Fabrication method and structure for embedded core transformers

Details Fabrication method and structure for embedded core transformers Fabrication method and structure for embedded core transformers

2008-05-09

2009-02-10

Nguyen, Tuyen T. (Department: 2832)

Inductor devices

Coils of special configuration

Toroidal

Reexamination Certificate

active

07489226

ABSTRACT:
An embedded core electrical transformer (120) for DC to DC current conversion at a switching frequency of 1 MHz has reduced volume and weight with increased power density. The electrical transformer (120) utilizes a plurality of conductive elements (132) disposed inside a hollow cavity (128) used to embed two magnetic cores (134, 136). The conductive elements (132) encircle three sides of the embedded cores (134, 136) and interface with a multilayer PCB (137) which includes conductive traces formed therein to encircle a fourth side of the embedded cores and to form primary and secondary winding circuits.

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