Voltage generators adaptive to low external power supply voltage
US9053814B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 2012 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Jul 27, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/2272
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Voltage generators may generate a level of a high target voltage with respect to a low external power supply voltage. A reference voltage generator includes a clamp regulator which is driven by a first power supply voltage supplied from an external source and receives a first voltage to generate a clamp voltage, and a level amplifier which is driven by a second power supply voltage that is higher than the first power supply voltage and receives the clamp voltage to generate a reference voltage. The clamp voltage may be set to have a voltage level which results in a successful restore operation with respect to a memory cell array in a dynamic random access memory (DRAM).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.