Power voltage driver circuit for low power operation mode
US6545531B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Dec 28, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/2227
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power voltage driver circuit includes: a constant voltage generating unit for generating a first constant voltage and a second constant voltage; a clock input buffer unit using an internal step-down voltage as a power source; a control unit for receiving an operation control signal indicating the low power operation mode; a voltage comparing unit controlled in response to the output signal from the control unit, for stopping the operation in the low power operation mode, and receiving the first and second constant voltages in the other operation modes, and generating a signal by comparing and amplifying the first and second constant voltages with a reference voltage; and a driver unit controlled in response to the output signal from the control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.