A motor drive device includes an inverter circuit, a switching circuit that switches between conduction and interruption between a power supply and the inverter circuit, and a switching driver that outputs, to the switching circuit, a command voltage which commands a switching operation. The switching circuit includes a first field-effect transistor (FET) and a second FET connected in series with sources of each other in order from a side of the power supply, and the switching driver includes an output circuit that outputs an interruption command voltage in a case in which a potential difference between drains of the FETs exceeds a threshold value, and a delay circuit that causes a timing at which the command voltage is input to a gate of the first FET to be later than a timing at which the command voltage is input to a gate of the second FET.


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    Titel :

    MOTOR DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE


    Beteiligte:

    Erscheinungsdatum :

    12.03.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    H03K PULSE TECHNIQUE , Impulstechnik / B62D MOTOR VEHICLES , Motorfahrzeuge / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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