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. 30, 1992
Filed:
Jul. 26, 1989
Applicant:
Inventors:
Claudio Contiero, Buccinasco, IT;
Bruno Murari, Monza, IT;
Assignee:
SGS-Thomson Microelectronics, s.r.l., Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 84 ; 307127 ; 361 92 ; 357 2313 ;
Abstract
An integrated circuit self-protected against a reversal of its supply battery polarity comprises a first DMOS power transistor connected with its source electrode side to an electric load to be driven toward ground, and a second, protective DMOS transistor which is connected with its source electrode side to a positive pole of the battery and with its drain electrode side to the drain electrode of the first transistor. The first and second transistors have in common the drain region formed on a single pod in the semiconductor substrate.