Patents by Inventor Mohammed Tanvir Quddus

Mohammed Tanvir Quddus 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).

  • Publication number: 20140319644
    Abstract: A diode (200) is disclosed having improved efficiency, smaller form factor, and reduced reverse biased leakage current. Schottky diodes (212) are formed on the sidewalls (210) of a mesa region (206). The mesa region (206) is a cathode of the Schottky diode (212). The current path through the mesa region (206) has a lateral and a vertical current path. The diode (200) further comprises a MOS structure (214), p-type regions (220), MOS structures (230), and p-type regions (232). MOS structure (214) with the p-type regions (220) pinch-off the lateral current path under reverse bias conditions. P-type regions (220), MOS structures (230), and p-type regions (232) each pinch-off the vertical current path under reverse bias conditions. MOS structure (214) and MOS structures (230) reduce resistance of the lateral and vertical current path under forward bias conditions. The mesa region (206) can have a uniform or non-uniform doping concentration.
    Type: Application
    Filed: July 15, 2014
    Publication date: October 30, 2014
    Inventors: Gordon M. Grivna, Jefferson W. Hall, Mohammed Tanvir Quddus
  • Patent number: 8815682
    Abstract: A diode (200) is disclosed having improved efficiency, smaller form factor, and reduced reverse biased leakage current. Schottky diodes (212) are formed on the sidewalls (210) of a mesa region (206). The mesa region (206) is a cathode of the Schottky diode (212). The current path through the mesa region (206) has a lateral and a vertical current path. The diode (200) further comprises a MOS structure (214), p-type regions (220), MOS structures (230), and p-type regions (232). MOS structure (214) with the p-type regions (220) pinch-off the lateral current path under reverse bias conditions. P-type regions (220), MOS structures (230), and p-type regions (232) each pinch-off the vertical current path under reverse bias conditions. MOS structure (214) and MOS structures (230) reduce resistance of the lateral and vertical current path under forward bias conditions. The mesa region (206) can have a uniform or non-uniform doping concentration.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: August 26, 2014
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Gordon M. Grivna, Jefferson W. Hall, Mohammed Tanvir Quddus
  • Publication number: 20130288449
    Abstract: A diode (200) is disclosed having improved efficiency, smaller form factor, and reduced reverse biased leakage current. Schottky diodes (212) are formed on the sidewalls (210) of a mesa region (206). The mesa region (206) is a cathode of the Schottky diode (212). The current path through the mesa region (206) has a lateral and a vertical current path. The diode (200) further comprises a MOS structure (214), p-type regions (220), MOS structures (230), and p-type regions (232). MOS structure (214) with the p-type regions (220) pinch-off the lateral current path under reverse bias conditions. P-type regions (220), MOS structures (230), and p-type regions (232) each pinch-off the vertical current path under reverse bias conditions. MOS structure (214) and MOS structures (230) reduce resistance of the lateral and vertical current path under forward bias conditions. The mesa region (206) can have a uniform or non-uniform doping concentration.
