Cascode protected negative voltage switching
US7382591B2 · kind B2 · utility
1Cited by
3References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2005 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Jul 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A double cascode protected switchable voltage source may be used to selectively provide positive or negative voltage sources, for example, to a flash memory. The positive supply may be connected through a PMOS pass device to a first cascode protection device. A negative supply may be connected through an NMOS pass device and an NMOS cascode protection device to an output. The circuits may be designed so that exceeding snapback limits and gate aided drain breakdown are less likely.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.