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:
May. 14, 2019
Filed:
Mar. 09, 2018
Semikron Elektronik Gmbh & Co. KG, Nuremberg, DE;
Peter Beckedahl, Oberasbach, DE;
Gunter Königsmann, Langensendelbach, DE;
Bastian Vogler, Fürth, DE;
Markus Müller, Nuremberg, DE;
SEMIKRON ELEKTRONIK GmbH & CO. KG, Nuremberg, DE;
Abstract
A control device for a power semiconductor switch, has a first, second and third electrical control device terminal, and a control device that according to a control signal generates an actuation voltage on the third control device terminal and actuates the power semiconductor switch. An overcurrent detection circuit determines a first voltage corresponding to a primary power semiconductor switch voltage present between the first and second control device terminals and, if the first voltage, further to commence the generation of an actuation voltage for a switch-on of the power semiconductor switch, and if the voltage exceeds a reference voltage, to generate an overcurrent detection signal. A blocking circuit blocks the output of the overcurrent detection signal from the overcurrent detection circuit, if a control current flowing in the third control device terminal for the actuation of the power semiconductor switch exceeds a first current value and/or is designed to block the output of the overcurrent detection signal from the overcurrent detection circuit, if the actuation voltage is smaller than a first voltage value.