Overheat detection circuit and power supply apparatus
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United States of America Patent
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May 15, 2018
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N/A
app pub date -
Feb 2, 2016
filing date -
Feb 3, 2015
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Abstract
Provided is an overheat detection circuit having a small circuit scale, low cost, and low electric power consumption. The overheat detection circuit implemented in a CMOS semiconductor device includes: a reference voltage circuit connected between a base and an emitter of a parasitic bipolar transistor; and a current detection circuit connected to the emitter of the parasitic bipolar transistor, in which the current detection circuit is configured to detect a flow of a current through the parasitic bipolar transistor to output an overheat detection signal.
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