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:
Feb. 15, 2005
Filed:
May. 20, 2003
John M. Neilson, Norristown, PA (US);
Francis J. Kub, Arnold, MD (US);
Karl D. Hobart, Upper Marboro, MD (US);
John M. Neilson, Norristown, PA (US);
Francis J. Kub, Arnold, MD (US);
Karl D. Hobart, Upper Marboro, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A double-side IGBT (DIGBT) phase leg architecture that uses the DIGBT as a substitute for a free wheeling diode to achieve reduced turn-on loss and reduced reverse recovery peak current during turn-on is described and characterized. Approximately a 50% reduction in reverse recovery peak current and an 80% reduction in recovery charge are achieved. In addition, low power dissipation (≈1 A current level) protection circuitry is described that can be incorporated into the DIGBT phase leg architecture to allow the flow of reverse current even if the gate driver circuit is disabled so that conventional high current free wheeling diodes are not required to provide protection.