Circuit arrangement for protection against electrostatic...

Details Circuit arrangement for protection against electrostatic... Circuit arrangement for protection against electrostatic...

2008-03-11

2008-03-11

Deberadinis, Robert L. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

C361S018000, C361S056000, C361S082000, C361S091100

Reexamination Certificate

active

10931170

ABSTRACT:
A circuit arrangement for protection against electrostatic discharge for a field-effect transistor is disclosed. The arrangement includes a first and a second controllable path each having a control terminal. The control terminals of the controllable paths are coupled to a source terminal of the field-effect transistor. A first terminal of the first controllable path is connected to a control terminal of the transistor, and a first terminal of the second controllable path is connected to a bulk terminal of the unipolar transistor. Second terminals of the controllable paths are connected to the drain terminal. A voltage regulating device includes the circuit arrangement and a comparator configured to generate a control signal in a manner dependent on a difference between two signals applied thereto. A control output of the comparator is coupled to the control terminal of the transistor.

REFERENCES:
patent: 5424892 (1995-06-01), Topp et al.
patent: 5453900 (1995-09-01), Feldtkeller
patent: 5917689 (1999-06-01), English et al.
patent: 5959332 (1999-09-01), Ravanelli et al.
patent: 6552879 (2003-04-01), Voldman
patent: 6678130 (2004-01-01), Ratner et al.
patent: 7068482 (2006-06-01), Chen
patent: 2002/0130366 (2002-09-01), Morishita
patent: 196 29 511 (1997-09-01), None
patent: WO 01/11685 (2001-02-01), None

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