A controller is provided in an in-vehicle electronic control unit (ECU) for controlling a backup power source to maintain continuous power supply to a memory in a standby state of ACC-OFF using a battery of a vehicle. The controller reduces dark current in the standby state by reducing an output voltage of the backup power source of the ECU depending on a state of the battery of the vehicle. The controller may be provided to not only the single ECU but also other ECUs in the vehicle, thereby reducing the dark current in the whole of the vehicle.


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    Title :

    Vehicular power source system


    Contributors:

    Publication date :

    2016-01-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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