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. 28, 2016
Filed:
May. 30, 2013
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Rajarshi Paul, Fremont, CA (US);
Parin Patel, San Francisco, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/44 (2007.01); H02M 3/156 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/156 (2013.01); H02M 1/44 (2013.01); H02M 2001/0032 (2013.01); Y02B 70/16 (2013.01);
Abstract
The switching frequency of a switch mode PFM power converter is compared with a predetermined frequency range that contains the operating frequency of a nearby clocked sub-system. In response to the switching frequency coming into the range, a parameter of the power converter is changed from an original value, so as to cause the switching frequency to go out of the range.