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:
Jul. 14, 2020
Filed:
Feb. 20, 2019
Maxim Integrated Products, Inc., San Jose, CA (US);
Marco A. Zuniga, Berkeley, CA (US);
Michael David McJimsey, Danville, CA (US);
Brett A. Miwa, Wellesley, MA (US);
Chi-Teh Chiang, San Jose, CA (US);
Ilija Jergovic, Palo Alto, CA (US);
Urs Harald Mader, Cupertino, CA (US);
Maxim Integrated Products, Inc., San Jose, CA (US);
Abstract
A current sense device includes a reference transistor for electrically coupling to a power transistor, a sense transistor for electrically coupling to the power transistor, and control circuitry. The control circuitry is configured to (a) control current through the sense transistor such that a voltage at the sense transistor has a predetermined relationship to a voltage at the power transistor, and (b) control current through the sense transistor according to one or more operating conditions at the reference transistor, to compensate for aging of the power transistor.