Overvoltage protection device for the protection of a power transistor having a MOS control terminal
US5963407A · kind A · utility
24Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1998 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Feb 9, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/0828
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A fast operating, electronic overvoltage protection device intended for a power transistor having at least one control terminal of the MOS type is disclosed. The device comprises a Zener diode associated with the power transistor and integrated together therewith in a semiconductor substrate, and a second transistor connected to the power transistor into a Darlington configuration and also connected to the Zener diode. The protection from overvoltages provided by the device is very fast in operation, and can be implemented in integrated form at reduced cost and without introducing parasitic elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.