Patents by Inventor Zhenfu Fei

Zhenfu Fei 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).

  • Uninterruptible power supply and DC-DC converter
    Patent number: 9564775
    Abstract: An uninterruptable power supply (UPS) and a direct current-direct current (DC-DC) converter. An input end of the DC-DC converter is connected to a BUS+, a BUS?, and an N wire, and a load in the DC-DC converter is connected to a switch tube through an inductor rather than being directly connected to the switch tube.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: February 7, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Peiguo Liu, Zhenfu Fei, Yanan Zhou
  • Uninterruptible Power Supply and DC-DC Converter
    Publication number: 20140111005
    Abstract: The present invention provides a UPS and a DC-DC converter. An input end of the DC-DC converter is connected to a BUS+, a BUS?, and an N wire. Therefore, an input voltage is relatively low, and devices with low voltage resistance may be selected as devices in the DC-DC converter. Moreover, a load in the DC-DC converter is connected to a switch tube through a inductor rather than be directly connected to the switch tube. Therefore, a high-frequency switch wave on the second switch tube may not affect the load. Accordingly, performance of the load and an anti-electromagnetic interference capability of a whole circuit may be improved. In addition, the DC-DC converter provided in present invention does not have a structure as complicated as that of a dual BUCK topology in the prior art. Therefore, the DC-DC converter, with respect to the dual BUCK topology, has less devices and lower costs.
    Type: Application
    Filed: December 30, 2013
    Publication date: April 24, 2014
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Peiguo Liu, Zhenfu Fei, Yanan Zhou