LVTSCR ESD protection clamp with dynamically controlled...

Details LVTSCR ESD protection clamp with dynamically controlled... LVTSCR ESD protection clamp with dynamically controlled...

2005-11-29

2005-11-29

Leja, Ronald (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Load shunting by fault responsive means

C257S355000

Reexamination Certificate

active

06970335

ABSTRACT:
In an SCR-based ESD protection clamp, the voltage overshoot during an ESD event is reduced by separately controlling the voltage pulse to the drain and emitter contacts of the SCR. The voltage pulse to the drain is preferably delayed using a delay circuit such as an RC circuit. This allows double conductivity modulation to be achieved with lower voltage overshoot.

REFERENCES:
patent: 5528188 (1996-06-01), Au et al.
patent: 6055143 (2000-04-01), Yu
patent: 6433979 (2002-08-01), Yu
patent: 6465848 (2002-10-01), Ker et al.
patent: 6720624 (2004-04-01), Vashchenko et al.
patent: 6822294 (2004-11-01), Vashchenko et al.

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