Power supply protection circuit and method
US8525581B2 · kind B2 · utility
1Cited by
2References
19Claims
0Family size
Inventor
Key dates
| Filing date | Sep 10, 2012 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Sep 10, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/07
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of protecting a power supply voltage in an integrated circuit is disclosed. The method includes storing charge in a charge reservoir capacitor (142), receiving a power supply sample voltage (140), and receiving a load power supply voltage (VDDL, 102). The power supply sample voltage is compared to the load power supply voltage (150). Charge is added from the charge reservoir capacitor (142) to the load power supply (VDDL) through transistor 126 and capacitor 144 in response to the step of comparing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.