Supervision circuit to detect very fast power supply drops

Details Supervision circuit to detect very fast power supply drops Supervision circuit to detect very fast power supply drops

2011-08-02

2011-08-02

Fureman, Jared (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

C361S086000

Reexamination Certificate

active

07990672

ABSTRACT:
This invention is power supply protection for complex digital circuits employing an external high voltage supply and an internally generated low voltage core logic supply. Precision analog comparators distinguish between short circuit conditions on the internal supply at various ramp down rates including slow brown out decay. Control circuitry protects I/O circuits from exposure to high currents as a result of possible floating gate conditions in the output circuitry.

REFERENCES:
patent: 4428020 (1984-01-01), Blanchard, Jr.
patent: 2008/0239605 (2008-10-01), Kataoka et al.
patent: 06224701 (1994-08-01), None
English Language Abstract of Japanese Patent (JP 06224701 A), Aug. 1994.

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