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:
Dec. 10, 2013
Filed:
Dec. 03, 2010
Johann Baptist Daniel Kuebrich, Schlüsselfeld, DE;
Markus Schmid, Jettingen-Scheppach, DE;
Thomas Antonius Duerbaum, Baiersdorf, DE;
Frans Pansier, Nuenen, NL;
Gian Hoogzaad, Mook, NL;
Hans Halberstadt, Groesbeek, NL;
Johann Baptist Daniel Kuebrich, Schlüsselfeld, DE;
Markus Schmid, Jettingen-Scheppach, DE;
Thomas Antonius Duerbaum, Baiersdorf, DE;
Frans Pansier, Nuenen, NL;
Gian Hoogzaad, Mook, NL;
Hans Halberstadt, Groesbeek, NL;
NXP B.V., Eindhoven, NL;
Abstract
Consistent with an example embodiment, there is a method of controlling a synchronous rectifier having an input signal having oscillations therein and a switch which is switchable between an open state and a closed state. The method comprises filtering the input signal to produce a filtered signal, comparing the filtered signal with a reference value, and opening the switch in response to the comparison, in which the filtering is active filtering. The active filtering may be based on determination of the peaks (positive and/or negative) of the signal, either directly, including a quarter period offset, or including decay—or a combination of the above; alternatively, the active filtering may be based on the a smoothing functions such as a switched low-pass filter or a short time integrator.