An array-type light-emitting device 212 includes multiple pixel circuits PIX electrically coupled in parallel and spatially arranged in a matrix. A power supply circuit 220 supplies electric power to the array-type light-emitting device 212. A DC/DC converter 224 has an output coupled to a power supply terminal of the array-type light-emitting device 212 via a power supply line. A power supply control circuit 225 sets a target value VCNT(REF) that corresponds to a light distribution pattern, and controls the DC/DC converter 224 such that the control target voltage VCNT approaches the target value VCNT(REF).


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    Title :

    VEHICULAR LAMP SYSTEM, POWER SUPPLY CIRCUIT


    Additional title:

    FAHRZEUGLAMPENSYSTEM, STROMVERSORGUNGSSCHALTUNG
    SYSTÈME DE LAMPE DE VÉHICULE, CIRCUIT D'ALIMENTATION ÉLECTRIQUE


    Contributors:
    OTA YU (author) / KATO MASASHI (author) / YANAGIZU SHOHEI (author) / KIKUCHI SATOSHI (author)

    Publication date :

    2025-02-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H05B ELECTRIC HEATING , Elektrische Heizung / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein



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