Drive circuit of voltage driven element

Details Drive circuit of voltage driven element Drive circuit of voltage driven element

2011-06-07

2011-06-07

Fureman, Jared J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

C361S093100, C327S480000

Reexamination Certificate

active

07957115

ABSTRACT:
A protection circuit is installed between a gate terminal (a control terminal) and an emitter terminal (a ground terminal) of a voltage driven element generally called a power device. The protection circuit is structured as a duplex protection system in which a first discharge circuit is configured to perform a discharge from the control terminal at a current value set in accordance with a current flowing between the load terminal and the ground terminal, an overcurrent generation detection device is configured to detect an existence of an overcurrent between the load terminal and the ground terminal, and a second discharge circuit is configured to perform the discharge from the control terminal at a predetermined constant current value after the overcurrent is detected.

REFERENCES:
patent: 5091664 (1992-02-01), Furuhata
patent: 5396117 (1995-03-01), Housen et al.
patent: 6717785 (2004-04-01), Fukuda et al.
patent: 6891707 (2005-05-01), Hiyama et al.
patent: 7242238 (2007-07-01), Higashi
patent: 7514967 (2009-04-01), Higashi et al.
patent: 7737737 (2010-06-01), Higashi et al.
patent: 2002-353795 (2002-12-01), None

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