Patents by Inventor Po-Shun Chung

Po-Shun Chung 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).

  • Pulse width modulation regulator system with automatically switching pulse skipping mode
    Patent number: 7751471
    Abstract: A pulse width modulation (PWM) Regulator System with automatically switching pulse skipping mode (PSM) is disclosed. The PWM regulator system comprises a PWM regulator, a PSM switching module and a pulse generator. The PWM regulator converts the input voltage by PWM. The PSM switching module determines to enter or exit the PSM. The pulse generator adaptively produces pulse signal for the switching regulator to operate in PSM.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: July 6, 2010
    Assignee: Richtek Technology Corp.
    Inventors: Kwan-Jen Chu, Chung-Lung Pai, Po-Shun Chung, Jing-Meng Liu
  • Pulse width modulation regulator system with automatically switching pulse skipping mode
    Patent number: 7746926
    Abstract: A pulse width modulation (PWM) Regulator System with automatically switching pulse skipping mode (PSM) is disclosed. The PWM regulator system comprises a PWM regulator, a PSM switching module and a pulse generator. The PWM regulator converts the input voltage by PWM. The PSM switching module determines to enter or exit the PSM. The pulse generator adaptively produces pulse signal for the switching regulator to operate in PSM.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: June 29, 2010
    Assignee: Richtek Technology Corp.
    Inventors: Kwan-Jen Chu, Chung-Lung Pai, Po-Shun Chung, Jing-Meng Liu
  • PULSE WIDTH MODULATION REGULATOR SYSTEM WITH AUTOMATICALLY SWITCHING PULSE SKIPPING MODE
    Publication number: 20090115389
    Abstract: A pulse width modulation (PWM) Regulator System with automatically switching pulse skipping mode (PSM) is disclosed. The PWM regulator system comprises a PWM regulator, a PSM switching module and a pulse generator. The PWM regulator converts the input voltage by PWM. The PSM switching module determines to enter or exit the PSM. The pulse generator adaptively produces pulse signal for the switching regulator to operate in PSM.
    Type: Application
    Filed: January 6, 2009
    Publication date: May 7, 2009
    Inventors: Kwan-Jen Chu, Chung-Lung Pai, Po-Shun Chung, Jing-Meng Liu
  • Direct current voltage boosting/bucking device
    Patent number: 7148666
    Abstract: A direct current voltage boosting/bucking device includes a direct current voltage boosting circuit and a low drop-out (LDO) linear voltage converting circuit. The direct current voltage boosting circuit boosts an input voltage so as to generate an output voltage higher than the input voltage. The LDO linear voltage converting circuit converts the output voltage into a load voltage that is to be provided to a load, and controls the direct current voltage boosting circuit in accordance with a feedback signal from the load such that the output voltage and the load voltage have a minimum drop-out voltage differential therebetween and such that current flow through the load is maintained at a determined level.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: December 12, 2006
    Assignee: Richtek Technology Corp.
    Inventors: Liang-Pin Tai, Chun-Tsung Chen, Chin-Chiang Yeh, Po-Shun Chung, Kwan-Jen Chu, Chung-Lung Pai
  • Pulse width modulation regulator system with automatically switching pulse skipping mode
    Publication number: 20060268974
    Abstract: A pulse width modulation (PWM) Regulator System with automatically switching pulse skipping mode (PSM) is disclosed. The PWM regulator system comprises a PWM regulator, a PSM switching module and a pulse generator. The PWM regulator converts the input voltage by PWM. The PSM switching module determines to enter or exit the PSM. The pulse generator adaptively produces pulse signal for the switching regulator to operate in PSM.
    Type: Application
    Filed: November 15, 2005
    Publication date: November 30, 2006
    Inventors: Kwan-Jen Chu, Chung-Lung Pai, Po-Shun Chung, Jing-Meng Liu
  • DIRECT CURRENT VOLTAGE BOOSTING/BUCKING DEVICE
    Publication number: 20060261790
    Abstract: A direct current voltage boosting/bucking device includes a direct current voltage boosting circuit and a low drop-out (LDO) linear voltage converting circuit. The direct current voltage boosting circuit boosts an input voltage so as to generate an output voltage higher than the input voltage. The LDO linear voltage converting circuit converts the output voltage into a load voltage that is to be provided to a load, and controls the direct current voltage boosting circuit in accordance with a feedback signal from the load such that the output voltage and the load voltage have a minimum drop-out voltage differential therebetween and such that current flow through the load is maintained at a determined level.
    Type: Application
    Filed: July 18, 2005
    Publication date: November 23, 2006
    Inventors: Liang-Pin Tai, Chun-Tsung Chen, Chin-Chiang Yeh, Po-Shun Chung, Kwan-Jen Chu, Chung-Lung Pai