Patents by Inventor Siddharth Kiyawat

Siddharth Kiyawat 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: 10879230
    Abstract: A Schottky diode includes a cathode terminal in a high voltage region of a semiconductor die, an anode terminal in a low voltage region of the semiconductor die, where the anode terminal and the cathode terminal are separated by a junction isolation termination situated between the high voltage region and the low voltage region. The Schottky diode includes a junction barrier Schottky diode or a trench metal-oxide-semiconductor (MOS) Schottky diode. The junction isolation termination includes pzener rings. The semiconductor die includes a substrate of a first conductivity type, an epitaxial layer of a second conductivity type situated on the substrate, a well region of the second conductivity type situated in the epitaxial layer in the high voltage region, and coupled to the cathode terminal, a Schottky barrier situated on the epitaxial layer in the low voltage region, and coupled to the anode terminal.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: December 29, 2020
    Assignee: Infineon Technologies Americas Corp.
    Inventors: Donald He, Niraj Ranjan, Siddharth Kiyawat, Min Fang
  • Publication number: 20170365595
    Abstract: A Schottky diode includes a cathode terminal in a high voltage region of a semiconductor die, an anode terminal in a low voltage region of the semiconductor die, where the anode terminal and the cathode terminal are separated by a junction isolation termination situated between the high voltage region and the low voltage region. The Schottky diode includes a junction barrier Schottky diode or a trench metal-oxide-semiconductor (MOS) Schottky diode. The junction isolation termination includes pzener rings. The semiconductor die includes a substrate of a first conductivity type, an epitaxial layer of a second conductivity type situated on the substrate, a well region of the second conductivity type situated in the epitaxial layer in the high voltage region, and coupled to the cathode terminal, a Schottky barrier situated on the epitaxial layer in the low voltage region, and coupled to the anode terminal.
    Type: Application
    Filed: June 17, 2016
    Publication date: December 21, 2017
    Inventors: Donald He, Niraj Ranjan, Siddharth Kiyawat, Min Fang
  • Publication number: 20170279449
    Abstract: A semiconductor device includes a low voltage region, a high voltage region monolithically integrated with the low voltage region in a semiconductor substrate, where the low voltage region is electrically coupled to the high voltage region through a capacitive isolation barrier, where the high voltage region is structurally isolated from the low voltage region by an isolation structure. The isolation structure includes a junction termination structure, a deep trench structure, or a reduced surface field (RESURF) structure. The isolation structure forms an isolation ring substantially enclosing the high voltage region in the semiconductor substrate. The low voltage region is configured to provide a differential signal to the high voltage region through the capacitive isolation barrier. The high voltage region is configured to receive a differential signal from the low voltage region through the capacitive isolation barrier so as to level shift the differential signal.
    Type: Application
    Filed: March 25, 2016
    Publication date: September 28, 2017
    Inventors: Min Fang, Niraj Ranjan, Siddharth Kiyawat, Donald He, Praveen Kumar Kalsani
  • Patent number: 7557395
    Abstract: A trench power semiconductor device including a recessed termination structure.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: July 7, 2009
    Assignee: International Rectifier Corporation
    Inventors: Ling Ma, Adam Amali, Siddharth Kiyawat, Ashita Mirchandani, Donald He, Naresh Thapar, Ritu Sodhi, Kyle Spring, Daniel Kinzer
  • Patent number: 6921699
    Abstract: A process for manufacturing a semiconductor device of the trench variety with reduced feature sizes and improved characteristics which process includes forming a termination structure having a field oxide disposed in a recess below the surface of the semiconductor die in which the active elements of the device are formed, and forming source regions after the major thermal steps have been performed.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: July 26, 2005
    Assignee: International Rectifier Corporation
    Inventors: Ling Ma, Adam Amali, Siddharth Kiyawat, Ashita Mirchandani, Donald He, Naresh Thapar, Ritu Sodhi, Kyle Spring, Daniel Kinzer
  • Publication number: 20040251491
    Abstract: A trench power semiconductor device including a recessed termination structure.
    Type: Application
    Filed: January 27, 2004
    Publication date: December 16, 2004
    Inventors: Ling Ma, Adam Amali, Siddharth Kiyawat, Ashita Mirchandani, Donald He, Naresh Thapar, Ritu Sodhi, Kyle Spring, Daniel Kinzer
  • Publication number: 20040137684
    Abstract: A process for manufacturing a semiconductor device of the trench variety with reduced feature sizes and improved characteristics which process includes forming a termination structure having a field oxide disposed in a recess below the surface of the semiconductor die in which the active elements of the device are formed, and forming source regions after the major thermal steps have been performed.
    Type: Application
    Filed: September 29, 2003
    Publication date: July 15, 2004
    Inventors: Ling Ma, Adam Amali, Siddharth Kiyawat, Ashita Mirchandani, Donald He, Naresh Thapar, Ritu Sodhi, Kyle Spring, Daniel Kinzer