Patents by Inventor Suresh Kariyadan

Suresh Kariyadan 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).

  • Synchronous buck converter including multi-mode control for light load efficiency and related method
    Patent number: 8912773
    Abstract: According to one embodiment, a synchronous buck converter comprises a multi-mode control circuit for detecting a load condition of a variable load, an output stage driven by the multi-mode control circuit, wherein the variable load is coupled to the output stage, and a feedback circuit connected between the output stage and the multi-mode control circuit. The multi-mode control circuit is configured to adjust a current provided by the output stage to the variable load based on the load condition. In one embodiment, the multi-mode control circuit selectably uses one of at least a first control mode and a second control mode according to the load condition, wherein the first control mode is a pulse-width modulation (PWM) mode selected for switching efficiency when the load condition is heavy and the second control mode is an adaptive ON-time (AOT) mode selected for switching efficiency when the load condition is light.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: December 16, 2014
    Assignee: International Rectifier Corporation
    Inventors: Parviz Parto, Seungbeom Kevin Kim, Amir M. Rahimi, Suresh Kariyadan
  • Synchronous Buck Converter Including Multi-Mode Control for Light Load Efficiency and Related Method
    Publication number: 20120187928
    Abstract: According to one embodiment, a synchronous buck converter comprises a multi-mode control circuit for detecting a load condition of a variable load, an output stage driven by the multi-mode control circuit, wherein the variable load is coupled to the output stage, and a feedback circuit connected between the output stage and the multi-mode control circuit. The multi-mode control circuit is configured to adjust a current provided by the output stage to the variable load based on the load condition. In one embodiment, the multi-mode control circuit selectably uses one of at least a first control mode and a second control mode according to the load condition, wherein the first control mode is a pulse-width modulation (PWM) mode selected for switching efficiency when the load condition is heavy and the second control mode is an adaptive ON-time (AOT) mode selected for switching efficiency when the load condition is light.
    Type: Application
    Filed: May 19, 2011
    Publication date: July 26, 2012
    Applicant: INTERNATIONAL RECTIFIER CORPORATION
    Inventors: Parviz Parto, Seungbeom Kevin Kim, Amir M. Rahimi, Suresh Kariyadan