Overvoltage protection device for the protection of a power tran

Details Overvoltage protection device for the protection of a power tran Overvoltage protection device for the protection of a power tran

1998-02-09

1999-10-05

Jackson, Stephen

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

361 18, 361 56, 361115, H02H 300

Patent

active

059634073

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.

REFERENCES:
patent: 5072268 (1991-12-01), Rumennilt
patent: 5453900 (1995-09-01), Feldtkeller
patent: 5502338 (1996-03-01), Suda et al.
patent: 5525826 (1996-06-01), Palara
European Search Report from European Patent Application 97830072.1, filed Feb. 19, 1997.
Revue Generale De L'Electricitie, No. 2, Feb. 1, 1994, pp. 8-12, Lorenz, L. "Drive and Protection Concepts For IGBTs".
Proceedings of the International Symposium on Power Semiconductor Devices (ISPSD), Davos, CH, May 31-Jun. 2, 1994, No. SUMP, 6, May 31, 1994, Fichtner W. (Ed), pp. 31-35, Yasukazu Seki, et al "A New IGBT With a Monolithic Over-Current Protection Circuit".

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