Early trigger of ESD protection device by a negative voltage pum

Details Early trigger of ESD protection device by a negative voltage pum Early trigger of ESD protection device by a negative voltage pum

1997-10-22

2000-07-18

Sherry, Michael J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

361 56, 361 912, 361 913, 361 915, H02H 322

Patent

active

060915935

ABSTRACT:
A transient voltage pump is provided to generate a negative voltage pulse for triggering turn-on of an ESD protection device. As VDD-to-VSS voltage increases rapidly in the initial ESD event, the voltage across the ESD protection device is larger than the trigger voltage of the ESD device while the ESD voltage is still at substantially lower voltage. These negative voltage pulses are used to earlier trigger the NMOS transistor before the ESD transient voltage actually reaches the trigger voltage. The present invention improves the ESD performance of an ESD protection device, such as a MOSFET or bipolar transistor, which is provided for protecting the power bus or IC pins during an ESD event.

REFERENCES:
patent: 4503448 (1985-03-01), Miyasaka
patent: 5218222 (1993-06-01), Roberts
patent: 5272371 (1993-12-01), Bishop et al.
patent: 5290724 (1994-03-01), Leach
patent: 5399928 (1995-03-01), Lin et al.
patent: 5508224 (1996-04-01), Jang
patent: 5508649 (1996-04-01), Shay
patent: 5545910 (1996-08-01), Jang
patent: 5559659 (1996-09-01), Strauss
patent: 5838146 (1998-11-01), Singer
patent: 5852541 (1998-12-01), Lin et al.
A. Amerasekera, et al., Substrate Triggering and Salicide Effects on ESD Performance and Protection Circuit Design in Deep Submicron CMOS Processes, IEDM-95, pp. 547-550.
A. Amerasekera, et al., ESD in Silicon Integrated Circuits, John Wiley & Sons, pp. 40-48 and 68-72 (No Date).

Affiliated with

Also associated with

Rating

Early trigger of ESD protection device by a negative voltage pum does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Early trigger of ESD protection device by a negative voltage pum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Early trigger of ESD protection device by a negative voltage pum will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2043315