Patents Assigned to Enpirion, Inc.
  • 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: 9627028
    Abstract: An apparatus including a memory module and power converter and method of operating the same. In one embodiment, the apparatus includes a memory module, located on a circuit board, configured to operate from a first voltage and a second voltage being a multiple of the first voltage. The apparatus also includes a power converter employing a switched-capacitor power train, located on the circuit board, configured to provide the second voltage for the memory module from the first voltage.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: April 18, 2017
    Assignee: Enpirion, Inc.
    Inventors: Narciso Mera, Douglas Dean Lopata, Ashraf W. Lotfi
  • Patent number: 9611561
    Abstract: An electroplating cell employable with an electroplating tool and method of operating the same. In one embodiment, the electroplating cell includes a cover configured to substantially seal the electroplating cell to an outside atmosphere during an electroplating process, and a porous tube couplable to an inert gas source configured to bubble an inert gas through an electrolyte containable therein. The electroplating cell also includes an anode, encased in an envelope of a semipermeable membrane, formed with an alloy of electroplating material, and a magnet configured to orient an axis of magnetization of the electroplating material for application to a wafer couplable thereto during an electroplating process.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: April 4, 2017
    Assignee: Enpirion, Inc.
    Inventors: Trifon M. Liakopoulos, Robert W. Filas, Amrit Panda
  • 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
  • Publication number: 20160211069
    Abstract: A micromagnetic device includes a first insulating layer formed above a substrate, a first seed layer formed above the first insulating layer, a first conductive winding layer selectively formed above the first seed layer, and a second insulating layer formed above the first conductive winding layer. The micromagnetic device also includes a first magnetic core layer formed above the second insulating layer, a third insulating layer formed above the first magnetic core layer, and a second magnetic core layer formed above the third insulating layer. The micromagnetic device still further includes a fourth insulating layer formed above the second magnetic core layer, a second seed layer formed above the fourth insulating layer, and a second conductive winding layer formed above the second seed layer and in vias to the first conductive winding layer. The first and second conductive winding layers form a winding for the micromagnetic device.
    Type: Application
    Filed: March 28, 2016
    Publication date: July 21, 2016
    Applicant: Enpirion Inc.
    Inventors: Ashraf W. Lotfi, Trifon M. Liakopoulos, Robert W. Filas, Amrit Panda
  • Patent number: 9299489
    Abstract: A micromagnetic device includes a first insulating layer formed above a substrate, a first seed layer formed above the first insulating layer, a first conductive winding layer selectively formed above the first seed layer, and a second insulating layer formed above the first conductive winding layer. The micromagnetic device also includes a first magnetic core layer formed above the second insulating layer, a third insulating layer formed above the first magnetic core layer, and a second magnetic core layer formed above the third insulating layer. The micromagnetic device still further includes a fourth insulating layer formed above the second magnetic core layer, a second seed layer formed above the fourth insulating layer, and a second conductive winding layer formed above the second seed layer and in vias to the first conductive winding layer. The first and second conductive winding layers form a winding for the micromagnetic device.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: March 29, 2016
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Trifon M. Liakopoulos, Robert W. Filas, Amrit Panda
  • 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
  • Patent number: 9246390
    Abstract: A power converter and method of controlling the same for selected modes of operation. In one embodiment, the power converter includes a first power switch coupled to a source of electrical power and a second power switch coupled to the first power switch and to an output terminal of the power converter. The power converter also includes a controller configured to control an operation of the first and second power switches during selected modes of operation.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: January 26, 2016
    Assignee: Enpirion, Inc.
    Inventors: Douglas Dean Lopata, Ashraf W. Lotfi
  • Patent number: 9054086
    Abstract: A module having a discrete passive element and a semiconductor device, and method of forming the same. In one embodiment, the module includes a patterned leadframe, a discrete passive element mounted on an upper surface of the leadframe, and a thermally conductive, electrically insulating material formed on an upper surface of the discrete passive element. The module also includes a semiconductor device bonded to an upper surface of the thermally conductive, electrically insulating material.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: June 9, 2015
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Douglas Dean Lopata, John David Weld, Mathew A. Wilkowski
  • Patent number: 8987815
    Abstract: An integrated circuit with a transistor advantageously embodied in a laterally diffused metal oxide semiconductor device having a gate located over a channel region recessed into a semiconductor substrate and a method of forming the same. In one embodiment, the transistor includes a source/drain including a lightly or heavily doped region adjacent the channel region, and an oppositely doped well extending under the channel region and a portion of the lightly or heavily doped region of the source/drain. The transistor also includes a channel extension, within the oppositely doped well, under the channel region and extending under a portion of the lightly or heavily doped region of the source/drain.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: March 24, 2015
    Assignee: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Douglas D. Lopata, William W. Troutman, Tanya Nigam
  • Publication number: 20140369147
    Abstract: An apparatus including a memory module and power converter and method of operating the same. In one embodiment, the apparatus includes a memory module, located on a circuit board, configured to operate from a first voltage and a second voltage being a multiple of the first voltage. The apparatus also includes a power converter employing a switched-capacitor power train, located on the circuit board, configured to provide the second voltage for the memory module from the first voltage.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 18, 2014
    Applicant: ENPIRION, INC.
    Inventors: Narciso Mera, Douglas Dean Lopata, Ashraf W. Lotfi
  • Patent number: 8867295
    Abstract: An apparatus including a memory module and power converter and method of operating the same. In one embodiment, the apparatus includes a memory module, located on a circuit board, configured to operate from a first voltage and a second voltage being a multiple of the first voltage. The apparatus also includes a power converter employing a switched-capacitor power train, located on the circuit board, configured to provide the second voltage for the memory module from the first voltage.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: October 21, 2014
    Assignee: Enpirion, Inc.
    Inventors: Narciso Mera, Douglas Dean Lopata, Ashraf W. Lotfi
  • Publication number: 20140253058
    Abstract: A controller for use with a power converter including a switch configured to conduct to provide a regulated output characteristic at an output of the power converter, and method of operating the same. In one embodiment, the controller includes a linear control circuit, coupled to the output, configured to provide a first control signal for the switch as a function of the output characteristic. The controller also includes a nonlinear control circuit, coupled to the output, configured to provide a second control signal for the switch as a function of the output characteristic. The controller is configured to select one of the first and second control signals for the switch in response to a change in an operating condition of the power converter.
    Type: Application
    Filed: April 30, 2014
    Publication date: September 11, 2014
    Applicant: ENPIRION, INC.
    Inventors: Pedro Alou Cervera, Jose Antonio Cobos Marquez, Ashraf W. Lotfi, Andres Soto del Pecho
  • Publication number: 20140225191
    Abstract: A transistor advantageously embodied in a laterally diffused metal oxide semiconductor device having a gate located over a channel region recessed into a semiconductor substrate and a method of forming the same. In one embodiment, the laterally diffused metal oxide semiconductor device includes a source/drain having a lightly doped region located adjacent the channel region and a heavily doped region located adjacent the lightly doped region. The laterally diffused metal oxide semiconductor device further includes an oppositely doped well located under and within the channel region, and a doped region, located between the heavily doped region and the oppositely doped well, having a doping concentration profile less than a doping concentration profile of the heavily doped region.
    Type: Application
    Filed: April 15, 2014
    Publication date: August 14, 2014
    Applicant: Enpirion, Inc.
    Inventors: Ashraf W. Lotfi, Jian Tian
  • 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: 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
  • 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