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:
Sep. 22, 2009
Filed:
Aug. 07, 2007
Ahmed A. Emira, Mission Viejo, CA (US);
Ahmed A. Emira, Mission Viejo, CA (US);
Newport Media, Inc., Lake Forest, CA (US);
Abstract
A DC-DC converter and method of improving the efficiency of a DC-DC converter at low load current levels using pulse skipping modulation (PSM) with controllable burst duration NT, where Tis the clock cycle interval. As the average load current increases, the time between bursts decreases so that average inductor current matches the load current. The burst duration is kept around NTby controlling the duty cycle of the output switches. The higher the load current, the higher is the duty cycle of the output switches. No current sensing is needed. The optimum burst duration for best efficiency curve is a function of the load capacitor.