Multi-layer transformer apparatus and method
US6198374A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Apr 1, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/2804
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multi-layer transformer includes a plurality of tapes having a magnetic core area disposed on at least one of the layers forming a magnetic core of the transformer. A primary winding is disposed on at least one of the layers. A secondary winding is disposed on at least one of the layers. A thin layer made of a lower permeability dielectric material is disposed proximate at least one of the windings. A first plurality of interconnecting vias connect the primary winding between the tapes. A second plurality of interconnecting vias connect the secondary winding between the tapes. Magnetic flux is induced to primarily flow into the core area. Magnetic coupling and dielectric breakdown between the windings are improved. A lower cost and smaller sized transformer can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.