Patents by Inventor Dev Alok

Dev Alok 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: 10665676
    Abstract: Body contact layouts for semiconductor structures are disclosed. In at least one exemplary embodiment, a semiconductor structure comprises: a plurality of gates disposed on a semiconductor layer, each gate extending parallel to a y-axis in a coordinate space; a source region disposed between two of the plurality of gates; a plurality of body contacts disposed in each source region; and wherein a portion of each source region, adjacent to the gate, has a width extending parallel to the y-axis that is greater than the width of the source region parallel to the y-axis at a distance on an x-axis from the gate.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: May 26, 2020
    Assignee: Intersil Americas LLC
    Inventors: Dev Alok Girdhar, Jeffrey Michael Johnston
  • Patent number: 10418481
    Abstract: One embodiment is directed towards a method. The method includes forming a drift region of a first conductivity type above or in a substrate. The substrate has first and second surfaces. A first insulator is formed over a first portion of the channel, and which has a first thickness. A second insulator is formed over the second portion of the channel, and which has a second thickness that is less than the first thickness. A first gate is formed over the first insulator. A second gate is formed over the second insulator. A body region of a second conductivity type is formed above or in the substrate.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: September 17, 2019
    Assignee: Intersil Americas LLC
    Inventor: Dev Alok Girdhar
  • Publication number: 20180248006
    Abstract: Body contact layouts for semiconductor structures are disclosed. In at least one exemplary embodiment, a semiconductor structure comprises: a plurality of gates disposed on a semiconductor layer, each gate extending parallel to a y-axis in a coordinate space; a source region disposed between two of the plurality of gates; a plurality of body contacts disposed in each source region; and wherein a portion of each source region, adjacent to the gate, has a width extending parallel to the y-axis that is greater than the width of the source region parallel to the y-axis at a distance on an x-axis from the gate.
    Type: Application
    Filed: April 25, 2018
    Publication date: August 30, 2018
    Inventors: Dev Alok GIRDHAR, Jeffrey Michael JOHNSTON
  • Patent number: 9960236
    Abstract: Methods for forming body contact layouts for semiconductor structures are disclosed. In at least one exemplary embodiment, a method comprises: forming a plurality of gates disposed on a semiconductor layer, each gate extending parallel to a y-axis in a coordinate space; a source region disposed between two of the plurality of gates; a plurality of body contacts disposed in each source region; and wherein a portion of each body contact, adjacent to the gate, has a width extending parallel to the y-axis that is less than the width of the body contact parallel to the y-axis at a distance on an x-axis from the gate.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: May 1, 2018
    Assignee: INTERSIL AMERICAS LLC
    Inventors: Dev Alok Girdhar, Jeffrey Michael Johnston
  • Publication number: 20180040728
    Abstract: One embodiment is directed towards a method. The method includes forming a drift region of a first conductivity type above or in a substrate. The substrate has first and second surfaces. A first insulator is formed over a first portion of the channel, and which has a first thickness. A second insulator is formed over the second portion of the channel, and which has a second thickness that is less than the first thickness. A first gate is formed over the first insulator. A second gate is formed over the second insulator. A body region of a second conductivity type is formed above or in the substrate.
    Type: Application
    Filed: October 20, 2017
    Publication date: February 8, 2018
    Applicant: Intersil Americas LLC
    Inventor: Dev Alok GIRDHAR
  • Patent number: 9799763
    Abstract: One embodiment is directed towards a method. The method includes forming a drift region of a first conductivity type above or in a substrate. The substrate has first and second surfaces. A first insulator is formed over a first portion of the channel, and which has a first thickness. A second insulator is formed over the second portion of the channel, and which has a second thickness that is less than the first thickness. A first gate is formed over the first insulator. A second gate is formed over the second insulator. A body region of a second conductivity type is formed above or in the substrate.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: October 24, 2017
    Assignee: INTERSIL AMERICAS LLC
    Inventor: Dev Alok Girdhar
  • Publication number: 20170069719
    Abstract: Body contact layouts for semiconductor structures are disclosed. In at least one exemplary embodiment, a semiconductor structure comprises: a plurality of gates disposed on a semiconductor layer, each gate extending parallel to a y-axis in a coordinate space; a source region disposed between two of the plurality of gates; a plurality of body contacts disposed in each source region; and wherein a portion of each source region, adjacent to the gate, has a width extending parallel to the y-axis that is greater than the width of the source region parallel to the y-axis at a distance on an x-axis from the gate.
