In this paper, different methods of dimming white high brightness LEDs with miscellaneous LED current waveforms are investigated to determine their influence on LED color-stability. A boost converter with integrated LED dimming feature has been built for an automotive daytime running light system. In comparison to the conventional approach, the proposed solution achieves cost reduction by saving the external switches and drivers without generating additional color deviations. Experimental results of the prototype converter show only small color shifts for typical white LEDs. Performance and design issues of the converter are presented. Finally the color stability of the complete prototype during dimmed operation is shown.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    LED-driver with integrated dimming feature and its influence on chromaticity values


    Beteiligte:
    Thomas, Werner (Autor:in) / Pforr, Johannes (Autor:in)


    Erscheinungsdatum :

    2009


    Format / Umfang :

    6 Seiten, 12 Bilder, 1 Tabelle, 9 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch




    Illumination Chromaticity Estimation Using Inverse-Intensity Chromaticity Space

    Tan, R. / Nishino, K. / Ikeuchi, K. et al. | British Library Conference Proceedings | 2003



    Vehicle lighting system with gradual dimming feature

    SALTER STUART C / DELLOCK PAUL KENNETH / BUTTOLO PIETRO | Europäisches Patentamt | 2018

    Freier Zugriff

    DIMMING SYSTEM, DIMMING METHOD, AND DIMMING GLASS

    HU DAHAI / MENG CHEN / SUN WEI et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    DIMMING SHEET AND DIMMING WINDOW

    YOSHIDA TETSUSHI | Europäisches Patentamt | 2019

    Freier Zugriff