Method of forming a protection circuit and structure therefor

Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – Fusible element actuated

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C337S206000, C337S221000, C361S054000, C361S093100, C361S093700, C361S101000

Reexamination Certificate

active

06781502

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates, in general, to electronics, and more particularly, to methods of forming semiconductor devices and structure.
In the past, the electronics industry utilized various methods and devices to protect circuits from shorts and other voltage transient. In some applications it was desirable to plug or unplug electronic circuits from their power source without removing the power. This may occur when a circuit card was inserted or removed from a small system such as a personal computer or from a large system such as a telecommunications system that may have a large rack full of electronic cards. Cards often were removed and re-inserted without powering down the entire system. These situations were referred to as “hot swap” or “hot plug” applications since the power lines remain “hot” during the transfers.
During some hot plug events, the card being plugged in was defective and presented a permanent short to the power bus. This short often pre-existed on the card before it was plugged into the system. Control circuits often were used to detect such shorts that existed as the card was inserted into the system. However, shorts also could develop after the card was plugged into the system. The control circuit did not protect from such a short that developed after the card was inserted. The short often result in damage to the card or to the overall system.
Accordingly, it is desirable to have a method of protecting a circuit from a short that occurs after the card is plugged into a system.


REFERENCES:
patent: 3074006 (1963-01-01), Klees
patent: 3078410 (1963-02-01), Thomas
patent: 3109980 (1963-11-01), Wiley
patent: 3192441 (1965-06-01), Wright
patent: 3201606 (1965-08-01), Mamon
patent: 3317817 (1967-05-01), Gershen
patent: 3337744 (1967-08-01), Johnson
patent: 3395317 (1968-07-01), Hanson
patent: 3403320 (1968-09-01), Whitman, Jr.
patent: 3413522 (1968-11-01), Beszedics et al.
patent: 3448342 (1969-06-01), Jacobs
patent: 3473106 (1969-10-01), Sebastian
patent: 3505583 (1970-04-01), Branagan
patent: 3509450 (1970-04-01), McNulty
patent: 3531712 (1970-09-01), Giuseppe
patent: 3532936 (1970-10-01), Kuster
patent: 3534249 (1970-10-01), Neill
patent: 3541425 (1970-11-01), Weidmann
patent: 3548294 (1970-12-01), Houghton
patent: 3571608 (1971-03-01), Hurd
patent: 3588672 (1971-06-01), Willson
patent: 3668545 (1972-06-01), Von Recklinghausen
patent: 3697861 (1972-10-01), Frazier
patent: 3771021 (1973-11-01), Bierly
patent: 3819986 (1974-06-01), Fukuoka
patent: 3881150 (1975-04-01), Gay
patent: 3886410 (1975-05-01), Seer, Jr.
patent: 3916220 (1975-10-01), Roveti
patent: 4016460 (1977-04-01), Stadler
patent: 4075546 (1978-02-01), Barber
patent: 4186418 (1980-01-01), Seiler
patent: 4423431 (1983-12-01), Sasaki
patent: 4429339 (1984-01-01), Jaeschke et al.
patent: 4459537 (1984-07-01), McWhorter
patent: 4536699 (1985-08-01), Baker
patent: 4618812 (1986-10-01), Kawakami
patent: 4661879 (1987-04-01), Sato et al.
patent: 4691129 (1987-09-01), Einzinger et al.
patent: 4725912 (1988-02-01), Wrathall
patent: 4736268 (1988-04-01), Wagoner
patent: 4752852 (1988-06-01), Ahl et al.
patent: 4835649 (1989-05-01), Salerno
patent: 5006734 (1991-04-01), Engelbrecht
patent: 5015918 (1991-05-01), Copeland
patent: 5136452 (1992-08-01), Orton
patent: 5233287 (1993-08-01), Lenk
patent: 5319515 (1994-06-01), Pryor et al.
patent: 5381296 (1995-01-01), Ekelund et al.
patent: 5410441 (1995-04-01), Allman
patent: 5430401 (1995-07-01), Shtulman
patent: 5506493 (1996-04-01), Stengel
patent: 5513060 (1996-04-01), Bremond
patent: 5519557 (1996-05-01), Kopera et al.
patent: 5539603 (1996-07-01), Bingham
patent: 5539610 (1996-07-01), Williams et al.
patent: 5625519 (1997-04-01), Atkins
patent: 5642251 (1997-06-01), Lebbolo et al.
patent: 5757600 (1998-05-01), Kiraly
patent: 5814979 (1998-09-01), Grimm
patent: 5815356 (1998-09-01), Rodriguez et al.
patent: 5946270 (1999-08-01), Jang
patent: 5991134 (1999-11-01), Tan et al.
patent: 6118641 (2000-09-01), Atkins et al.
patent: 6424512 (2002-07-01), Schmacht
patent: 6456186 (2002-09-01), Oglesbee
patent: 6587027 (2003-07-01), Nadd
patent: 6611410 (2003-08-01), Makaran
patent: 6710698 (2004-03-01), Jehlicka et al.
patent: 2469031 (1981-05-01), None
Publication Order No. NIF62514/D “Self-Protected FET with Temperature and Current Limit”, Apr., 2003—Rev. 3, Semiconductor Components Industries, LLC, 6pps.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of forming a protection circuit and structure therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of forming a protection circuit and structure therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming a protection circuit and structure therefor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3324244

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.