Semiconductor device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 11, 2024
Grant Date -
Jul 7, 2022
app pub date -
Mar 25, 2022
filing date -
Mar 31, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
Upon an input of an input signal that instructs to turn on a power semiconductor element, a pulse generation circuit generates a pulse. Upon reception of the pulse, a gated latch circuit holds an overcurrent detection state of an overcurrent detection circuit. In response to the input of the input signal and an overcurrent situation having been detected, an overcurrent mode switching circuit outputs an inverted or non-inverted oscillation signal, which is obtained by inverting or not inverting an oscillation signal generated by an oscillation signal generation circuit depending on the overcurrent situation being detected before or after the input of the input signal, and also outputs an inverted oscillation signal obtained by inverting the oscillation signal. A timing determination circuit periodically turns on the power semiconductor element based on the inverted oscillation signal and frequency divided signals obtained by frequency dividing the inverted or non-inverted oscillation signal.
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