Internal voltage protection circuit

Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor

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361 916, 361 18, 361111, H02H 320

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active

061117374

ABSTRACT:
An internal circuitry protection scheme which protects on-IC circuitry when an external regulator voltage pin is shorted to a higher voltage. The circuit prevents damage to the on-die circuitry that is on the internal voltage rail, by clamping the received voltage, thereby eliminating the chance of damaging the on die circuitry. The circuit offers protection even if the voltage difference is large, but the difference remains small between the internal rail and the external regulated voltage under normal operation.

REFERENCES:
patent: 5032742 (1991-07-01), Zanders
patent: 5347185 (1994-09-01), Tailliet
patent: 5438213 (1995-08-01), Tailliet
patent: 5444591 (1995-08-01), Chokhawala et al.
patent: 5581432 (1996-12-01), Wellnitz et al.
patent: 5963407 (1999-10-01), Fragapane et al.
Rountree et al., "NMOS Protection Circuitry," IEEETransactions on Electronic Devices, vol. ED-32, No. 5, May 1985, pp. 910-917.
Duvvury et al, "ESD: A Pervasive Reliability Concern for IC Technologies," Proceedings of the IEEE, vol. 81, No. 5, May 1993, pp. 690-702.
Welsher et al., "Design for Electrostatic-Discharge (ESD) Protection in telecommunications Products," AT&T Technical Journal, May/Jun. 1990.
Greason et al., "The Effects of Electrostatic Discharge on Microelectronic Devices--A Review," IEEE Transactions on Industry Applications, vol. 1A-2O, No. 2, Mar./Apr. 1984, pp. 247-252.
Amerasekera et al., "ESD in Integrated Circuits," Quality and Reliability Engineering International, vol. 8, 259-272 (1992), Feb. 1992.
Avery, "A Review of Electrostatic Discharge Mechisms and On-Chip Protection Techniques to Ensure Device Reliability," Journal of Electrostatics, 24 (1990), pp. 111-130. (No Month).

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