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:
Oct. 02, 2012
Filed:
Apr. 06, 2010
Andrew Joseph Gardner, Louisville, CO (US);
Gregory Jon Manlove, Colorado Springs, CO (US);
Robert C. Chiacchia, Colorado Springs, CO (US);
Hellmuth Stephen Witte, Colorado Springs, CO (US);
Andrew Joseph Gardner, Louisville, CO (US);
Gregory Jon Manlove, Colorado Springs, CO (US);
Robert C. Chiacchia, Colorado Springs, CO (US);
Hellmuth Stephen Witte, Colorado Springs, CO (US);
Linear Technology Corporation, Milpitas, CA (US);
Abstract
An efficiency measuring circuit may measure the efficiency of a DC-DC converter having a switching inductor with an internal DC resistance and a plurality of electronic switches that control current through the inductor. A duty cycle circuit may measure the duty cycle of current flowing through one of the electronic switches. A current sense circuit may measure the current flowing through one of the electronic switches. An inductor voltage sensor circuit may measure the voltage across the inductor. A computation circuit may compute the internal DC resistance of the switching inductor based in part on the duty cycle measured by the duty cycle circuit and the current measured by the current sense circuit. The computation circuit may also compute the efficiency of the DC-DC converter.