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).

  • Patent number: 9172565
    Abstract: In one aspect, a system includes a master component having a communication node; and a plurality of slave components. Each slave component has a bidirectional node. The slave components are configured to each store data in response to a trigger signal received at the bidirectional node from the communication node.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: October 27, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Bryan Cadugan, Michael C. Doogue, Mark J. Donovan
  • Patent number: 9151807
    Abstract: A magnetic field sensor includes built in self-test circuits that allow a self-test of most of, or all of, the circuitry of the magnetic field sensor, including self-test of a magnetic field sensing element used within the magnetic field sensor, while the magnetic field sensor is functioning in normal operation.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: October 6, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Andreas P. Friedrich, Andrea Foletto, Michael C. Doogue, William P. Taylor, Ravi Vig, P. Karl Scheller
  • Publication number: 20150243882
    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: May 8, 2015
    Publication date: August 27, 2015
    Applicant: Allegro MicroSystems, LLC
    Inventors: Michael C. Doogue, William P. Taylor, Vijay Mangtani
  • Publication number: 20150236746
    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: Application
    Filed: March 12, 2015
    Publication date: August 20, 2015
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Ricardo Scheinkerman, Nevenka Kozomora, Michael C. Doogue, Richard Vreeland
  • Publication number: 20150236876
    Abstract: In one aspect, a system includes a master component having a communication node; and a plurality of slave components. Each slave component has a bidirectional node. The slave components are configured to each store data in response to a trigger signal received at the bidirectional node from the communication node.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 20, 2015
    Applicant: Allegro Microsystems, LLC
    Inventors: Bryan Cadugan, Michael C. Doogue, Mark J. Donovan
  • Publication number: 20150236869
    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: Application
    Filed: March 12, 2015
    Publication date: August 20, 2015
    Applicant: Allegro MicroSystems, LLC
    Inventors: Richard Vreeland, Nevenka Kozomora, Michael C. Doogue, Ricardo Scheinkerman
  • Patent number: 9081041
    Abstract: A sensor with multiple magnetic field sensing elements for use in current sensing and other applications is presented. In one configuration, the sensor can obtain differential and absolute current measurements of current in current-carrying conductors. When employed in a ground fault interrupter (GFI) application, a first magnetic field sensing element can be used to measure the absolute current flowing in the phase conductor (phase current), a second magnetic field sensing element can be used to measure the absolute current flowing in the neutral conductor (neutral current) and a difference between the phase and neutral currents can be measured by a third magnetic field sensing element or determined from measurements of the first and second magnetic field sensing elements. In another configuration, the sensor can obtain a measure of the difference between currents and/or the sum of currents in current-carrying conductors.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: July 14, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Andreas P. Friedrich, Andrea Foletto, P. Karl Scheller, William P. Taylor, Michael C. Doogue
  • Patent number: 9082957
    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: June 14, 2013
    Date of Patent: July 14, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Michael C. Doogue, William P. Taylor, Vijay Mangtani
  • Publication number: 20150185279
    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: Application
    Filed: December 22, 2014
    Publication date: July 2, 2015
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Shaun D. Milano, Georges El Bacha, Michael C. Doogue, William P. Taylor
  • Publication number: 20150185284
    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: Application
    Filed: December 22, 2014
    Publication date: July 2, 2015
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Shaun D. Milano, Georges El Bacha, Michael C. Doogue, William P. Taylor
  • Publication number: 20150185293
    Abstract: Methods and apparatus for providing an integrated circuit having a drive current source, a magnetic sensing element coupled to the drive current source, the magnetic sensing element having first and second differential outputs, and first and second current elements to provide respective currents in relation to the drive current source, wherein the first current element is coupled to the first differential output and the second current element is coupled to the second differential output. In illustrative embodiments, an IC output can output a voltage corresponding to the currents of the first and second current elements.
