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:
Mar. 25, 2014
Filed:
Jun. 22, 2011
Pierre Sardat, Le Raincy, FR;
Luis DE Sousa, Eragny sur Seine, FR;
Stephane Fontaine, Clichy, FR;
Valco Systemes de Controle Moteur, Cergy Saint Christophe, FR;
Abstract
A DC-DC voltage converter operating in zero-voltage switching mode with a switching threshold includes a plurality of interlaced cells, each cell having at least two controlled switches that are configured to be alternately closed and open, and each cell having an inductor in which an output current from the cell flows. The converter also includes a clock with a given switching period configured for triggering the switching of the switches between upper and lower control thresholds. A method for closed-loop control of the converter includes measuring, for each cell, an overrun period, determining a correction time corresponding to a minimum overrun period measured for the plurality of cells during an interlacing cycle, calculating an optimized switching period for the clock, and applying the optimized switching period to the clock to provide closed-loop control of the interlacing of the output currents from the plurality of cells of the converter.