Power management unit for a flash memory with single regulation of multiple charge pumps
US7403441B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2005 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Jan 19, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power management unit for a non-volatile memory device is proposed. The power management unit includes means for providing a reference voltage, resistive means for deriving a reference current from the reference voltage, means for generating a plurality of operative voltages from a power supply voltage, and means for regulating the operative voltages; in the power management unit of the invention, for each operative voltage the means for regulating includes means for deriving a scaled reference current from the reference current according to a scaling factor, further resistive means for deriving a rating voltage from the scaled reference current, means for deriving a measuring voltage from the operative voltage and the rating voltage, and means for controlling the operative voltage according to a comparison between the measuring voltage and the reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.