High voltage generator in semiconductor memory device
US7123079B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2004 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Apr 13, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C5/145
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A high voltage generator includes a high voltage level detector for comparing a boosted high voltage with a reference voltage and generating an oscillator control signal being a first logic level in response to a comparison result; a clock feedback block for receiving the oscillator control signal and an inverse pumping control signal and keeping an oscillator enable signal in the first logic level for a predetermined period; an oscillator for generating a pumping control signal in response to the oscillator enable signal and outputting the inverse pumping control signal to the clock feedback block, wherein the pumping control signal is periodically toggled; and a charge pumping block for generating the boosted high voltage in response to the pumping control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.