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. 01, 2011
Filed:
Feb. 15, 2008
Derek Bernardon, Villach, AT;
Dieter Haerle, Villach, AT;
Derek Bernardon, Villach, AT;
Dieter Haerle, Villach, AT;
Infineon Technologies AG, Neubiberg, DE;
Abstract
A circuit and method for capacitor effective series resistance measurement. One embodiment provides a method for measuring the effective series resistance of a capacitor having a capacitor voltage. The method includes amplifying the capacitor voltage with an AC coupled amplifier yielding a first amplified signal. The capacitor is discharged with a constant current for a measurement time thus causing a voltage swing of the capacitor voltage due to a voltage drop across the effective series resistance. The capacitor voltage is amplified with the AC coupled amplifier yielding a second amplified signal being dependent on the voltage swing. The effective series resistance is calculated from the first and the second amplified signals.