High efficiency multi-channel LED driver based on SIMO switch-mode converter

Luchen Yu, Yuan Zhu, Minjie Chen, T. Yoshihara

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

    4 Citations (Scopus)

    Abstract

    This paper presents a new method to drive multiple LED strings efficiently. The proposed driver is based on single-inductor multiple-output (SIMO) switch-mode converters. Because the proposed driver gets rid of linear current regulators and maintains desired constant current of each string directly, it maximizes the overall efficiency and handles mismatching problems of the conventional driver. The simulation results show excellent performance on four-string LED with four 1W LEDs in each string including individual dimming. The measured efficiency was improved at least by 15% compared with the conventional driver of linear current regulators.

    Original languageEnglish
    Title of host publicationISOCC 2012 - 2012 International SoC Design Conference
    Pages483-486
    Number of pages4
    DOIs
    Publication statusPublished - 2012
    Event2012 International SoC Design Conference, ISOCC 2012 - Jeju Island
    Duration: 2012 Nov 4 → 2012 Nov 7

    Other

    Other2012 International SoC Design Conference, ISOCC 2012
    CityJeju Island
    Period12/11/4 → 12/11/7

    Keywords

    • high efficiency
    • individual dimming
    • LED driver
    • SIMO swicth-mode converter

    ASJC Scopus subject areas

    • Hardware and Architecture
    • Electrical and Electronic Engineering

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