Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1997-10-17
1999-03-23
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 18, 327 20, 327427, 327434, 327436, 327437, 327525, 315129, 315130, 324503, 340641, 340642, 340458, H03K 5153
Patent
active
058865438
ABSTRACT:
A power semiconductor device (2) has a first main electrode (S) for coupling to a first supply line (3), a second main electrode (D) coupled to a first terminal (4) for connection via a load (L) to a second voltage supply line (5) and an insulated gate electrode (G) coupled to a control terminal (GT) for supplying a gate control signal to enable conduction of the power semiconductor device (2). An open-circuit detection arrangement is integrated with the power semiconductor device (2) for providing an indication that a load (L) coupled to the power semiconductor device (2) is open-circuited. The detection arrangement has a reference current (Ir) providing arrangement (7, R3, R4, R7, Q1, Q2) and a current deriving arrangement (Q3, Q4) for deriving a current (Id) dependent on the voltage at the second main electrode (D). The detection arrangement provides an output signal (OS) to indicate that the load (L) is operating normally when the derived or detected current (Id) is greater than the reference current (Ir). This should allow accurate determination of the status of the load (L) because the use of the reference current (Ir) allows account to be taken of possible leakage current paths around the load (L) so that an indication that the load (L) is operating correctly and is not open-circuit is only given when the derived current (Id) is greater than the reference current (Ir).
REFERENCES:
patent: 3660813 (1972-05-01), Rumpf
patent: 4234878 (1980-11-01), Stark
patent: 4236143 (1980-11-01), Mizuno
patent: 4349810 (1982-09-01), Kugo et al.
patent: 4745339 (1988-05-01), Izawa et al.
patent: 5164659 (1992-11-01), Schultz et al.
patent: 5266840 (1993-11-01), Leipold et al.
patent: 5446397 (1995-08-01), Yotsuyanagi
Biren Steven R.
U.S. Philips Corporation
Wells Kenneth B.
LandOfFree
Power semiconductor switch having a load open-circuit detection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power semiconductor switch having a load open-circuit detection , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power semiconductor switch having a load open-circuit detection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2130078