Patents by Inventor Michael C. Doogue

Michael C. Doogue 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: 20180340990
    Abstract: A pressure sensor includes a chamber comprising a conductive portion and a deformable portion coupled to the conductive portion and susceptible to deformation in response to a pressure differential between an interior of the chamber and an exterior of the chamber; at least one coil responsive to an AC coil drive signal; at least one magnetic field sensing element disposed proximate to the at least one coil and to the conductive portion of the chamber and configured to generate a magnetic field signal in response to a reflected magnetic field generated by the at least one coil and reflected by the conductive portion; and a circuit coupled to the at least one magnetic field sensing element to generate an output signal of the pressure sensor indicative of the pressure differential between the interior of the chamber and the exterior of the chamber in response to the magnetic field signal.
    Type: Application
    Filed: May 26, 2017
    Publication date: November 29, 2018
    Applicants: Allegro MicroSystems, LLC, COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
    Inventors: Alexander Latham, Michael C. Doogue, Claude Fermon, Xavier Du Hamel De Milly, Myriam Pannetier-Lecoeur
  • Patent number: 10073136
    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.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: September 11, 2018
    Assignee: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Shaun D. Milano, Georges El Bacha, Michael C. Doogue, William P. Taylor
  • Patent number: 10069063
    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: December 30, 2016
    Date of Patent: September 4, 2018
    Assignee: Allegro MicroSystems, LLC
    Inventors: Michael C. Doogue, William P. Taylor, Vijay Mangtani
  • Publication number: 20180149677
    Abstract: Systems and methods described herein are directed towards integrating a shield layer into a current sensor to shield a magnetic field sensing element and associated circuitry in the current sensor from electrical, voltage, or electrical transient noise. In an embodiment, a shield layer may be disposed along at least one surface of a die supporting a magnetic field sensing element. The shield layer may be disposed in various arrangements to shunt noise caused by a parasitic coupling between the magnetic field sensing element and the current carrying conductor away from the magnetic field sensing element.
    Type: Application
    Filed: November 29, 2016
    Publication date: May 31, 2018
    Applicant: Allegro MicroSystems, LLC
    Inventors: Shaun D. Milano, Bryan Cadugan, Michael C. Doogue, Alexander Latham, William P. Taylor, Harianto Wong, Sundar Chetlur
  • Patent number: 9910088
    Abstract: Methods and apparatus to provide an integrated circuit having a magnetic sensing element and fault detection module coupled to the sensing element, the fault detection module including circuitry to detect a fault condition and to self-test operation of the circuitry for detecting the fault condition. In illustrative embodiments, a fault pin indicates the fault condition.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: March 6, 2018
    Assignee: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Shaun D. Milano, Georges El Bacha, Michael C. Doogue, William P. Taylor
  • 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: 9852094
    Abstract: Described embodiments provide a device configured to be coupled to a shared bus. The device includes a magnetic field sensing element to sense a magnetic field. Upon receiving a configuration command over the shared bus, the device determines whether a parameter of the sensed magnetic field meets a predetermined criteria. If the parameter of the sensed magnetic field meets the predetermined criteria, the device responds to the configuration command by applying one or more configuration settings. Otherwise, if the parameter of the sensed magnetic field does not meet the predetermined criteria, the device ignores the configuration command.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: December 26, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventors: Jesse Lapomardo, Craig S. Petrie, Matthew Regan, Michael C. Doogue
  • Patent number: 9787495
    Abstract: A network slave device includes a transceiver for communicating over a communication bus in accordance with a point-to-point network protocol. The network slave device may include an address to identify the network slave device on the network. It may also include a communication circuit configured to process a command received by the transceiver and generate a reply for transmission over the communication bus if an address included in the command matches the address of the slave device. A master device communicating on the network may send commands including the address of the slave device in accordance with the point-to-point network protocol. In an embodiment, the point-to-point protocol is the SENT protocol.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: October 10, 2017
    Assignee: Allegro Microsystems, LLC
    Inventors: Richard Vreeland, Nevenka Kozomora, Michael C. Doogue, Ricardo Scheinkerman
  • 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
  • Publication number: 20170161218
    Abstract: Described embodiments provide a device configured to be coupled to a shared bus. The device includes a magnetic field sensing element to sense a magnetic field. Upon receiving a configuration command over the shared bus, the device determines whether a parameter of the sensed magnetic field meets a predetermined criteria. If the parameter of the sensed magnetic field meets the predetermined criteria, the device responds to the configuration command by applying one or more configuration settings. Otherwise, if the parameter of the sensed magnetic field does not meet the predetermined criteria, the device ignores the configuration command.
