Planar transformer
US9711271B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 2013 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Nov 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2027/2819
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A planar transformer is provided, which comprises a plate-shaped conductor substrate with integrated primary winding, secondary winding and coupling winding. The conductor substrate has pairs of recesses, and a respective two-part ferromagnetic core having yoke legs is inserted through each pair of recesses. One leg of each core is surrounded by the primary winding or the secondary winding, while the coupling winding is looped around the remaining legs of the cores. At least a minimum total isolation separation distance made up of partial isolation separation distances between the coupling winding and adjacent yoke legs or adjacent windings is maintained for electrical isolation between the primary winding and the secondary winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.