Apparatus for generating high voltage signal
US6356501B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2000 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | Dec 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/073
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high voltage generator provides a high voltage signal for compensating a threshold voltage loss in a semiconductor memory device. The high voltage generator includes: a level detection unit for detecting a voltage level of the high voltage signal to generate a high voltage enable signal when the voltage level of the high voltage signal reaches a predetermined target value; an oscillation unit, in response to the high voltage enable signal, for generating a plurality of clocks, the clocks including a first to a fourth clocks; a high-voltage charge pump unit, in response to the clocks, for increasing a voltage level of an external power signal to generate the high voltage signal to a high voltage node; and a power-on precharging unit, in response to a control signal, for initializing the high voltage node to a predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.