Circuit for preventing excessive power dissipation in power swit

Details Circuit for preventing excessive power dissipation in power swit Circuit for preventing excessive power dissipation in power swit

1983-05-31

1985-10-15

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

323289, H02H 320

Patent

active

045478287

ABSTRACT:
A circuit for preventing excessive power dissipation and for avoiding latch-up, in power switching semiconductor devices, monitors the forward conduction drop of the switching semiconductor device and removes the control electrode drive signal provided thereto, if the drive signal is insufficient for supporting the load current flowing through the driven device. The voltage across the controlled-conduction portion of the switching device is monitored and compared to a reference voltage, which may be also related to the load current, to remove switching device drive if the controlled-conduction portion voltage exceeds the reference comparison voltage.

REFERENCES:
patent: 4115828 (1978-09-01), Rowe et al.
patent: 4146903 (1979-03-01), Dobkin
patent: 4363068 (1982-12-01), Burns
patent: 4421993 (1983-12-01), Bloomer
patent: 4429339 (1984-01-01), Jaeschke et al.
patent: 4447764 (1984-08-01), Kornrumpf et al.

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