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:
Apr. 25, 2000
Filed:
Aug. 19, 1998
Rainald Sander, Muchen, DE;
Chihao Xu, Muchen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
Field-effect-controllable power semiconductor components with a source-connected load are made conducting via a control circuit with an integrated charge pump. When a generator connected to the source side is in operation, then the source potential becomes higher than the drain potential. A parasitic diode therefore carries current in the control circuit. That current turns on a parasitic bipolar transistor that limits the gate potential to a value that is no longer sufficient for making the power semiconductor component conducting. This effect is prevented by connecting a further diode in antiseries with the parasitic diode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile