Patents by Inventor Raju Balasubramanian

Raju Balasubramanian 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).

  • Implementing automated identification of optimal sense point and sector locations in various on-chip linear voltage regulator designs
    Patent number: 10467372
    Abstract: A method and system for implementing automated identification of optimal sense point (SP) and sector locations in various on-chip linear voltage regulator designs. A customized cost function is used along with predefined performance metrics to identify optimal SP and sector locations, under user-defined design constraints. The SP and sector locations are updated based on the identified optimization results, and the updated SP and sector locations are applied to an on-chip linear voltage regulator design to provide enhanced regulator performance and to ensure proper operation.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: November 5, 2019
    Assignee: International Business Machines Corporation
    Inventors: Anurag P. Umbarkar, Erich C. Schanzenbach, Howard H. Smith, Raju Balasubramanian
  • IMPLEMENTING AUTOMATED IDENTIFICATION OF OPTIMAL SENSE POINT AND SECTOR LOCATIONS IN VARIOUS ON-CHIP LINEAR VOLTAGE REGULATOR DESIGNS
    Publication number: 20190034573
    Abstract: A method and system for implementing automated identification of optimal sense point (SP) and sector locations in various on-chip linear voltage regulator designs. A customized cost function is used along with predefined performance metrics to identify optimal SP and sector locations, under user-defined design constraints. The SP and sector locations are updated based on the identified optimization results, and the updated SP and sector locations are applied to an on-chip linear voltage regulator design to provide enhanced regulator performance and to ensure proper operation.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 31, 2019
    Inventors: Anurag P. Umbarkar, Erich C. Schanzenbach, Howard H. Smith, Raju Balasubramanian
  • Evaluating on-chip voltage regulation
    Patent number: 9607118
    Abstract: A linear circuit simulator can be supplied with a linear power distribution model of an integrated circuit (IC) and two sets of voltage regulator equivalent resistances. The linear circuit simulator can then be used to calculate two voltages, at a sense point of the IC, corresponding to the two sets of voltage regulator equivalent resistances. The two sets of voltage regulator equivalent resistances and the two voltages at the IC sense point can be used to interpolate a slope of a resistance versus voltage curve of the linear power distribution model. The slope can be used to calculate an updated set of voltage regulator equivalent resistances, which can be used by the linear circuit simulator to calculate a set of performance metrics and an updated voltage at the sense point of the IC.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: March 28, 2017
    Assignee: International Business Machines Corporation
    Inventors: Raju Balasubramanian, Erich C. Schanzenbach, Howard H. Smith, Anurag P. Umbarkar
  • Evaluating on-chip voltage regulation
    Patent number: 9582622
    Abstract: A linear circuit simulator can be supplied with a linear power distribution model of an integrated circuit (IC) and two sets of voltage regulator equivalent resistances. The linear circuit simulator can then be used to calculate two voltages, at a sense point of the IC, corresponding to the two sets of voltage regulator equivalent resistances. The two sets of voltage regulator equivalent resistances and the two voltages at the IC sense point can be used to interpolate a slope of a resistance versus voltage curve of the linear power distribution model. The slope can be used to calculate an updated set of voltage regulator equivalent resistances, which can be used by the linear circuit simulator to calculate a set of performance metrics and an updated voltage at the sense point of the IC.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: February 28, 2017
    Assignee: International Business Machines Corporation
    Inventors: Raju Balasubramanian, Erich C. Schanzenbach, Howard H. Smith, Anurag P. Umbarkar