    Type: Application
    Filed: June 28, 2013
    Publication date: October 31, 2013
    Inventors: Gordon M. Grivna, Jefferson W. Hall, Mohammed Tanvir Quddus
  • Patent number: 8502336
    Abstract: A diode (200) is disclosed having improved efficiency, smaller form factor, and reduced reverse biased leakage current. Schottky diodes (212) are formed on the sidewalls (210) of a mesa region (206). The mesa region (206) is a cathode of the Schottky diode (212). The current path through the mesa region (206) has a lateral and a vertical current path. The diode (200) further comprises a MOS structure (214), p-type regions (220), MOS structures (230), and p-type regions (232). MOS structure (214) with the p-type regions (220) pinch-off the lateral current path under reverse bias conditions. P-type regions (220), MOS structures (230), and p-type regions (232) each pinch-off the vertical current path under reverse bias conditions. MOS structure (214) and MOS structures (230) reduce resistance of the lateral and vertical current path under forward bias conditions. The mesa region (206) can have a uniform or non-uniform doping concentration.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: August 6, 2013
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Gordon M. Grivna, Jefferson W. Hall, Mohammed Tanvir Quddus
  • Patent number: 8349625
    Abstract: In one embodiment, a method of sensing a high voltage element includes forming a sense element overlying a semiconductor substrate and configuring the sense element to receive a high voltage having a value that is greater than approximately five volts and responsively form a sense signal having a value that is representative of the value of the high voltage and varies in a continuous manner over an operating range of the high voltage. In one embodiment, the sense signal may be used for one of detecting a line under-voltage condition, detecting a line over-voltage condition, determining input power, limiting input power, power limiting, controlling standby operation, a line feed-forward function for current mode ramp compensation, regulating an output voltage, or detecting an energy transfer state of an energy storage element.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: January 8, 2013
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Jefferson W. Hall, Mohammed Tanvir Quddus
  • Publication number: 20120292732
    Abstract: A diode (200) is disclosed having improved efficiency, smaller form factor, and reduced reverse biased leakage current. Schottky diodes (212) are formed on the sidewalls (210) of a mesa region (206). The mesa region (206) is a cathode of the Schottky diode (212). The current path through the mesa region (206) has a lateral and a vertical current path. The diode (200) further comprises a MOS structure (214), p-type regions (220), MOS structures (230), and p-type regions (232). MOS structure (214) with the p-type regions (220) pinch-off the lateral current path under reverse bias conditions. P-type regions (220), MOS structures (230), and p-type regions (232) each pinch-off the vertical current path under reverse bias conditions. MOS structure (214) and MOS structures (230) reduce resistance of the lateral and vertical current path under forward bias conditions. The mesa region (206) can have a uniform or non-uniform doping concentration.
    Type: Application
    Filed: May 17, 2011
    Publication date: November 22, 2012
    Inventors: Gordon M. Grivna, Jefferson W. Hall, Mohammed Tanvir Quddus
  • Publication number: 20120208353
    Abstract: A semiconductor component having a low resistance conduction path and a method for manufacturing the semiconductor component. When the semiconductor component is a Schottky diode, one or more trenches are formed in an epitaxial layer of a first conductivity type that is formed over a semiconductor substrate of the first conductivity type. The trenches may extend into the semiconductor material. Epitaxial semiconductor material of a second conductivity type is selectively grown along the sidewalls of the trenches. An anode contact is formed in contact with the epitaxial layer and the selectively grown epitaxial material and a cathode contact is formed in contact with the semiconductor substrate.
    Type: Application
    Filed: April 23, 2012
    Publication date: August 16, 2012
    Inventor: Mohammed Tanvir Quddus
  • Patent number: 8168466
    Abstract: In one embodiment, a Schottky diode is formed on a semiconductor substrate with other semiconductor devices and is also formed with a high breakdown voltage and a low forward resistance.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: May 1, 2012
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Mohammed Tanvir Quddus, Shanghui L. Tu, Antonin Rozsypal, Zia Hossain
  • Patent number: 8106436
    Abstract: In one embodiment, a semiconductor device is formed having a trench structure. The trench structure includes a single crystalline semiconductor plug formed along exposed upper surfaces of the trench. In one embodiment, the single crystalline semiconductor plug seals the trench to form a sealed core.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: January 31, 2012
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Gordon M. Grivna, Gary H. Loechelt, John Michael Parsey, Jr., Mohammed Tanvir Quddus
  • Publication number: 20110233635
    Abstract: In one embodiment, a semiconductor device is formed having a trench structure. The trench structure includes a single crystalline semiconductor plug formed along exposed upper surfaces of the trench. In one embodiment, the single crystalline semiconductor plug seals the trench to form a sealed core.
    Type: Application
    Filed: January 13, 2011
    Publication date: September 29, 2011
    Inventors: Gordon M. Grivna, Gary H. Loechelt, John Michael Parsey, JR., Mohammed Tanvir Quddus
  • Patent number: 7955943
    Abstract: In one embodiment, a high voltage element is formed overlying a doped semiconductor region that can be depleted during the operation of the high voltage element includes a conductor overlying a space in a resistor.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: June 7, 2011
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Jefferson W. Hall, Mohammed Tanvir Quddus, Richard S. Burton, Kazunori Oikawa, George Chang
  • Patent number: 7902075
    Abstract: In one embodiment, a semiconductor device is formed having a trench structure. The trench structure includes a single crystalline semiconductor plug formed along exposed upper surfaces of the trench. In one embodiment, the single crystalline semiconductor plug seals the trench to form a sealed core.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: March 8, 2011
    Assignee: Semiconductor Components Industries, L.L.C.
