LOAD DRIVING CIRCUIT
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United States of America Patent
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Issued Date -
Dec 17, 2015
app pub date -
May 11, 2015
filing date -
Jun 12, 2014
priority date (Note) -
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Abstract
A short circuit detection circuit has an output voltage of a switching device inputted and, when the value of the output voltage becomes lower than a specified threshold value due to an abnormal state such as a load short circuit state, outputs a control signal to a clamping circuit for making the clamping circuit carry out such a clamping operation as to limit the output current of the switching device. When the output voltage rises again by the turning-on operation of the switching device, the change in the output voltage is transmitted onto the output side through a capacitor with following rising in the control signal, by which the rising of the output signal is detected with little delay.
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