
    Abstract: A magnetic field sensor includes a lead frame having a plurality of leads, at least two of which have a connection portion and a die attach portion. A semiconductor die is attached to the die attach portion of the at least two leads. The sensor further includes at least one wire bond coupled between the die and a first surface of the lead frame. The die is attached to a second, opposing surface of the lead frame in a lead on chip configuration. In some embodiments, at least one passive component is attached to the die attach portion of at least two leads.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: May 30, 2017
    Assignee: ALLEGRO MICROSYSTEMS, LLC
    Inventors: William P. Taylor, Paul David, Ravi Vig
  • Publication number: 20170110652
    Abstract: An integrated circuit can have a first substrate supporting a magnetic field sensing element and a second substrate supporting another magnetic field sensing element. The first and second substrates can be arranged in a variety of configurations. Another integrated circuit can have a first magnetic field sensing element and second different magnetic field sensing element disposed on surfaces thereof.
    Type: Application
    Filed: December 30, 2016
    Publication date: April 20, 2017
    Applicant: Allegro MicroSystems, LLC
    Inventors: Michael C. Doogue, William P. Taylor, Vijay Mangtani
  • Patent number: 9620705
    Abstract: Methods and apparatus to provide a magnetic field sensor device including a magnetic sensor element, a die having wafer bumps, wherein the magnetic sensor element is positioned in relation to the die, and conductive leadfingers having respective portions electrically connected to the wafer bumps. In embodiments, the device includes a region about the magnetic sensor element that does not contain electrically conductive material for preventing eddy current flow.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: April 11, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventors: Shaun D. Milano, Michael C. Doogue, William P. Taylor
  • Publication number: 20160334830
    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.
    Type: Application
    Filed: August 1, 2016
    Publication date: November 17, 2016
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Ali Husain Yusuf Sirohiwala, William P. Taylor, Katherine Shamberger