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:
Jul. 08, 2008
Filed:
Jun. 16, 2004
Johan Christiaan Halberstadt, Nijmegen, NL;
Johan Christiaan Halberstadt, Nijmegen, NL;
NXP B.V., Eindhoven, NL;
Abstract
There is provided a switch mode power supply circuit including at least one inductive component coupled to an associated switching device for cyclically connecting the inductive component to a source of power. The circuit includes a signal output representative of a voltage at a junction of the at least one inductive component to the switching device. The circuit further comprises a hard switching amplitude detector for deriving a measure of hard switching amplitude occurring in operation in the switching device the detector including a signal processing path for receiving the signal output and generating the measure of hard switching amplitude therefrom. The signal path includes: a signal differentiator for imperfectly differentiating the signal output to generate a corresponding imperfectly differentiated signal; and a signal integrator for integrating the imperfectly differentiated signal in a temporally-gated manner for generating the measure of hard switching.