Driver for semiconductor switch element
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United States of America Patent
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-
Aug 19, 2014
Grant Date -
Oct 17, 2013
app pub date -
Jan 12, 2012
filing date -
Jan 14, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A driver includes a converter section 2 which includes a switching element Q1 and which is configured to output a desired DC voltage by switching the switching element Q1, a control section 1 configured to control the switching operation of the switching element Q1, capacitors C1A, C1B charged by the output of the converter section 2, turn-on circuits 31A, 31B configured to supply gates of a bidirectional switch element 4 using electric charges stored in the capacitors CIA, C1B with drive powers to turn-on the bidirectional switch element 4, and turn-off circuits 32A, 32B configured to discharge the capacitors CIA, C1B to turn-off the bidirectional switch element 4 in response to the halt of the switching operation of the switching element Q1 by the control section 1.
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