Circuit for driving a semiconductor element

Details Circuit for driving a semiconductor element Circuit for driving a semiconductor element

2007-03-22

2009-08-25

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C326S083000

Reexamination Certificate

active

07579880

ABSTRACT:
A drive circuit is provided for driving a voltage-driven semiconductor element by producing a drive signal depending upon an input signal. The drive circuit comprises an output stage and a current-suppressing circuit. The output stage includes two semiconductor elements connected in series. The voltage-driven semiconductor element is connected to a common connection point of the two semiconductor elements. The current-suppressing circuit controls one of the two semiconductor elements to provide an output current flowing through either one of the two semiconductor elements if a voltage applied to the voltage-driven semiconductor element reaches a limit level, which is in excess of a level for conducting the voltage-driven semiconductor element by a predetermined voltage.

REFERENCES:
patent: 5552746 (1996-09-01), Danstrom
patent: 6724227 (2004-04-01), Imai
patent: 6788128 (2004-09-01), Tsuchida
patent: 7038500 (2006-05-01), do Nascimento
patent: 2005/0231177 (2005-10-01), Tateno et al.
patent: A-07-111446 (1995-04-01), None

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