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.

Date of Patent:
Apr. 13, 2021

Filed:

Feb. 12, 2019
Applicant:

Nxp B.v., Eindhoven, NL;

Inventors:

Xu Zhang, Chandler, AZ (US);

Siamak Delshadpour, Phonenix, AZ (US);

Ahmad Yazdi, Chandler, AZ (US);

Assignee:

NXP B.V., Eindhoven, NL;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 15/14 (2006.01); G01R 19/165 (2006.01); G01R 19/25 (2006.01); G01R 27/08 (2006.01); G01R 27/16 (2006.01);
U.S. Cl.
CPC ...
G01R 15/146 (2013.01); G01R 19/16528 (2013.01); G01R 19/2513 (2013.01); G01R 27/08 (2013.01); G01R 27/16 (2013.01);
Abstract

One example discloses a current monitoring device, including: a sense impedance configured to receive a current to be monitored; an impedance divider, coupled to the sense impedance, and configured to convert the current to be monitored to a differential voltage to be monitored; a reference circuit configured to generate a differential reference voltage; a comparator coupled to the impedance divider and the reference circuit and configured to output a signal if the differential voltage to be monitored is different than the differential reference voltage; and wherein the reference circuit includes a comparator trimming circuit configured to vary the differential reference voltage to compensate for offset biases in the comparator.


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