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:
Jun. 18, 2002
Filed:
Mar. 23, 2001
Applicant:
Inventors:
Manfred Bruckmann, Nuremberg, DE;
Walter Springmann, Adelsdorf, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/122 ; H02M 7/68 ; H02M 7/44 ;
U.S. Cl.
CPC ...
H02H 7/122 ; H02M 7/68 ; H02M 7/44 ;
Abstract
The present invention relates to an active overvoltage protection apparatus for a bidirectional power switch which has two back-to-back in series connected semiconductor switches in the “common collector mode” topology. The overvoltage protection apparatus has a diode network which is linked to gate and emitter connections of the bidirectional power switch in the in such a manner as to provide a voltage clamping circuit for each of the semiconductor switches in the bidirectional power switch.