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:
Apr. 08, 1997
Filed:
Jul. 18, 1995
Wayne C Bowman, Allen, TX (US);
Ashraf W Lotfi, Rowlett, TX (US);
Matthew A Wilkowski, Mesquite, TX (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A magnetic device, a method of manufacturing the magnetic device and a DC/DC converter employing the magnetic device. The magnetic device comprises: (1) a first core-portion composed of a magnetic material and having first and second legs associated therewith, the first leg having a first end face and a predetermined first cross-sectional area, the second leg having a second end face and a predetermined second cross-sectional area different from the first cross-sectional area, (2) a winding assembly having first and second windings associated therewith and disposed about first and second winding apertures, respectively, the first and second legs passing through the first and second winding apertures, respectively, to couple the first and second windings magnetically to the first and second legs, respectively, (3) a second core-portion composed of the magnetic material and adapted to mate with the first and second legs of the first core-portion and (4) an interstitial non-magnetic material of a predetermined uniform thickness disposed on the first and second end faces and joining the first and second core-portions to form a core for the magnetic device, the non-magnetic material forming a uniform air gap in the first and second legs.