Method and circuit for hot swap protection
US6810458B1 · kind B1 · utility
9Cited by
19References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2002 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Apr 25, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4081
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hot swap protection circuit (40) for an integrated circuit being plugged into a powered-up system includes a first circuit (10) for detecting a hot swap condition, a second circuit (20) coupled to the first circuit for preventing a pn junction diode (52) in a pull-up transistor (32) from going into a forward bias condition, and a third circuit (30) coupled to the first and second circuits for preventing the pull-up transistor from turning on during the hot swap condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.