Current sensing on a MOSFET

Details Current sensing on a MOSFET Current sensing on a MOSFET

2008-12-04

2011-11-01

Koval, Melissa (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C361S087000, C323S344000, C323S282000, C323S285000

Reexamination Certificate

active

08049523

ABSTRACT:
A device having a switch with a voltage applied across the switch. A current sensing circuit is connected to one terminal of the switch. The current sensing circuit receives power independently of the voltage applied across the switch. The power supply shares the other terminal of the switch with the current sensing circuit. The switch is adapted for opening and closing. When the switch closes, the current sensing circuit senses current through the switch and upon opening the switch the high voltage of the switch is blocked from the current sensing circuit. The sense current is caused to flow from the current sensing circuit to the other terminal when the switch is closed. The flow of the sense current produces a voltage which is compared differentially to another voltage referenced by the other terminal.

REFERENCES:
patent: 4101816 (1978-07-01), Shepter
patent: 7138786 (2006-11-01), Ishigaki et al.
patent: 7158359 (2007-01-01), Bertele et al.
patent: RE39976 (2008-01-01), Schiff et al.
patent: 7352154 (2008-04-01), Cook
patent: 7385380 (2008-06-01), Ishigaki et al.
patent: 7868599 (2011-01-01), Rahman et al.
patent: 2003/0058593 (2003-03-01), Bertele et al.
patent: 2003/0214274 (2003-11-01), Lethellier
patent: 2004/0041548 (2004-03-01), Perry
patent: 2004/0169499 (2004-09-01), Huang et al.
patent: 2004/0246226 (2004-12-01), Moon
patent: 2006/0113979 (2006-06-01), Ishigaki et al.
patent: 2007/0075711 (2007-04-01), Blanc et al.
patent: 2007/0164750 (2007-07-01), Chen et al.
patent: 2007/0205778 (2007-09-01), Fabbro et al.
patent: 2008/0024098 (2008-01-01), Hojo
patent: 2008/0088184 (2008-04-01), Tung et al.
patent: 2008/0246460 (2008-10-01), Smith
patent: 0419093 (1991-03-01), None
patent: 1503490 (2005-02-01), None
patent: 1657557 (2006-05-01), None
patent: WO02/31517 (2002-04-01), None

Affiliated with

Also associated with

Rating

Current sensing on a MOSFET does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Current sensing on a MOSFET, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current sensing on a MOSFET will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4290345