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. 19, 2018
Filed:
Jun. 12, 2015
Allegro Microsystems, Llc, Worcester, MA (US);
Soo-Chang Choe, Andover, MA (US);
Craig Petrie, Merrimack, NH (US);
Allegro MicroSystems, LLC, Manchester, NH (US);
Abstract
A ground fault detection circuit is configured to detect a ground fault in a circuit or system that has more than one ground reference. In an embodiment, an electronic circuit includes a first circuit coupled to a first ground node. The first ground node is coupled to a first ground reference. The electronic circuit also includes a second circuit coupled to a second ground node. The second ground node is coupled to a second ground reference. The ground fault detection circuit is configured to detect an open circuit between the first ground node and the first ground reference or between the second ground node and the second ground reference by comparing a voltage at the first ground node to a voltage at the second ground reference or comparing a voltage at the second ground node to a voltage at the first ground reference.