Power supply ESD protection circuit

Details Power supply ESD protection circuit Power supply ESD protection circuit

1997-06-16

1998-10-20

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

361111, H02H 322

Patent

active

058256016

ABSTRACT:
An electrostatic discharge (ESD) protection circuit includes first and second supply terminals, a current source, a shunt transistor, an inverter and a voltage level shifting device. The shunt transistor is coupled between the first and second supply terminals and has a control terminal. The inverter includes an input coupled to the current source, an output coupled to the control terminal of the shunt transistor and pull-up and pull-down transistors coupled between the first and second supply terminals. The pull-up and pull-down transistors have control terminals which are coupled to the input. The voltage level shifting device is coupled between the input and the control terminal of one of the pull-up and pull-down transistors.

REFERENCES:
patent: 5208719 (1993-05-01), Wei
patent: 5311391 (1994-05-01), Dungan et al.
patent: 5463520 (1995-10-01), Nelson
patent: 5594611 (1997-01-01), Consiglio et al.

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