Power module
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United States of America Patent
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Sep 8, 2020
Grant Date -
Feb 15, 2018
app pub date -
Apr 6, 2016
filing date -
Apr 6, 2016
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Abstract
When a short-circuit failure has occurred in a power semiconductor device provided in a power module, a radical and rapid temperature increase is prevented by instantly interrupting a short-circuit current. A power module 10 has a package 10a. Provided in the package 10a are: a MOSFET 21 serving as the power semiconductor device; a resistor 23 serving as a detecting means for detecting an operation state of the MOSFET 21 and outputting a detection signal; and a MOSFET 22 serving as a current-interrupting purpose switch connected in series to the MOSFET 21. In response to a control signal Si2 generated on the basis of the detection signal, the MOSFET 22 goes into a conduction state during a normal operation of the MOSFET 21 and goes into an interruption state so as to interrupt a current flowing in the MOSFET 21 when a short-circuit failure has occurred in the MOSFET 21.
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