Continuously charged isolated supply network for secure logic applications
US9853640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2015 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Sep 26, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A floating core network for secure isolation of a circuit from an external supply interface is described. Isolation of a core is accomplished through a dynamic current limiting network providing an isolated core voltage to the core; and an isolated supply for the corresponding core that is continuously recharged by the dynamic current limiting network. The dynamic current limiting network can include two control loops, one control loop providing a fixed gate voltage to a p-type transistor supplying current to the isolated supply and another control loop providing a fixed gate voltage to an n-type transistor sinking current from the isolated supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.