Patents by Inventor John D. Weld

John D. Weld 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: 10304615
    Abstract: A method of forming a power module located on a conductive substrate by providing power conversion circuitry. The method of providing the power conversion circuitry includes forming a magnetic device by placing a magnetic core proximate a conductive substrate with a surface thereof facing a conductive substrate, and placing a conductive clip proximate a surface of the magnetic core. The method of forming the magnetic device also includes electrically coupling ends of the conductive clip to the conductive substrate to cooperatively form a winding therewith about the magnetic core. The method of providing the power conversion circuitry also includes providing at least one switch on the conductive substrate. The method of forming the power module also includes depositing an encapsulant about the power conversion circuitry.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: May 28, 2019
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Mathew A. Wilkowski, Trifon M. Liakopoulos, John D. Weld
  • Patent number: 9673135
    Abstract: A semiconductor device having substantially minor-symmetric terminals and methods of forming the same. In one embodiment, the semiconductor device includes a semiconductor switch having a control node and a switched node, the switched node being coupled to first and second output terminals of the semiconductor device, the first and second output terminals being positioned in a substantially minor-symmetric arrangement on the semiconductor device. The semiconductor device also includes a control element having first and second input nodes and an output node, the first and second input nodes being coupled to first and second input terminals, respectively, of the semiconductor device and the output node being coupled to the control node of the semiconductor switch, the first and second input terminals being substantially center-positioned on the semiconductor device.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: June 6, 2017
    Assignee: Altera Corporation
    Inventors: John D. Weld, Douglas Dean Lopata, Wei Zhang
  • Patent number: 9553081
    Abstract: A semiconductor device and method of forming the same including, in one embodiment, a semiconductor die formed with a plurality of laterally diffused metal oxide semiconductor (“LDMOS”) cells. The semiconductor device also includes a redistribution layer electrically coupled to the plurality of LDMOS cells and a plurality of metallic pillars distributed over and electrically coupled to the redistribution layer.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: January 24, 2017
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Jeffrey Demski, Anatoly Feygenson, Douglas Dean Lopata, Jay Norton, John D. Weld
  • Patent number: 9443839
    Abstract: A semiconductor device and method of forming the same including, in one embodiment, a semiconductor die formed with a plurality of laterally diffused metal oxide semiconductor (“LDMOS”) cells, and a metallic layer electrically coupled to the plurality of LDMOS cells. The semiconductor device also includes a plurality of gate drivers positioned along a periphery of the semiconductor die and electrically coupled to gates of the plurality of LDMOS cells through the metallic layer.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: September 13, 2016
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Jeffrey Demski, Anatoly Feygenson, Douglas Dean Lopata, Jay Norton, John D. Weld
  • Patent number: 9299691
    Abstract: A semiconductor device and method of forming the same including, in one embodiment, a substrate and a plurality of source and drain regions formed as alternating pattern on the substrate. The semiconductor device also includes a plurality of gates formed over the substrate between and parallel to ones of the plurality of source and drain regions. The semiconductor device also includes a first plurality of alternating source and drain metallic strips formed in a first metallic layer above the substrate and parallel to and forming an electrical contact with respective ones of the plurality of source and drain regions.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: March 29, 2016
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Jeffrey Demski, Anatoly Feygenson, Douglas Dean Lopata, Jay Norton, John D. Weld
  • Publication number: 20150200155
    Abstract: A semiconductor device having substantially minor-symmetric terminals and methods of forming the same. In one embodiment, the semiconductor device includes a semiconductor switch having a control node and a switched node, the switched node being coupled to first and second output terminals of the semiconductor device, the first and second output terminals being positioned in a substantially minor-symmetric arrangement on the semiconductor device. The semiconductor device also includes a control element having first and second input nodes and an output node, the first and second input nodes being coupled to first and second input terminals, respectively, of the semiconductor device and the output node being coupled to the control node of the semiconductor switch, the first and second input terminals being substantially center-positioned on the semiconductor device.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 16, 2015
    Applicant: Altera Corporation
    Inventors: John D. Weld, Douglas Dean Lopata, Wei Zhang
  • Publication number: 20150200156
    Abstract: A module having substantially mirror-symmetric terminals and methods of forming the same. In one embodiment, the module has first and second module terminals and includes a first semiconductor device with first and second terminals in a substantially mirror-symmetric arrangement on the first semiconductor device and coupled to a first common node of the first semiconductor device. The module also includes a second semiconductor device including third and fourth terminals in a substantially mirror-symmetric arrangement on the second semiconductor device and coupled to a second common node of the second semiconductor device. At least one of the first and second terminals is coupled to the first module terminal, and at least one of the third and fourth terminals are coupled to the second module terminal. The first and second module terminals are in a substantially mirror-symmetric arrangement on the module.
