Gate control circuit for prevention of turn-off avalanche of...

Details Gate control circuit for prevention of turn-off avalanche of... Gate control circuit for prevention of turn-off avalanche of...

2007-06-26

2007-06-26

Jackson, Stephen W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

C361S093900

Reexamination Certificate

active

10364956

ABSTRACT:
A switch in an inductive circuit is prevented from avalanche operation when the switch is turned off. By preventing avalanche, the associated EMI is reduced or eliminated. Switch avalanche can be prevented using an active component, such as a transistor, or a passive component, such as a resistor, coupled to the switch gate to control current in the switch gate. By controlling current in the switch gate during turn-off, avalanche operation can be prevented without a significant increase in turn-off energy.

REFERENCES:
patent: 4721869 (1988-01-01), Okado
patent: 5200879 (1993-04-01), Sasagawa et al.
patent: 5321313 (1994-06-01), Oberhauser
patent: 6160691 (2000-12-01), Shen et al.
patent: 6208185 (2001-03-01), John et al.
patent: 6556407 (2003-04-01), Brando et al.
patent: 6717785 (2004-04-01), Fukuda et al.

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