Voltage generator switching between alternating, first and second voltage values, in particular for programming multilevel cells
US6424121B1 · kind B1 · utility
11Cited by
3References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 15, 2000 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Jan 6, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A voltage generator formed of a charge circuit and a discharge circuit having a common programmable voltage divider with variable resistance; the programmable voltage divider including a plurality of resistors arranged in series and selectively connectable to define alternatively a step-wise increasing program voltage and a fixed verify voltage. The charge circuit formed of a voltage regulator supplying at the output the precise voltage value determined by the programmable voltage divider, and the discharge circuit intervening when the output voltage must be switched in a controlled manner from a higher value to a lower value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.