Patents by Inventor Prasun Raha

Prasun Raha 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: 11950358
    Abstract: A semiconductor device system comprises an integrated circuit (IC) die. The IC die is configured to operate in a first operating mode during a first period, and a second operating mode during a second period. The first period is associated with enabling an element of the IC die and a first amount of voltage droop. The second period occurs after the first period and is associated with a second amount of voltage droop. The second amount of voltage droop is less than the first amount of voltage droop.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: April 2, 2024
    Assignee: XILINX, INC.
    Inventors: Frank Peter Lambrecht, Brian D. Philofsky, Hong Shi, Prasun Raha
  • Patent number: 7026838
    Abstract: The present invention provides a system (200) for performing accelerated stress characterization of a given transistor (204). Inverter circuits, formed from the given transistor, are disposed in series with one another (202). A plurality of signal taps is operatively associated with each gap between adjacent inverter circuits. Selective circuitry is operatively coupled to the plurality of signal taps, and adapted to output (206) data from a first and a second of the plurality of signal taps. A controlled voltage component (212) is operatively coupled the plurality of inverter circuits, and adapted to supply a desired supply voltage. A controlled signal component (210) is operatively coupled the plurality of inverter circuits, and adapted to supply a signal of a desired frequency thereto. An evaluation component (208) receives signal data from the first and second signal taps for evaluation or processing.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: April 11, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Vijay Kumar Reddy, Prasun Raha
  • Publication number: 20050280477
    Abstract: The present invention provides a system (200) for performing accelerated stress characterization of a given transistor (204). Inverter circuits, formed from the given transistor, are disposed in series with one another (202). A plurality of signal taps is operatively associated with each gap between adjacent inverter circuits. Selective circuitry is operatively coupled to the plurality of signal taps, and adapted to output (206) data from a first and a second of the plurality of signal taps. A controlled voltage component (212) is operatively coupled the plurality of inverter circuits, and adapted to supply a desired supply voltage. A controlled signal component (210) is operatively coupled the plurality of inverter circuits, and adapted to supply a signal of a desired frequency thereto. An evaluation component (208) receives signal data from the first and second signal taps for evaluation or processing.
    Type: Application
    Filed: June 18, 2004
    Publication date: December 22, 2005
    Inventors: Vijay Reddy, Prasun Raha
  • Publication number: 20050218903
    Abstract: A method and apparatus permit voltage waveforms to be generated based, in part, on a request containing a plurality of waveform parameters. The voltage waveforms preferably represents voltage overshoot or undershoots.
    Type: Application
    Filed: March 31, 2004
    Publication date: October 6, 2005
    Applicant: Taxas Instruments Incorported
    Inventors: Vijay Reddy, Prasun Raha
  • Publication number: 20050140429
    Abstract: An apparatus includes a voltage regulator operable to regulate a supply voltage to an on-chip module having an operational current, draw a supply current, and supply the operation current to the on-chip module. The supply current drawn by the voltage regulator is proportional to the operating current of the on-chip module.
    Type: Application
    Filed: December 29, 2003
    Publication date: June 30, 2005
    Inventors: T. Viswanathan, Prasun Raha
  • Publication number: 20050117680
    Abstract: In one embodiment, a system for frequency and phase correction in a phase-locked loop (PLL) includes a phase frequency detector, first and second charge pumps respectively generating a first current and a voltage, a voltage-to-current (V2I) converter, a current summer, and a current-controlled oscillator (CCO). The phase frequency detector detects a frequency difference and a phase difference between a clock signal and a comparison signal, communicates the frequency difference to a first charge pump generating a first current, and communicates the phase difference to a second charge pump generating a voltage. The comparison signal is derived from an output signal of the PLL. The first charge pump modifies the first current according to the frequency difference and communicates the first current to the current summer. The second charge pump modifies the voltage according to the phase difference and communicates the voltage to the V2I converter.
    Type: Application
    Filed: December 2, 2003
    Publication date: June 2, 2005
    Inventors: Prasun Raha, T. Viswanathan, Richard Jennings
  • Publication number: 20050110579
    Abstract: Generating an oscillating signal according to a control current includes receiving a control current corresponding to an oscillation frequency. A first differential signal and a second differential signal are generated by switching a first load according to the control current to yield the first differential signal, and switching a second load according to the control current to yield the second differential signal. The first load operates in opposition to the second load.
    Type: Application
    Filed: November 25, 2003
    Publication date: May 26, 2005
    Inventor: Prasun Raha
  • Patent number: 6847260
    Abstract: A monolithic low dropout regulator includes an active capacitor multiplier that is used to form the dominant pole of the regulator, thereby yielding stability. This decouples the system stability from the high-frequency power supply rejection ratio (PSRR). The PSRR at high frequencies is tuned independently using a reasonable on-chip capacitor C2.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: January 25, 2005
    Assignee: Texas Instruments Incorporated
    Inventors: Vishal I. Gupta, Prasun Raha, Gabriel A. Rincon-Mora
  • Publication number: 20040212429
    Abstract: A monolithic low dropout regulator includes an active capacitor multiplier that is used to form the dominant pole of the regulator, thereby yielding stability. This decouples the system stability from the high-frequency power supply rejection ratio (PSRR). The PSRR at high frequencies is tuned independently using a reasonable on-chip capacitor C2.
    Type: Application
    Filed: April 23, 2003
    Publication date: October 28, 2004
    Inventors: Vishal I. Gupta, Prasun Raha, Gabriel A. Rincon-Mora