Patents by Inventor Adnaan Mustafa Lokhandwala

Adnaan Mustafa Lokhandwala 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).

  • Secondary side synchronous rectifier for resonant converter
    Patent number: 8134851
    Abstract: A resonant converter including a primary side switching stage having high- and low-side switches series connected at a switching node and controlled by a primary side controller; a transformer having a primary coil and a secondary coil, the secondary coil having at least one pair of portions series connected at a node, a resonant tank formed by series connecting the primary coil to the switching node with a first inductor and a first capacitor; at least one pair of first and second secondary side switches connected to the at least one pair of portions, respectively, the first and second secondary side switches of each pair being used for synchronous rectification; and a secondary side controller to control and drive the first and second secondary side switches of each pair by sensing voltage across each secondary side switch and determining a turn ON and turn OFF transition for the first and second secondary side switches in close proximity to a point in time when there is zero current through the secondary s
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: March 13, 2012
    Assignee: International Rectifier Corporation
    Inventors: Marco Soldano, Adnaan Mustafa Lokhandwala
  • SECONDARY SIDE SYNCHRONOUS RECTIFIER FOR RESONANT CONVERTER
    Publication number: 20090016083
    Abstract: A resonant converter including a primary side switching stage having high- and low-side switches series connected at a switching node and controlled by a primary side controller; a transformer having a primary coil and a secondary coil, the secondary coil having at least one pair of portions series connected at a node, a resonant tank formed by series connecting the primary coil to the switching node with a first inductor and a first capacitor; at least one pair of first and second secondary side switches connected to the at least one pair of portions, respectively, the first and second secondary side switches of each pair being used for synchronous rectification; and a secondary side controller to control and drive the first and second secondary side switches of each pair by sensing voltage across each secondary side switch and determining a turn ON and turn OFF transition for the first and second secondary side switches in close proximity to a point in time when there is zero current through the secondary s
    Type: Application
    Filed: June 6, 2008
    Publication date: January 15, 2009
    Inventors: Marco Soldano, Adnaan Mustafa Lokhandwala