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. 11, 2025
Filed:
Oct. 23, 2023
Allegro Microsystems, Llc, Manchester, NH (US);
Thomas Ross, West Lothian, GB;
James Mcintosh, East Lothian, GB;
Allegro MicroSystems, LLC, Manchester, NH (US);
Abstract
A CAN transmitter includes an output branch, a replica branch including a replica of the output branch, and a feedback network. The output branch includes a first resistive element controlled by a first bias voltage and a second resistive element controlled by a second bias voltage. The replica branch has a feedback node that is replicated at a midpoint between the CANH bus terminal and the CANL bus terminal. The feedback network has a first input coupled to the feedback node, a second input configured to receive a midpoint reference voltage indicative of a desired midpoint voltage between the CANH and CANL terminals, and an output at which the first bias voltage is provided. A resistance controller is coupled to a control terminal of the second resistive element and configured to generate the second bias voltage based on a predetermined reference voltage and a bias current.