Electricity: electrical systems and devices – Safety and protection of systems and devices – Load shunting by fault responsive means
Reexamination Certificate
2005-06-06
2010-06-22
Jackson, Stephen W (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Load shunting by fault responsive means
Reexamination Certificate
active
07742265
ABSTRACT:
In one embodiment, an ESD protection circuit comprises a switchable current sinking circuit connected to a positive ESD clamp rail voltage, which may be a power supply voltage, and a single trigger control circuit coupled to a control connection of the switchable current sinking circuit. The single trigger control circuit may be configured to couple the control connection of the switchable current sinking circuit to a negative ESD clamp rail voltage, which may be signal ground, during an ESD event occurring on the positive ESD clamp rail connection. In one embodiment, the switchable current sinking circuit is capable of sinking large amounts of current, and the ESD protection circuit is tolerant of rail voltages that exceed the breakdown voltage of semiconductor devices used in constructing the ESD circuit. In one embodiment, the single trigger control circuit is implemented with a single n-well, thereby minimizing the amount of required silicon area during fabrication of the ESD protection circuit.
REFERENCES:
patent: 5717560 (1998-02-01), Doyle et al.
patent: 5907464 (1999-05-01), Maloney et al.
patent: 5956219 (1999-09-01), Maloney
patent: 6008970 (1999-12-01), Maloney et al.
patent: 6194917 (2001-02-01), Deng
patent: 6268993 (2001-07-01), Anderson
patent: 6560081 (2003-05-01), Vashchenko et al.
patent: 6577481 (2003-06-01), Steinhoff et al.
patent: 6690555 (2004-02-01), Pasqualini
patent: 6744610 (2004-06-01), Chang et al.
patent: 6747501 (2004-06-01), Ker et al.
patent: 6760209 (2004-07-01), Sharpe-Geisler
patent: 6768176 (2004-07-01), Litfin
patent: 6788507 (2004-09-01), Chen et al.
patent: 6800906 (2004-10-01), Cheng
patent: 6829126 (2004-12-01), Lee et al.
patent: 6838775 (2005-01-01), Takahashi
patent: 6844595 (2005-01-01), Chen
patent: 6864536 (2005-03-01), Lin et al.
patent: 6876529 (2005-04-01), Li
patent: 7180331 (2007-02-01), Gosmain et al.
patent: 7230806 (2007-06-01), Poon et al.
Sedra, Adel, and Kenneth Smith. Microelectronic Circuits. 4th ed.. New York: Oxford University Press, 1998. Print.
Timothy J. Maloney, Steven S. Poon, and Lawrence T. Clark, “Methods for Designing Low-leakage Power Supply Clamps,” 2003, EOS/ESD Symposium, 7 pages.
Bauer Scott
Hood Jeffrey C.
Jackson Stephen W
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Standard Microsystems Corporation
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