Patents by Inventor Jian Ping Fan

Jian Ping Fan 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: 6859373
    Abstract: A switching-mode power converter includes input and output circuits. A transformer having primary and secondary windings which are respectively coupled to the input and output circuits. The secondary winding has two end terminals respectively connected to first and second switches. The first and second switches are also joined together at a common node. The secondary winding also has a mid terminal. A filter circuit is disposed between the mid terminal and the common node. The first and second switches are controlled by complementary control circuits which selectively allow current to orderly pass through the filter circuit via the switches during the forward rectification, resetting, and freewheeling modes of operation of the power converter.
    Type: Grant
    Filed: July 6, 2004
    Date of Patent: February 22, 2005
    Assignee: Broadband Telcom Power, Inc.
    Inventors: Xiao Ping Jin, Jian Ping Fan
  • Patent number: 6788553
    Abstract: A switching-mode power converter includes input and output circuits. A transformer having primary and secondary windings which are respectively coupled to the input and output circuits. The secondary winding has two end terminals respectively connected to first and second switches. The first and second switches are also joined together at a common node. The secondary winding also has a mid terminal. A filter circuit is disposed between the mid terminal and the common node. The first and second switches are controlled by complementary control circuits which selectively allow current to orderly pass through the filter circuit via the switches during the forward rectification, resetting, and freewheeling modes of operation of the power converter.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: September 7, 2004
    Assignee: Broadband Telcom Power, Inc.
    Inventors: Xiao Ping Jin, Jian Ping Fan
  • Patent number: 6765808
    Abstract: A power converter includes a transformer disposed between an input circuit and an output circuit. The transformer has primary and secondary windings coupled to the input and output circuit, respectively. Current passing through the input circuit is sensed and fed to a RC (Resistance-Capacitance) circuit which generates a signal proportional in magnitude to the output current sourcing out of the output circuit.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: July 20, 2004
    Assignee: Broadband Telcom Power, Inc.
    Inventors: Xiao Ping Jin, Jian Ping Fan