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:
May. 20, 2025
Filed:
Oct. 26, 2022
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventors:
Assignee:
Allegro MicroSystems, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/158 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/1582 (2013.01); H02M 1/0025 (2021.05);
Abstract
An adaptive current limit circuit is provided in a power converter to achieve a fixed output current limit over duty cycle. In a converter including a high side switch, a low side switch coupled to the high side switch at a switch node, and an inductor coupled between an input voltage source and the switch node, the adaptive current limit circuit is coupled to receive the high side control signal and configured to generate an adaptive current limit threshold that varies based at least in part on the duty cycle of the high side switch.