    Inventors: Gordon M. Grivna, Gary H. Loechelt, John Michael Parsey, Jr., Mohammed Tanvir Quddus
  • Publication number: 20100304511
    Abstract: In one embodiment, a high voltage element is formed overlying a doped semiconductor region that can be depleted during the operation of the high voltage element includes a conductor overlying a space in a resistor.
    Type: Application
    Filed: August 10, 2010
    Publication date: December 2, 2010
    Inventors: Jefferson W. Hall, Mohammed Tanvir Quddus
  • Patent number: 7803643
    Abstract: In one embodiment, a method of forming a high voltage element includes forming a sense element overlying at least a portion of a semiconductor substrate, and also includes operably coupling a first circuit to use a sense signal formed by the sense element for one of detecting a line under-voltage condition, detecting a line over-voltage condition, determining input power, limiting input power, power limiting, controlling standby operation, a line feed-forward function for current mode ramp compensation, regulating an output voltage, or detecting an energy transfer state of an energy storage element.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: September 28, 2010
    Assignee: Semiconductor Component Industries, LLC
    Inventors: Jefferson W. Hall, Mohammed Tanvir Quddus
  • Publication number: 20100124793
    Abstract: In one embodiment, a high voltage element is formed overlying a doped semiconductor region that can be depleted during the operation of the high voltage element includes a conductor overlying a space in a resistor.
    Type: Application
    Filed: January 22, 2010
    Publication date: May 20, 2010
    Inventors: Jefferson W. Hall, Mohammed Tanvir Quddus
  • Publication number: 20100059815
    Abstract: In one embodiment, a semiconductor device is formed having a trench structure. The trench structure includes a single crystalline semiconductor plug formed along exposed upper surfaces of the trench. In one embodiment, the single crystalline semiconductor plug seals the trench to form a sealed core.
    Type: Application
    Filed: September 8, 2008
    Publication date: March 11, 2010
    Inventors: Gordon M. Grivna, Gary H. Loechelt, John Michael Parsey, JR., Mohammed Tanvir Quddus
  • Publication number: 20100059849
    Abstract: A semiconductor component having a low resistance conduction path and a method for manufacturing the semiconductor component. When the semiconductor component is a Schottky diode, one or more trenches are formed in an epitaxial layer of a first conductivity type that is formed over a semiconductor substrate of the first conductivity type. The trenches may extend into the semiconductor material. Epitaxial semiconductor material of a second conductivity type is selectively grown along the sidewalls of the trenches. An anode contact is formed in contact with the epitaxial layer and the selectively grown epitaxial material and a cathode contact is formed in contact with the semiconductor substrate.
    Type: Application
    Filed: September 8, 2008
    Publication date: March 11, 2010
    Inventor: Mohammed Tanvir Quddus
  • Publication number: 20100022064
    Abstract: In one embodiment, a high voltage element is formed overlying a doped semiconductor region that can be depleted during the operation of the high voltage element includes a conductor overlying a space in a resistor.
    Type: Application
    Filed: September 30, 2009
    Publication date: January 28, 2010
    Inventors: Jefferson W. Hall, Mohammed Tanvir Quddus, Richard S. Burton, Kazunori Oikawa, George Chang
  • Patent number: 7638405
    Abstract: In one embodiment, a high voltage element is formed overlying a doped semiconductor region that can be depleted during the operation of the high voltage element.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: December 29, 2009
    Assignee: Semiconductor Components Industries, LLC
    Inventors: Jefferson W. Hall, Mohammed Tanvir Quddus
  • Publication number: 20080299751
    Abstract: In one embodiment, a Schottky diode is formed on a semiconductor substrate with other semiconductor devices and is also formed with a high breakdown voltage and a low forward resistance.
    Type: Application
    Filed: June 1, 2007
    Publication date: December 4, 2008
    Inventors: Mohammed Tanvir Quddus, Shanghui L. Tu, Antonin Rozsypal