| 摘要 |
In a level-shift circuit of the high-side section of an HVIC, a switching-on level-shift resistance member includes two resistors, and a switching-off level-shift resistance member includes two resistors. A logic filter set fetches potentials of the both end of the resistor as signals Aon and Bon, and fetches potentials of the both end of the resistor as signals Aoff and Boff. When an output period of the signals Bon and Boff is longer than that of the signals Aon and Aoff, the logic filter set does not output an abnormal signal by judging that a recoverry signal is detected.
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