The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2014
Filed:
May. 31, 2012
Patrick J. Meehan, Pallaskenry, IE;
Thomas Conway, Castletroy, IE;
Aldrick Limjoco, Dasmarinas, PH;
Donal G. O'sullivan, Ardnacrusha, IE;
Patrick J. Meehan, Pallaskenry, IE;
Thomas Conway, Castletroy, IE;
Aldrick Limjoco, Dasmarinas, PH;
Donal G. O'Sullivan, Ardnacrusha, IE;
Analog Devices, Inc., Norwood, MA (US);
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.