High efficiency on-chip 3D transformer structure
US9431164B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2015 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Aug 31, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2027/2819
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A transformer structure includes a first coil having two sections of spiral, with a top section including a plurality of metal layers occupying top X metal layers and a bottom section including a plurality of metal layers occupying bottom Z metal layers, where X and Z represent a number of metal layers having a specific number selected to provide a particular performance of the first coil. A second coil of the transformer is disposed between the two sections of the first coil and includes a plurality of metal layers where Y represents a number of vertically adjacent metal layers, with the specific number chosen to provide the particular performance, such that a sum X+Y+Z represents a total number of vertical metal layers for the transformer structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.