Integrated circuit self-protected against reversal of the supply

Details Integrated circuit self-protected against reversal of the supply Integrated circuit self-protected against reversal of the supply

1989-07-26

1992-06-30

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

307127, 361 92, 357 2313, H02H 318

Patent

active

051269112

ABSTRACT:
An integrated circuit self-protected against a reversal of its supply battery polarity comprises a first DMOS power transistor connected with its source electrode side to an electric load to be driven toward ground, and a second, protective DMOS transistor which is connected with its source electrode side to a positive pole of the battery and with its drain electrode side to the drain electrode of the first transistor. The first and second transistors have in common the drain region formed on a single pod in the semiconductor substrate.

REFERENCES:
patent: 3712995 (1973-01-01), Steudel
patent: 3829709 (1974-08-01), Maigret et al.
patent: 3940785 (1976-02-01), Genesi
patent: 4423456 (1983-12-01), Zaidenweber
patent: 4589004 (1986-05-01), Yasuda et al.
patent: 4698582 (1987-10-01), Braun et al.
patent: 4858055 (1989-08-01), Okitaka
patent: 4958251 (1990-09-01), Cini et al.
patent: 5027250 (1991-01-01), Cini et al.
Patent Abstracts of Japan vol. 13, No. 8 (E-702) (3356) Jan. 10, 1989.

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