    Type: Application
    Filed: November 16, 2016
    Publication date: March 9, 2017
    Inventors: Dev Alok Girdhar, Jeffrey Michael Johnston
  • Publication number: 20170062607
    Abstract: One embodiment is directed towards a method. The method includes forming a drift region of a first conductivity type above or in a substrate. The substrate has first and second surfaces. A first insulator is formed over a first portion of the channel, and which has a first thickness. A second insulator is formed over the second portion of the channel, and which has a second thickness that is less than the first thickness. A first gate is formed over the first insulator. A second gate is formed over the second insulator. A body region of a second conductivity type is formed above or in the substrate.
    Type: Application
    Filed: February 24, 2016
    Publication date: March 2, 2017
    Inventor: Dev Alok Girdhar
  • Patent number: 9536952
    Abstract: Body contact layouts for semiconductor structures are disclosed. In at least one exemplary embodiment, a semiconductor structure comprises: a plurality of gates disposed on a semiconductor layer, each gate extending parallel to a y-axis in a coordinate space; a source region disposed between two of the plurality of gates; a plurality of body contacts disposed in each source region; and wherein a portion of each source region, adjacent to the gate, has a width extending parallel to the y-axis that is greater than the width of the source region parallel to the y-axis at a distance on an x-axis from the gate.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: January 3, 2017
    Assignee: Intersil Americas LLC
    Inventors: Dev Alok Girdhar, Jeffrey Michael Johnston
  • Patent number: 9478442
    Abstract: An electronic system, a reduced-noise reference voltage platform for a voltage converter device, and a method of manufacture of a reduced-noise reference voltage platform for a voltage converter device are disclosed. For example, the reduced-noise reference voltage (e.g., ground) platform includes a first conductor unit, a second conductor unit, and an insulator unit interposed between a first surface of the first conductor unit and a first surface of the second conductor unit. The reduced-noise reference voltage platform also includes a phase terminal connected to the first conductor unit, and a reference voltage (e.g., ground) terminal connected to the second conductor unit, wherein a second surface of the second conductor unit forms a platform coupled to the reference voltage (e.g., ground).
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: October 25, 2016
    Assignee: Intersil Americas LLC
    Inventor: Dev Alok Girdhar
  • Publication number: 20150325652
    Abstract: Body contact layouts for semiconductor structures are disclosed. In at least one exemplary embodiment, a semiconductor structure comprises: a plurality of gates disposed on a semiconductor layer, each gate extending parallel to a y-axis in a coordinate space; a source region disposed between two of the plurality of gates; a plurality of body contacts disposed in each source region; and wherein a portion of each source region, adjacent to the gate, has a width extending parallel to the y-axis that is greater than the width of the source region parallel to the y-axis at a distance on an x-axis from the gate.
    Type: Application
    Filed: January 6, 2015
    Publication date: November 12, 2015
    Inventors: Dev Alok Girdhar, Jeffrey Michael Johnston
  • Publication number: 20150214073
    Abstract: An electronic system, a reduced-noise reference voltage platform for a voltage converter device, and a method of manufacture of a reduced-noise reference voltage platform for a voltage converter device are disclosed. For example, the reduced-noise reference voltage (e.g., ground) platform includes a first conductor unit, a second conductor unit, and an insulator unit interposed between a first surface of the first conductor unit and a first surface of the second conductor unit. The reduced-noise reference voltage platform also includes a phase terminal connected to the first conductor unit, and a reference voltage (e.g., ground) terminal connected to the second conductor unit, wherein a second surface of the second conductor unit forms a platform coupled to the reference voltage (e.g., ground).
    Type: Application
    Filed: April 10, 2015
    Publication date: July 30, 2015
    Inventor: Dev Alok Girdhar
  • Patent number: 9036442
    Abstract: An electronic system, a reduced-noise reference voltage platform for a voltage converter device, and a method of manufacture of a reduced-noise reference voltage platform for a voltage converter device are disclosed. For example, the reduced-noise reference voltage (e.g., ground) platform includes a first conductor unit, a second conductor unit, and an insulator unit interposed between a first surface of the first conductor unit and a first surface of the second conductor unit. The reduced-noise reference voltage platform also includes a phase terminal connected to the first conductor unit, and a reference voltage (e.g., ground) terminal connected to the second conductor unit, wherein a second surface of the second conductor unit forms a platform coupled to the reference voltage (e.g., ground).
