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:
Dec. 03, 2024
Filed:
Jul. 13, 2023
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventors:
Karl Rinne, Cork, IE;
Joseph Duigan, Peymeinade, FR;
Assignee:
Allegro MicroSystems, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/691 (2006.01); H02M 1/08 (2006.01); H02M 3/335 (2006.01); H02M 1/42 (2007.01);
U.S. Cl.
CPC ...
H03K 17/691 (2013.01); H02M 1/08 (2013.01); H02M 3/33523 (2013.01); H02M 3/33576 (2013.01); H02M 1/4233 (2013.01);
Abstract
Switch drive circuits include galvanically isolated switch circuits with power transfer from the switch driver input side to the switch side. A switch drive circuit uses a single transformer to transfer control signals to a secondary side for control of the switch along with power to a secondary side circuit to drive the switch in response to the control signals. By detecting the control signal first before drawing current, the effects of leakage inductance in the transformer are reduced.