Patents by Inventor Surya Veeraraghavan

Surya Veeraraghavan 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: 9438242
    Abstract: A method of making a first timing path includes developing a first design of the first timing path with a first logic circuit and a first functional cell, wherein the first functional cell comprises a first transistor that is spaced from a first well boundary. The timing path is analyzed to determine if the first timing path has positive timing slack. If the analyzed speed of operation shows positive timing slack, the design is changed to a modified design to reduce power consumption of the first timing path by moving the first transistor closer to the first well boundary. Also the first timing path is then built using the modified design to reduce power consumption of the first timing path by reducing leakage power consumption of the first transistor.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: September 6, 2016
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Anis M. Jarrar, Mark D. Hall, David R. Tipple, Surya Veeraraghavan
  • Publication number: 20150015306
    Abstract: A method of making a first timing path includes developing a first design of the first timing path with a first logic circuit and a first functional cell, wherein the first functional cell comprises a first transistor that is spaced from a first well boundary. The timing path is analyzed to determine if the first timing path has positive timing slack. If the analyzed speed of operation shows positive timing slack, the design is changed to a modified design to reduce power consumption of the first timing path by moving the first transistor closer to the first well boundary. Also the first timing path is then built using the modified design to reduce power consumption of the first timing path by reducing leakage power consumption of the first transistor.
    Type: Application
    Filed: July 12, 2013
    Publication date: January 15, 2015
    Inventors: Anis M. Jarrar, Mark D. Hall, David R. Tipple, Surya Veeraraghavan
  • Patent number: 8656331
    Abstract: An approach is provided in which a system executes transistor-level circuit simulation of a standard cell that includes parameters corresponding to a semiconductor manufacturing technology process. Sensitivity data is collected that quantifies changes to performance metrics corresponding to the standard cell in response to adjusting one or more of the parameters during the transistor-level circuit simulation. In turn, the system generates derate factors based upon the sensitivity data and tests an integrated circuit design according to the derate factors. Testing the integrated circuit design includes performing static timing analysis on the integrated circuit design that simulates operation of a device built from the integrated circuit design using the semiconductor technology process. In one embodiment, when the static timing analysis indicates timing violations, the system dynamically generates custom derate factors for particular cell instances corresponding to the timing violations.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: February 18, 2014
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Savithri Sundareswaran, Surya Veeraraghavan
  • Patent number: 7446001
    Abstract: A method for making a semiconductor device includes patterning a semiconductor layer, overlying an insulator layer, to create a first active region and a second active region, wherein the first active region is of a different height from the second active region, and wherein at least a portion of the first active region has a first conductivity type and at least a portion of the second active region has a second conductivity type different from the first conductivity type in at least a channel region of the semiconductor device. The method further includes forming a gate structure over at least a portion of the first active region and the second active region. The method further includes removing a portion of the second active region on one side of the semiconductor device.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: November 4, 2008
    Assignee: Freescale Semiconductors, Inc.
    Inventors: Leo Mathew, Lixin Ge, Surya Veeraraghavan
  • Publication number: 20070181946
    Abstract: A method for making a semiconductor device includes patterning a semiconductor layer, overlying an insulator layer, to create a first active region and a second active region, wherein the first active region is of a different height from the second active region, and wherein at least a portion of the first active region has a first conductivity type and at least a portion of the second active region has a second conductivity type different from the first conductivity type in at least a channel region of the semiconductor device. The method further includes forming a gate structure over at least a portion of the first active region and the second active region. The method further includes removing a portion of the second active region on one side of the semiconductor device.
    Type: Application
    Filed: February 8, 2006
    Publication date: August 9, 2007
    Inventors: Leo Mathew, Lixin Ge, Surya Veeraraghavan
  • Patent number: 6953738
    Abstract: A method for forming a silicon-on-insulator transistor (80) includes forming an active region (82) overlying an insulating layer (122), wherein a portion of the active region provides an intrinsic body region (126). A body tie access region (128) is also formed within the active region, overlying the insulating layer and laterally disposed adjacent the intrinsic body region, making electrical contact to the intrinsic body region. A gate electrode (134) is formed overlying the intrinsic body region for providing electrical control of the intrinsic body region, the gate electrode extending over a portion (137) of the body tie access region. The gate electrode is formed having a substantially constant gate length (88) along its entire width overlying the intrinsic body region and the body tie access region to minimize parasitic capacitance and gate electrode leakage. First and second current electrodes (98,100) are formed adjacent opposite sides of the intrinsic body region.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: October 11, 2005
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Surya Veeraraghavan, Yang Du, Glenn O. Workman
  • Publication number: 20050127442
    Abstract: A method for forming a silicon-on-insulator transistor (80) includes forming an active region (82) overlying an insulating layer (122), wherein a portion of the active region provides an intrinsic body region (126). A body tie access region (128) is also formed within the active region, overlying the insulating layer and laterally disposed adjacent the intrinsic body region, making electrical contact to the intrinsic body region. A gate electrode (134) is formed overlying the intrinsic body region for providing electrical control of the intrinsic body region, the gate electrode extending over a portion (137) of the body tie access region. The gate electrode is formed having a substantially constant gate length (88) along its entire width overlying the intrinsic body region and the body tie access region to minimize parasitic capacitance and gate electrode leakage. First and second current electrodes (98,100) are formed adjacent opposite sides of the intrinsic body region.
    Type: Application
    Filed: December 12, 2003
    Publication date: June 16, 2005
    Inventors: Surya Veeraraghavan, Yang Du, Glenn Workman