Solid-state disconnect device

Details Solid-state disconnect device Solid-state disconnect device

2011-08-23

2011-08-23

Patel, Dharti (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Impedance insertion

C361S093100, C361S093900

Reexamination Certificate

active

08004806

ABSTRACT:
A solid-state disconnect device capable of isolating and protecting circuits and equipment from overloads and undesired transients is presented. The protection device includes at least one depletion mode circuit block having three terminals (drain, gate, and source), which in its simplest form is implemented by a single n-channel depletion mode field-effect transistor, and two enhancement mode circuit blocks each having three terminals (drain, gate and source), each implemented in simplest form by a single n-channel enhancement mode field-effect transistor. The current conducting path of the first enhancement mode circuit block is connected in series with the current conducting path of the depletion mode circuit block. The drain terminal of the second enhancement mode circuit block is connected through a current limiting load to both the gate terminal of the second enhancement mode circuit block and the drain terminal of the first enhancement mode circuit block. The gate terminal of the first enhancement mode circuit block is connected to the drain terminal of the second enhancement mode circuit block. The source terminals of the two enhancement circuit blocks are both connected to the gate terminal of the depletion mode circuit block. Unidirectional and bidirectional embodiments are disclosed.

REFERENCES:
patent: 4245184 (1981-01-01), Billings et al.
patent: 5606482 (1997-02-01), Witmer
patent: 5742463 (1998-04-01), Harris
patent: 6104106 (2000-08-01), Partridge
patent: 6515840 (2003-02-01), Covi et al.
patent: 6954347 (2005-10-01), Chaudhry
patent: 6970337 (2005-11-01), Strahm
patent: 7139157 (2006-11-01), Taylor
patent: 7262946 (2007-08-01), Harris et al.
patent: 7324315 (2008-01-01), Harris
patent: 7342433 (2008-03-01), Harris et al.
patent: 7369387 (2008-05-01), Harris et al.
patent: WO2006/053238 (2006-05-01), None
S. H. Ryu, S. Krishnaswami, B. Hull, J. Richmond, A. Agarwal, and A. Hefner, “10kV, 5A 4H-SiC Power DMOSFET,” in Proc. ISPSD, Jun. 2006, pp. 1-4.
Yuzhu Li, Petre Alexandrov, Jianhui Zhang, Larry X. Li, and Jian H. Zhao, “10kV, 87mOHMS-cm2 Normally-off 4H-SiC Vertical Junction Field-Effect Transistors,” Materials Science Forum vols. 527-529, 2006, pp. 1187-1190.

Affiliated with

Also associated with

Rating

Solid-state disconnect device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Solid-state disconnect device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solid-state disconnect device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2762092