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:
Nov. 10, 2020
Filed:
Apr. 30, 2018
Applicant:
Nxp B.v., Eindhoven, NL;
Inventor:
Hermanus Johannes Effing, Overasselt, NL;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 5/00 (2006.01); H02H 5/04 (2006.01); H02H 7/12 (2006.01); H02M 1/32 (2007.01);
U.S. Cl.
CPC ...
H02H 5/042 (2013.01); H02H 7/1203 (2013.01); H02M 1/32 (2013.01); H02M 2001/327 (2013.01);
Abstract
A circuit for measuring temperature of an external switch is disclosed. The circuit includes a variable resistor, a switch coupled to the variable resistor in series, a fixed value resistor coupled to the variable resistor and a comparator coupled between the variable resistor and the fixed value resistor. The circuit is configured to compare voltage drop between a drain and a source of the external switch when the external switch is in ON state with voltage drop at the variable resistor and output a signal to indicate an overtemperature based on the comparing.