High voltage generation and regulation system for digital multilevel nonvolatile memory
US6967524B2 · kind B2 · utility
3Cited by
15References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2004 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Nov 16, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high voltage generator provides high voltage signals with different regulated voltage levels. A charge pump generates the high voltage, and includes a quadrature phase forward and backward Vt-canceling high-voltage self-biasing charge pump with a powerup-assist diode. A high voltage series regulator generates the high voltage supply levels, and includes slew rate enhancement and trimmable diode regulation. A nested loop regulator eliminates shunt regulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.