Patents by Inventor Aldrick Limjoco

Aldrick Limjoco 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).

  • Switching regulator with integrated resonant circuit for ripple filtering
    Patent number: 8885376
    Abstract: A switching regulator IC contains both switching regulator circuitry and an inductor and a capacitor connected in parallel to form a resonant circuit having an associated notch filter frequency response arranged such that, when connected to receive the regulated output voltage, the resonant circuit attenuates the ripple component. This is accomplished by matching the resonant notch to the ripple's fundamental frequency, either manually or automatically. In addition, the resonant circuit's inductor and capacitor can act in concert with decoupling capacitors coupled to the load to form a low pass filter which attenuates harmonics of the ripple's fundamental frequency.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: November 11, 2014
    Assignee: Analog Devices, Inc.
    Inventors: Patrick J. Meehan, Thomas Conway, Aldrick Limjoco, Donal G. O'Sullivan
  • SWITCHING REGULATOR WITH INTEGRATED RESONANT CIRCUIT FOR RIPPLE FILTERING
    Publication number: 20130320943
    Abstract: A switching regulator IC contains both switching regulator circuitry and an inductor and a capacitor connected in parallel to form a resonant circuit having an associated notch filter frequency response arranged such that, when connected to receive the regulated output voltage, the resonant circuit attenuates the ripple component. This is accomplished by matching the resonant notch to the ripple's fundamental frequency, either manually or automatically. In addition, the resonant circuit's inductor and capacitor can act in concert with decoupling capacitors coupled to the load to form a low pass filter which attenuates harmonics of the ripple's fundamental frequency.
    Type: Application
    Filed: May 31, 2012
    Publication date: December 5, 2013
    Inventors: Patrick J. Meehan, Thomas Conway, Aldrick Limjoco, Donal G. O'Sullivan