    Type: Application
    Filed: January 13, 2014
    Publication date: July 16, 2015
    Applicant: ALTERA CORPORATION
    Inventors: John D. Weld, Douglas Dean Lopata, Wei Zhang
  • Publication number: 20140203903
    Abstract: A method of forming a power module located on a conductive substrate by providing power conversion circuitry. The method of providing the power conversion circuitry includes forming a magnetic device by placing a magnetic core proximate a conductive substrate with a surface thereof facing a conductive substrate, and placing a conductive clip proximate a surface of the magnetic core. The method of forming the magnetic device also includes electrically coupling ends of the conductive clip to the conductive substrate to cooperatively form a winding therewith about the magnetic core. The method of providing the power conversion circuitry also includes providing at least one switch on the conductive substrate. The method of forming the power module also includes depositing an encapsulant about the power conversion circuitry.
    Type: Application
    Filed: March 20, 2014
    Publication date: July 24, 2014
    Applicant: ENPIRION, INC.
    Inventors: Ashraf W. Lotfi, Mathew A. Wilkowski, Trifon M. Liakopoulos, John D. Weld
  • Publication number: 20140159130
    Abstract: An apparatus and method of forming the same including, in one embodiment, a printed circuit board and a semiconductor device coupled to the printed circuit board. The apparatus also includes a decoupling device coupled to the printed circuit board and positioned under the semiconductor device.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 12, 2014
    Applicant: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Jeffrey Demski, Anatoly Feygenson, Douglas Dean Lopata, Jay Norton, John D. Weld
  • Publication number: 20140151794
    Abstract: A semiconductor device and method of forming the same including, in one embodiment, a semiconductor die formed with a plurality of laterally diffused metal oxide semiconductor (“LDMOS”) cells. The semiconductor device also includes a redistribution layer electrically coupled to the plurality of LDMOS cells and a plurality of metallic pillars distributed over and electrically coupled to the redistribution layer.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Jeffrey Demski, Anatoly Feygenson, Douglas Dean Lopata, Jay Norton, John D. Weld
  • Publication number: 20140151797
    Abstract: A semiconductor device and method of forming the same including, in one embodiment, a substrate and a plurality of source and drain regions formed as alternating pattern on the substrate. The semiconductor device also includes a plurality of gates formed over the substrate between and parallel to ones of the plurality of source and drain regions. The semiconductor device also includes a first plurality of alternating source and drain metallic strips formed in a first metallic layer above the substrate and parallel to and forming an electrical contact with respective ones of the plurality of source and drain regions.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Jeffrey Demski, Anatoly Feygenson, Douglas Dean Lopata, Jay Norton, John D. Weld
  • Publication number: 20140151795
    Abstract: A semiconductor device and method of forming the same including, in one embodiment, a semiconductor die formed with a plurality of laterally diffused metal oxide semiconductor (“LDMOS”) cells, and a metallic layer electrically coupled to the plurality of LDMOS cells. The semiconductor device also includes a plurality of gate drivers positioned along a periphery of the semiconductor die and electrically coupled to gates of the plurality of LDMOS cells through the metallic layer.
