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:
Feb. 26, 2002
Filed:
Mar. 04, 2000
Mark Elliott Jacobs, Dallas, TX (US);
Other;
Abstract
A method and apparatus for dynamically adjusting operation of a converter device to improve conversion efficiency. The converter device includes an inverter and a synchronous rectifier, and is driven by a plurality of drive signals having a duty cycle. The method comprises the steps of: (a) varying timing of a first drive signal a first amount; (b) observing the duty cycle of the conversion device; (c) further varying the first drive signal appropriately to alter the duty cycle toward an extremum; and (d) continuing to operate the converter device with the duty cycle proximate the extremum. In its most preferred embodiment, the method of the present invention includes the further step of: (e) periodically effecting steps (a)-(c) varying a drive signal other than the first drive signal. The comprises: (a) a drive varying means for varying timing of selected individual drive signals of the plurality of drive signals; and (b) a measuring means connected with the drive varying means for measuring the duty cycle. In its most preferred embodiment, the apparatus further comprises: (c) a control means for controlling the drive varying means. The control means is connected with the measuring means and with the drive varying means, and effects the controlling to operate the converter device proximate an extremum for the duty cycle.