Patents by Inventor Jiangkun Li

Jiangkun Li 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).

  • Power converter with the function of digital error correction
    Patent number: 8947063
    Abstract: An output voltage regulator of step-down switching power converters is described, with the regulator provided with digitally adjusted output voltage. It solves the problem of low regulation due to low error amplifier (EA) gain. This invention includes a power converter with the function of Digitally Error Correction, having Logic Control, EA, PWM comparator, Driver, power devices and passive components. A Digital Calibration Circuit whose input terminal is connected to the output voltage and output terminal is connected to the error signal. When the output voltage exceeds the tolerance range, this Digital Calibration Circuit will increase or decrease the error signal step by step, keeping the output voltage in the tolerance range. The Digital Calibration Circuit can be applied not only in nanometer scale process, but also in traditional process. For those power converters in traditional process, it is also quite promising in applications.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: February 3, 2015
    Assignee: University of Electronic Science and Technology of China
    Inventors: Bo Zhang, Shaowei Zhen, Ping Luo, Xiaohui Zhu, Jiangkun Li
  • POWER CONVERTER WITH THE FUNCTION OF DIGITAL ERROR CORRECTION
    Publication number: 20130335045
    Abstract: This invention relates to the output voltage regulator of step-down switching power converters. This invention provides regulator with digitally adjusted output voltage. It solves the problem of low regulation due to low error amplifier (EA) gain. This invention is a power converter with the function of Digitally Error Correction, consisting of Logic Control, EA, PWM comparator, Driver, power devices and passive components. It features Digital Calibration Circuit whose input terminal is connected to the output voltage and output terminal is connected to the error signal. When the output voltage exceeds the tolerance range, this Digital Calibration Circuit will increase or decrease the error signal step by step, keeping the output voltage in the tolerance range. The Digital Calibration Circuit of this invention can be applied not only in nanometer scale process, but also in traditional process. For those power converters in traditional process, it is also quite promising in applications.
    Type: Application
    Filed: March 17, 2011
    Publication date: December 19, 2013
    Applicant: University of Electronic Science and Technology of China
    Inventors: Bo Zhang, Shaowei Zhen, Ping Luo, Xiaohui Zhu, Jiangkun Li