Semiconductor apparatus and power conversion apparatus
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United States of America Patent
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Jan 23, 2018
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N/A
app pub date -
May 27, 2015
filing date -
Jul 14, 2014
priority date (Note) -
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Abstract
There is provided a semiconductor apparatus comprising: a switching element including a main element and a sense element; a main diode whose cathode is connected to a first main electrode of the main element and whose anode is connected to a second main electrode of the main element; a sense diode whose cathode is connected to a first main electrode of the sense element and whose anode is connected to a second main electrode of the sense element; and a deterioration detection circuit configured to apply a voltage to a sense node, and detects a deterioration of the switching element or the main diode based on a forward current flowing in the sense diode, being detected while the voltage is applied, the voltage being applied during an OFF period of switching element, wherein the sense diode is disposed for detecting current flowing through the main diode.
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