Power off controlling circuit and power-off controlling method
US7956678B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2009 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Feb 4, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/223
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power-off controlling circuit and a power-off controlling method that control power-off of an integrated circuit based on the size of leakage currents. The power-off controlling circuit includes a model circuit section that includes a model circuit made by modeling a basic circuit of an integrated circuit, a voltage comparing circuit section that compares an output voltage charged by a leakage current occurred at the model circuit and a preset reference voltage, a decision circuit section that measures an arrival time until the output voltage reaches the reference voltage from the compared result and decides a size of the leakage current from the measured result, and a power-off controlling circuit section that controls power-off of the integrated circuit on the basis of the decided size of the leakage current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.