    Type: Application
    Filed: November 27, 2013
    Publication date: June 5, 2014
    Applicant: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Jeffrey Demski, Anatoly Feygenson, Douglas Dean Lopata, Jay Norton, John D. Weld
  • Patent number: 8701272
    Abstract: A method of forming a power module located on a conductive substrate by providing power conversion circuitry. The method of providing the power conversion circuitry includes forming a magnetic device by placing a magnetic core proximate a conductive substrate with a surface thereof facing a conductive substrate, and placing a conductive clip proximate a surface of the magnetic core. The method of forming the magnetic device also includes electrically coupling ends of the conductive clip to the conductive substrate to cooperatively form a winding therewith about the magnetic core. The method of providing the power conversion circuitry also includes providing at least one switch on the conductive substrate. The method of forming the power module also includes depositing an encapsulant about the power conversion circuitry.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: April 22, 2014
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Mathew A. Wilkowski, Trifon M. Liakopoulos, John D. Weld
  • Patent number: 8631560
    Abstract: A method of forming a magnetic device by providing a conductive substrate and placing a magnetic core proximate the conductive substrate with a surface thereof facing the conductive substrate. The method also includes placing a conductive clip proximate a surface of the magnetic core and electrically coupling ends of the conductive clip to the conductive substrate to cooperatively form a winding therewith about the magnetic core.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: January 21, 2014
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Mathew A. Wilkowski, Trifon M. Liakopoulos, John D. Weld
  • Patent number: 8528190
    Abstract: A method of manufacturing a power module on a substrate. In one embodiment, the method includes providing power conversion circuitry including providing a magnetic device having a magnetic core and at least one switch on the substrate. The method also includes placing a shielding structure with a baffle over the magnetic core to create a chamber thereabout. The method also includes depositing an encapsulant about the power conversion circuitry. The shielding structure limits the encapsulant entering the chamber and the baffle directs the encapsulant away from the magnetic core thereby limiting an amount of the encapsulant that contacts the magnetic core within the chamber.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: September 10, 2013
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Mathew Wilkowski, John D. Weld
  • Patent number: 8384506
    Abstract: A magnetic device that includes a magnetic core having a surface facing a conductive substrate. The magnetic device also includes a conductive clip facing a surface of the magnetic core with ends of the conductive clip electrically coupled to the conductive substrate to cooperatively form a winding therewith about the magnetic core.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: February 26, 2013
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Mathew A. Wilkowski, Trifon M. Liakopoulos, John D. Weld
  • Patent number: 8139362
    Abstract: A power module located on a conductive substrate including power conversion circuitry. The power conversion circuitry includes a magnetic device and at least one switch. The magnetic device includes a magnetic core having a surface facing the conductive substrate and a conductive clip facing a surface of the magnetic core with ends of the conductive clip electrically coupled to the conductive substrate to cooperatively form a winding therewith about the magnetic core. The power module also includes an encapsulant about the power conversion circuitry.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: March 20, 2012
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Mathew A. Wilkowski, Trifon M. Liakopoulos, John D. Weld
  • Patent number: 8043544
    Abstract: A method of manufacturing an encapsulated package for a magnetic device on a substrate. In one embodiment, the method includes providing a magnetic core on the substrate and placing a shielding structure over the magnetic core to create a chamber thereabout. The method also includes depositing an encapsulant about a portion of the magnetic core within the chamber. The shielding structure limits the encapsulant entering the chamber.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: October 25, 2011
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Mathew Wilkowski, John D. Weld
  • Publication number: 20100176905
    Abstract: A magnetic device that includes a magnetic core having a surface facing a conductive substrate. The magnetic device also includes a conductive clip facing a surface of the magnetic core with ends of the conductive clip electrically coupled to the conductive substrate to cooperatively form a winding therewith about the magnetic core.
    Type: Application
    Filed: March 25, 2010
    Publication date: July 15, 2010
    Inventors: Ashraf W. Lotfi, Mathew A. Wilkowski, Trifon M. Liakopoulos, John D. Weld
  • Patent number: 7688172
    Abstract: A magnetic device that includes a magnetic core having a surface facing a conductive substrate. The magnetic device also includes a conductive clip facing a surface of the magnetic core with ends of the conductive clip electrically coupled to the conductive substrate to cooperatively form a winding therewith about the magnetic core.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: March 30, 2010
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Mathew A. Wilkowski, Trifon M. Liakopoulos, John D. Weld