Patents by Inventor Angel Gentchev

Angel Gentchev 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: 9147515
    Abstract: An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: September 29, 2015
    Assignee: Volterra Semiconductor LLC
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev
  • Patent number: 8836461
    Abstract: An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg.
    Type: Grant
    Filed: March 10, 2013
    Date of Patent: September 16, 2014
    Assignee: Volterra Semiconductor Corporation
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev
  • Publication number: 20140247104
    Abstract: An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg.
    Type: Application
    Filed: May 13, 2014
    Publication date: September 4, 2014
    Applicant: Volterra Semiconductor Corporation
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev
  • Patent number: 8786395
    Abstract: An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg.
    Type: Grant
    Filed: March 10, 2013
    Date of Patent: July 22, 2014
    Assignee: Volterra Semiconductor Corporation
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev
  • Patent number: 8779885
    Abstract: An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg.
    Type: Grant
    Filed: March 10, 2013
    Date of Patent: July 15, 2014
    Assignee: Volterra Semiconductor Corporation
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev
  • Publication number: 20130229249
    Abstract: An M phase coupled inductor includes a magnetic core including a first end magnetic element, a second end magnetic element, and M legs disposed between and connecting the first and second end magnetic elements. M is an integer greater than one. The coupled inductor further includes M windings, where each winding has a substantially rectangular cross section. Each one of the M windings is at least partially wound about a respective leg.
    Type: Application
    Filed: March 10, 2013
    Publication date: September 5, 2013
    Applicant: VOLTERRA SEMICONDUCTOR CORPORATION
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev
  • Publication number: 20120319478
    Abstract: Ripple cancellation techniques are described for various DC to DC converters having multiple parallel phases with magnetically coupled inductors.
    Type: Application
    Filed: June 20, 2011
    Publication date: December 20, 2012
    Applicant: VOLTERRA SEMICONDUCTOR CORPORATION
    Inventors: Angel Gentchev, Anthony Stratakos, Alexander Ikriannikov
  • Patent number: 7864016
    Abstract: Methods and structures for constructing a magnetic core of a coupled inductor. The method provides for constructing N-phase coupled inductors as both single and scalable magnetic structures, where N is an integer greater than 1. The method additionally describes how such a construction of the magnetic core may enhance the benefits of using the scalable N-phase coupled inductor. The first and second magnetic cores may be formed into shapes that, when coupled together, may form a single scalable magnetic core. For example, the cores can be fashioned into shapes such as a U, an I, an H, a ring, a rectangle, and a comb, that cooperatively form the single magnetic core.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: January 4, 2011
    Assignee: Volterra Semiconductor Corporation
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev Gentchev
  • Patent number: 7772955
    Abstract: Methods and structures for constructing a magnetic core of a coupled inductor. The method provides for constructing N-phase coupled inductors as both single and scalable magnetic structures, where N is an integer greater than 1. The method additionally describes how such a construction of the magnetic core may enhance the benefits of using the scalable N-phase coupled inductor. The first and second magnetic cores may be formed into shapes that, when coupled together, may form a single scalable magnetic core. For example, the cores can be fashioned into shapes such as a U, an I, an H, a ring, a rectangle, and a comb, that cooperatively form the single magnetic core.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: August 10, 2010
    Assignee: Volterra Semiconductor Corporation
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev
  • Patent number: 7746209
    Abstract: Methods and structures for constructing a magnetic core of a coupled inductor. The method provides for constructing N-phase coupled inductors as both single and scalable magnetic structures, where N is an integer greater than 1. The method additionally describes how such a construction of the magnetic core may enhance the benefits of using the scalable N-phase coupled inductor. The first and second magnetic cores may be formed into shapes that, when coupled together, may form a single scalable magnetic core. For example, the cores can be fashioned into shapes such as a U, an I, an H, a ring, a rectangle, and a comb, that cooperatively form the single magnetic core.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: June 29, 2010
    Assignee: Volterra Semiconductor Corporation
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev
  • Patent number: 7525408
    Abstract: Methods and structures for constructing a magnetic core of a coupled inductor. The method provides for constructing N-phase coupled inductors as both single and scalable magnetic structures, where N is an integer greater than 1. The method additionally describes how such a construction of the magnetic core may enhance the benefits of using the scalable N-phase coupled inductor. The first and second magnetic cores may be formed into shapes that, when coupled together, may form a single scalable magnetic core. For example, the cores can be fashioned into shapes such as a U, an I, an H, a ring, a rectangle, and a comb, that cooperatively form the single magnetic core.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: April 28, 2009
    Assignee: Volterra Semiconductor Corporation
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev
  • Patent number: 7352269
    Abstract: Methods and structures for constructing a magnetic core of a coupled inductor. The method provides for constructing N-phase coupled inductors as both single and scalable magnetic structures, where N is an integer greater than 1. The method additionally describes how such a construction of the magnetic core may enhance the benefits of using the scalable N-phase coupled inductor. The first and second magnetic cores may be formed into shapes that, when coupled together, may form a single scalable magnetic core. For example, the cores can be fashioned into shapes such as a U, an I, an H, a ring, a rectangle, and a comb, that cooperatively form the single magnetic core.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: April 1, 2008
    Assignee: Volterra Semiconductor Corporation
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev
  • Publication number: 20040113741
    Abstract: Methods and structures for constructing a magnetic core of a coupled inductor. The method provides for constructing N-phase coupled inductors as both single and scalable magnetic structures, where N is an integer greater than 1. The method additionally describes how such a construction of the magnetic core may enhance the benefits of using the scalable N-phase coupled inductor. The first and second magnetic cores may be formed into shapes that, when coupled together, may form a single scalable magnetic core. For example, the cores can be fashioned into shapes such as a U, an I, an H, a ring, a rectangle, and a comb, that cooperatively form the single magnetic core.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 17, 2004
    Inventors: Jieli Li, Charles R. Sullivan, Angel Gentchev Gentchev