Patents by Inventor Ouyang Qian

Ouyang Qian 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).

  • Control circuit of a DC/DC converter and the method thereof
    Patent number: 8912776
    Abstract: A control circuit of a DC/DC converter, wherein the DC/DC converter further comprises a high-side switch and a low-side switch, and wherein the DC/DC converter provides an output signal to a load. The control circuit comprises: an amplifier configured to receive a feedback signal and a reference signal to provide an error signal; a ramp generator configured to provide a ramp signal; a comparator configured to receive the ramp signal and the error signal to provide a comparison signal; and a COT generator configured to receive the comparison signal, to provide a COT signal to control the high-side switch and the low-side switch.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: December 16, 2014
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Ouyang Qian, Wei Yuan
  • CONTROL CIRCUIT OF A DC/DC CONVERTER AND THE METHOD THEREOF
    Publication number: 20130038302
    Abstract: A control circuit of a DC/DC converter, wherein the DC/DC converter further comprises a high-side switch and a low-side switch, and wherein the DC/DC converter provides an output signal to a load. The control circuit comprises: an amplifier configured to receive a feedback signal and a reference signal to provide an error signal; a ramp generator configured to provide a ramp signal; a comparator configured to receive the ramp signal and the error signal to provide a comparison signal; and a COT generator configured to receive the comparison signal, to provide a COT signal to control the high-side switch and the low-side switch.
    Type: Application
    Filed: August 13, 2012
    Publication date: February 14, 2013
    Applicant: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Ouyang Qian, Wei Yuan