On-chip inductor with magnetic core
US7271693B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2006 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Apr 7, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inductor formed on an integrated circuit chip including one or more inner layers between two or more outer layers, inductor metal winding turns included in one or more inner layers, and a magnetic material forming the two or more outer layers and the one or more inner layers. In one embodiment, the magnetic material is a photoresist paste having magnetic particles. In another embodiment, the magnetic material is a series of magnetic metallic strips disposed on each of first and second portions of the two or more outer layers and on each of the one or more inner layers. The series of magnetic metallic strips on the first and second portions form a grid pattern. Other embodiments include an adjustable controlled compound deposit and control windings with adjustable electrical currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.