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:
Jun. 11, 2019
Filed:
Nov. 06, 2017
Applicant:
Analog Devices Global Unlimited Company, Hamilton, BM;
Inventors:
Aldrick S. Limjoco, Dasmarinas Cavite, PH;
Jefferson Albo Eco, Gen. Trias Cavite, PH;
Assignee:
Analog Devices Global Unlimited Company, Hamilton, BM;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 1/14 (2006.01); H02M 3/155 (2006.01); H03H 7/01 (2006.01); H02M 1/15 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/143 (2013.01); H02M 3/155 (2013.01); H03H 7/0115 (2013.01); H02M 1/15 (2013.01); H02M 2001/0064 (2013.01); H03H 2210/025 (2013.01);
Abstract
An LC filter circuit reduces an output voltage ripple of a switching power supply using coupled inductors in combination with a capacitor to form a notch filter, and aligning the notch region of the notch filter with a ripple frequency of the switching power supply to attenuate the frequency region of the fundamental ripple frequency by a larger amount than other frequencies.