    Type: Application
    Filed: December 22, 2014
    Publication date: July 2, 2015
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Shaun D. Milano, Georges El Bacha, Michael C. Doogue, David J. Haas, Gregory Delmain, Michael Gaboury, William P. Taylor
  • Patent number: 9007054
    Abstract: An angle sensor to provide sensor-to-magnet misalignment detection and correction capability in rotation angle measurement applications is presented. The angle sensor has magnetic field sensing elements to sense magnetic field associated with a rotating magnet. The angle sensor includes circuitry to generate signals based on the sensing by the sensing elements. The signals provide information that can be combined according to an error function to provide misalignment detection. The angle sensor can be used with or can be incorporated in an angle measurement device that employs a processing unit to produce a rotation angle value. In one embodiment, the processing unit is configured to implement the error function and correct the angle value for detected misalignment. In another embodiment, the error function is performed by a programming device and detected misalignment is corrected through mechanical adjustment of sensor-to-magnet position.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: April 14, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Andreas P. Friedrich, Andrea Foletto, P. Karl Scheller, William P. Taylor, Michael C. Doogue
  • Patent number: 8952471
    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: June 14, 2013
    Date of Patent: February 10, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Michael C. Doogue, William P. Taylor, Vijay Mangtani
  • Patent number: 8896295
    Abstract: A sensor with multiple magnetic field sensing elements for use in current sensing and other applications is presented. The sensor includes an arrangement of two or more magnetic field sensing elements to sense magnetic field associated with a target. The sensor further includes circuitry to generate a sensor output signal based on sensing of at least one of the magnetic field sensing elements of the arrangement. Also included is a programmable misalignment adjustment block to control the circuitry to generate the output signal with compensation for misalignment between the sensor and the target. The programmable misalignment adjustment block can be programmed to select measurement of one of the two or more magnetic field sensing elements, or alternatively, a mathematical combination of measurements of the two or more magnetic field sensing elements, for generating the sensor output signal when a test of the sensor indicates a misalignment.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: November 25, 2014
    Assignee: Allegro Microsystems, LLC
    Inventors: Andreas P. Friedrich, Andrea Foletto, P. Karl Scheller, William P. Taylor, Michael C. Doogue
  • Publication number: 20140312883
    Abstract: A magnetic field sensor includes built in self-test circuits that allow a self-test of most of, or all of, the circuitry of the magnetic field sensor, including self-test of a magnetic field sensing element used within the magnetic field sensor, while the magnetic field sensor is functioning in normal operation.
    Type: Application
    Filed: July 1, 2014
    Publication date: October 23, 2014
    Applicant: ALLEGRO MICROSYSTEMS, LLC
    Inventors: Andreas P. Friedrich, Andrea Foletto, Michael C. Doogue, William P. Taylor, Ravi Vig, P. Karl Scheller
  • Publication number: 20140266181
    Abstract: Methods and apparatus for magnetic field sensor having a sensing element, an analog circuit path coupled to the sensing element for generating an output voltage in response to a magnetic field applied to the sensing element, and a coil in proximity to the sensing element, the coil having a first terminal that is accessible external to the magnetic field sensor.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: Allegro Microsystems, Inc.
    Inventors: Shaun D. Milano, Michael C. Doogue, William P. Taylor
  • Patent number: 8818749
    Abstract: A magnetic field sensor includes built in self-test circuits that allow a self-test of most of, or all of, the circuitry of the magnetic field sensor, including self-test of a magnetic field sensing element used within the magnetic field sensor, while the magnetic field sensor is functioning in normal operation.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: August 26, 2014
    Assignee: Allegro Microsystems, LLC
    Inventors: Andreas P. Friedrich, Andrea Foletto, Michael C. Doogue, William P. Taylor, Ravi Vig, P. Karl Scheller
  • Patent number: 8793085
    Abstract: A magnetic field sensor and a method used therein provide a measured signal representative of an angular speed of rotation of a target object. The magnetic field sensor, in accordance with the measured speed of rotation, can automatically change various characteristics of the magnetic field sensor.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: July 29, 2014
    Assignee: Allegro Microsystems, LLC
    Inventors: Mark J. Donovan, Michael C. Doogue, Ryan Metivier
  • Patent number: 8773123
    Abstract: A magnetic field sensor includes a linear magnetic field sensor to produce a voltage proportional to a sensed magnetic field and an interface having only two terminals for external connections. The two terminals of the interface include a power supply terminal and a ground terminal. The interface includes a voltage-controlled current generating device that is connected between the two terminals and is controlled by the voltage to provide a current signal that is proportional to the sensed magnetic field.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: July 8, 2014
    Assignee: Allegro Microsystems, LLC
    Inventors: Michael C. Doogue, Jonathan Lamarre, Monica J. Thomas
  • Publication number: 20140184200
    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: Application
    Filed: December 28, 2012
    Publication date: July 3, 2014
    Inventors: Shaun D. Milano, Thomas Kerdraon, Georges El Bacha, Michael Gaboury, Michael C. Doogue