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:
Apr. 28, 2009
Filed:
Aug. 18, 2006
Richard R. Billig, Los Gatos, CA (US);
David J. Schanin, Denver, CO (US);
Richard R. Billig, Los Gatos, CA (US);
David J. Schanin, Denver, CO (US);
Bayview Ventures, Inc., Denver, CO (US);
Abstract
A spread-spectrum power converter uses an inter-cycle duty-cycle error compensation to achieve a combination of high-precision tracking of a target average duty cycle and a favorable noise signature. The pulse train consists of a series of cycles having cycle durations of a positive integer of clock cycles, pulse durations of a whole number of clock cycles, and duty cycles corresponding to a ratio of pulse durations over cycle durations. The pulse durations are selected at least in part as functions of a target average duty cycle, the respective cycle durations, and a ripple (or other) error from other cycles in the train. The cycle durations can also be in part a function of the target average duty cycle so that the duty cycle errors can be minimized.