    Type: Application
    Filed: December 7, 2015
    Publication date: June 8, 2017
    Applicant: Allegro Microsystems, LLC
    Inventors: Jesse Lapomardo, Craig S. Petrie, Matthew Regan, Michael C. Doogue
  • Patent number: 9634715
    Abstract: A network slave device includes a transceiver for communicating over a communication bus in accordance with a point-to-point network protocol. The network slave device may have an address to identify the network slave device on the network. It may also have a communication circuit configured to process a series of commands received by the transceiver and respond to a command if a position of the command in the series of commands corresponds to the address of the network slave device. A master device communicating on the network may send the series of command in accordance with the point-to-point network protocol. In an embodiment, the point-to-point protocol is the SENT protocol.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: April 25, 2017
    Assignee: Allegro Microsystems, LLC
    Inventors: Ricardo Scheinkerman, Nevenka Kozomora, Michael C. Doogue, Richard Vreeland
  • 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: 9625534
    Abstract: Apparatuses for detecting the strength of magnetic fields may include a first magnetic field detection circuit that produces a first signal indicating a strength of a magnetic field, and a second magnetic field detection circuit that can be turned on and off, and produces a second signal indicating the strength of the magnetic field. A control circuit may be configured to determine whether the first signal indicates a change greater than a predetermined amount in the strength of the magnetic field. If the change is greater than the predetermined amount, the control circuit may turn on the second magnetic field detection circuit. The control circuit may turn off the second magnetic field detection circuit to conserve power if the strength of the magnetic field is relatively stable. Methods for detecting the strength of the magnetic field are also disclosed.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: April 18, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventors: Bryan Cadugan, Michael C. Doogue
  • 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
  • Patent number: 9383425
    Abstract: Methods and apparatus for an integrated circuit having a magnetic sensing element, a fault detection module including circuitry to detect a fault condition and to self-test operation of the circuitry to detect the fault. The integrated circuit includes a fault pin to indicate the fault condition.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: July 5, 2016
    Assignee: Allegro Microsystems, LLC
    Inventors: Shaun D. Milano, Thomas Kerdraon, Georges El Bacha, Michael Gaboury, Michael C. Doogue
  • Publication number: 20160172584
    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: Application
    Filed: February 22, 2016
    Publication date: June 16, 2016
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Shaun D. Milano, Michael C. Doogue, William P. Taylor
  • Publication number: 20160097825
    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: Application
    Filed: October 3, 2014
    Publication date: April 7, 2016
    Applicant: Allegro Microsystems, LLC
    Inventors: Craig S. Petrie, Bryan Cadugan, David Toebes, Michael C. Doogue, William P. Taylor
  • Patent number: 9299915
    Abstract: Methods and apparatus to provide an integrated circuit package having a conductive leadframe, a non-conductive die paddle mechanically coupled to the leadframe, and a die disposed on the die paddle and electrically connected to the leadframe. With this arrangement, eddy currents are reduced near the magnetic field transducer to reduce interference with magnetic fields.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: March 29, 2016
    Assignee: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Shaun D. Milano, Michael C. Doogue, William P. Taylor
  • Patent number: 9182456
    Abstract: A magnetic field sensor uses an angle sensor to measure and angle of rotation of a target object to which a magnet is attached. The angle sensor in combination with electronics can generate an angle sensor output signal related to a direction of a magnetic field of the magnet. The angle sensor output signal can be compared to thresholds to generate a magnetic field sensor output signal the same as a known true power on state (TPOS) sensor output signal. A corresponding method is also described.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: November 10, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Eric Shoemaker, Michael C. Doogue, Andreas P. Friedrich, Andrea Foletto