ASIC latch-up recovery circuit

Details ASIC latch-up recovery circuit ASIC latch-up recovery circuit

2004-12-13

2009-02-17

Sherry, Michael J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

Reexamination Certificate

active

07492560

ABSTRACT:
An apparatus and method for controlling a power supply which is coupled to an integrated circuit (IC) that is subject to latch-up is provided. The apparatus includes a comparator circuit that compares a voltage across the IC with a threshold and provides a comparator output. A restart circuit that receives the comparator output, and that receives a fault status signal from the power supply is also included. The restart circuit initiates a restart by shutting off the power supply if the fault status signal is indicative of a latch-up condition in the IC. The restart circuit turns on the power supply if the comparator output indicates that the voltage across the IC is below the threshold.

REFERENCES:
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patent: 6064555 (2000-05-01), Czajkowski et al.
patent: 6473282 (2002-10-01), Lin et al.
patent: 2004/0228054 (2004-11-01), Shiotani

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