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: May 19, 2015
    Assignee: Intersil Americas LLC
    Inventor: Dev Alok Girdhar
  • Patent number: 8884367
    Abstract: A power semiconductor device which includes a source field electrode, and at least one insulated gate electrode adjacent a respective side of the source field electrode, the source field electrode and the gate electrode being disposed in a common trench.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: November 11, 2014
    Assignee: International Rectifier Corporation
    Inventors: Dev Alok Girdhar, Timothy Donald Henson
  • Patent number: 8647971
    Abstract: An integrated circuit, including a junction barrier Schottky diode, has an N type well, a P-type anode region in the surface of the well, and an N-type Schottky region in the surface of the well and horizontally abutting the anode region. A first silicide layer is on and makes a Schottky contact to the Schottky region and is on an adjoining anode region. A second silicide layer of a different material than the first silicide is on the anode region. An ohmic contact is made to the second silicide on the anode region and to the well.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: February 11, 2014
    Assignee: Intersil Americas Inc.
    Inventors: Dev Alok Girdhar, Michael David Church, Alexander Kalnitsky
  • Publication number: 20140003179
    Abstract: An electronic system, a reduced-noise reference voltage platform for a voltage converter device, and a method of manufacture of a reduced-noise reference voltage platform for a voltage converter device are disclosed. For example, the reduced-noise reference voltage (e.g., ground) platform includes a first conductor unit, a second conductor unit, and an insulator unit interposed between a first surface of the first conductor unit and a first surface of the second conductor unit. The reduced-noise reference voltage platform also includes a phase terminal connected to the first conductor unit, and a reference voltage (e.g., ground) terminal connected to the second conductor unit, wherein a second surface of the second conductor unit forms a platform coupled to the reference voltage (e.g., ground).
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: INTERSIL AMERICAS LLC
    Inventor: Dev Alok Girdhar
  • Patent number: 8546221
    Abstract: A voltage converter includes an output circuit having a high side device and a low side device which can be formed on a single die (i.e. a “PowerDie”) and connected to each other through a semiconductor substrate. Both the high side device and the low side device can include lateral diffused metal oxide semiconductor (LDMOS) transistors. Because both output transistors include the same type of transistors, the two devices can be formed simultaneously, thereby reducing the number of photomasks over other voltage converter designs. The voltage converter can further include a controller circuit on a different die which can be electrically coupled to, and co-packaged with, the PowerDie.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: October 1, 2013
    Assignee: Intersil Americas Inc.
    Inventors: Dev Alok Girdhar, Francois Hebert
  • Patent number: 8492225
    Abstract: A method and structure for a voltage converter including a trench field effect transistor (FET) and a trench guarded Schottky diode which is integrated with the trench FET. In an embodiment, a voltage converter can include a lateral FET, a trench FET, and a trench guarded Schottky diode integrated with the trench FET. A method to form a voltage converter can include the formation of a trench FET gate, a trench guarded Schottky diode gate, and a lateral FET gate using a single conductive layer such as a polysilicon layer.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: July 23, 2013
    Assignee: Intersil Americas Inc.
    Inventors: Dev Alok Girdhar, Francois Hebert
  • Patent number: 8368166
    Abstract: A junction barrier Schottky diode has N-type well having a surface and first peak impurity concentration; P-type anode region in surface of the well having second peak impurity concentration; N-type cathode contact region in surface of the well and laterally spaced from a first wall of the anode region having third peak impurity concentration; and first N-type region in surface of the well and laterally spaced from second wall of the anode region having fourth impurity concentration. Center of the spaced region between the first N-type region and the second wall of the anode region has fifth peak impurity concentration. Ohmic contact is made to the anode region and cathode contact region. Schottky contact is made to the first N-type region. First and fifth peak impurity concentrations are less than the fourth peak impurity concentration. The fourth peak impurity concentration is less than the second and third peak impurity concentrations.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: February 5, 2013
    Assignee: Intersil Americas Inc.
    Inventors: Dev Alok Girdhar, Michael David Church
  • Patent number: 8362555
    Abstract: A voltage converter includes an output circuit having a high side device and a low side device which can be formed on a single die (i.e. a “PowerDie”) and connected to each other through a semiconductor substrate. Both the high side device and the low side device can include lateral diffused metal oxide semiconductor (LDMOS) transistors. Because both output transistors include the same type of transistors, the two devices can be formed simultaneously, thereby reducing the number of photomasks over other voltage converter designs. The voltage converter can further include a controller circuit on a different die which can be electrically coupled to, and co-packaged with, the PowerDie.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: January 29, 2013
    Assignee: Intersil Americas Inc.
    Inventors: Dev Alok Girdhar, Francois Hebert