Michael S Lawrence

US Patent:

D489694, May 11, 2004

Filed:

Feb 22, 2002

Appl. No.:

29/156079

Inventors:

Jin He - Plano TX
Michael Duane Lawrence - Rowlett TX
Victor Ke-Ji Lee - Plano TX
Donald Bruce Rose - Rockwall TX

Assignee:

Innoveta Technologies - Plano TX

International Classification:

1303

US Classification:

D13182

US Patent:

6927661, Aug 9, 2005

Filed:

May 2, 2003

Appl. No.:

10/428963

Inventors:

Jin He - Plano TX, US
Michael Duane Lawrence - Rowlett TX, US
Victor Ke-Ji Lee - Plano TX, US
Donald Bruce Rose - Rockwall TX, US

Assignee:

TDK Innoveta Inc. - Richardson TX

International Classification:

H01F005/00

US Classification:

336200, 336223, 336232, 296021

Abstract:

The magnetic device consists of a planar winding board, which contains the windings for both the inductor and the transformer. Thus, this invention centers on integrating the windings of multiple magnetic devices, not integrating the cores. By connecting the transformer secondary winding directly to the output inductor winding without using any intermediate headers and/or termination pins or conductive copper traces, both electrical path and the termination resistance will be minimized. Furthermore, the number of headers or termination pins required will also be reduced, which helps to not only alleviate the issue associated with co-planarity of the termination pins, but also reduce the cost of the material and manufacturing.