Patents by Inventor David R. Malecki

David R. Malecki 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).

  • Flyback converter providing simplified control of rectifier MOSFETS when utilizing both stacked secondary windings and synchronous rectification
    Patent number: 7679937
    Abstract: The present invention provides methods and systems for a flyback converter arranged with synchronous rectifier MOSFETS in such a manner that they operate with a common source potential while still providing for the use of a stacked output winding. With a common source potential, a single rectifier control voltage can be used to operate the rectifiers for multiple outputs greatly simplifying the control circuit. Advantageously, the present invention maintains the inherent simplicity of the flyback design while enabling designs with well-regulated multiple voltage outputs and the efficiency benefits of synchronous rectification.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: March 16, 2010
    Assignee: Ciena Corporation
    Inventors: Michael J. Wingrove, David R. Malecki
  • Flyback converter providing simplified control of rectifier MOSFETS when utilizing both stacked secondary windings and synchronous rectification
    Publication number: 20080253150
    Abstract: The present invention provides methods and systems for a flyback converter arranged with synchronous rectifier MOSFETS in such a manner that they operate with a common source potential while still providing for the use of a stacked output winding. With a common source potential, a single rectifier control voltage can be used to operate the rectifiers for multiple outputs greatly simplifying the control circuit. Advantageously, the present invention maintains the inherent simplicity of the flyback design while enabling designs with well-regulated multiple voltage outputs and the efficiency benefits of synchronous rectification.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 16, 2008
    Inventors: Michael J. Wingrove, David R. Malecki