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. 28, 2006
Filed:
Apr. 07, 2004
Andreas Kiep, Munich, DE;
Andreas Kiep, Munich, DE;
Infineon Technologies AG, Munich, DE;
Abstract
A method for determining the switching state of a transistor having an insulated drive electrode. The drive electrode is charged during a switch-on cycle depending on a drive signal and is discharged during a switch-off cycle depending on the drive signal. The transistor turns on or turns off depending on the charge stored on the drive electrode. The temporal profile of a charging and discharging current of the drive electrode or the temporal profile of the charge stored on the drive electrode is evaluated in order to determine the switching state. A state signal dependent on the switching state is provided, as is an apparatus for carrying out this method.