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. 01, 2025
Filed:
Nov. 24, 2021
Siemens Aktiengesellschaft, Munich, DE;
Matthias Neumeister, Erlangen, DE;
Markus Pfeifer, Nuremberg, DE;
SIEMENS AKTIENGESELLSCHAFT, Munich, DE;
Abstract
Some circuits for controlling a semiconductor switch include: a contact for connection to a control terminal of the semiconductor switch; and a device to carry out a measurement of a value dependent on the level of the current flowing through the semiconductor switch, in the course of a switch-off process of the semiconductor switch. The value is either the level of the gate current at a point in time or in a time window after the start of the switch-off process or a timespan from the start of the switch-off process until a definable threshold value of the voltage drop across the semiconductor switch is reached. Depending on the size of the value, the device activates a control measure to reduce the change over time in the current flowing through the semiconductor switch.