Hybrid protection circuit for electrostatic discharge and...

Details Hybrid protection circuit for electrostatic discharge and... Hybrid protection circuit for electrostatic discharge and...

2007-11-02

2010-10-05

Fureman, Jared J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

C361S091100, C361S111000

Reexamination Certificate

active

07808754

ABSTRACT:
A hybrid protection circuit may include a stress detection circuit, a clamp device, and an on-time adjustment circuit. The stress detection circuit may output a detection signal that may be activated when a positive ESD event or a positive EOS event occurs. The on-time adjustment circuit may receive a detection signal and output a clamping signal that may be in an active state until charges generated by a positive ESD event or a positive EOS event are discharged. The clamp device may discharge charges induced by an ESD event or an EOS event. Therefore, a hybrid protection circuit may protect the internal core from both an ESD event and an EOS event.

REFERENCES:
patent: 5825603 (1998-10-01), Parat et al.
patent: 5946177 (1999-08-01), Miller et al.
patent: 6104234 (2000-08-01), Shin et al.
patent: 7382592 (2008-06-01), Chen et al.
patent: 2004/0109271 (2004-06-01), Takeda
patent: 2004/0136126 (2004-07-01), Smith
patent: 01/11750 (2001-02-01), None

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