Planar transformer having integrated cooling features
US6144276A · kind A · utility
29Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1998 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Apr 2, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/2876
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A planar electromagnetic device, such as a planar transformer or planar inductor, is provided with features for cooling that are formed integrally with the windings of the planar device. In a preferred embodiment the planar device uses winding layers (200) having fin portions (116). In a first alternative embodiment a helical winding (500) is formed from a winding stamping (400) having fin portions (412). In a second alternative embodiment, tube portions (802) are formed in a winding stamping (700) used to form a helical winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.