Patents by Inventor Darcherng Su

Darcherng Su 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).

  • Method and circuit for controlling switching frequency signal
    Patent number: 7116566
    Abstract: A method and a circuit for controlling a switching frequency signal used in a direct current to direct current (DC to DC) converter are proposed. The DC to DC converter generates an output voltage to drive a system. The switching frequency signal is generated by inputting a modulation frequency to a pulse width modulation (PWM) circuit. The method includes steps of: 1. generating a control signal from the system to stop the pulse width modulation (PWM) circuit to generate the switching frequency signal when a signal is received by the system; and 2. restarting the pulse width modulation (PWM) circuit to generate the switching frequency signal in order to increase the output voltage to drive the system when the output voltage from the DC to DC converter is under a predetermined voltage.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: October 3, 2006
    Assignee: Winbond Electronics Corp.
    Inventors: Pei Pei Yang, Darcherng Su, Ko-Chin Wang
  • Method and circuit for controlling switching frequency signal
    Publication number: 20030076880
    Abstract: A method and a circuit for controlling a switching frequency signal used in a direct current to direct current (DC to DC) converter are proposed. The DC to DC converter generates an output voltage to drive a system. The switching frequency signal is generated by inputting a modulation frequency to a pulse width modulation (PWM) circuit. The method includes steps of: 1. generating a control signal from the system to stop the pulse width modulation (PWM) circuit to generate the switching frequency signal when a signal is received by the system; and 2. restarting the pulse width modulation (PWM) circuit to generate the switching frequency signal in order to increase the output voltage to drive the system when the output voltage from the DC to DC converter is under a predetermined voltage.
    Type: Application
    Filed: October 15, 2002
    Publication date: April 24, 2003
    Inventors: Pei Pei Yang, Darcherng Su, Ko-Chin Wang