High efficiency autonomous controlled cascaded LDOs for green battery system

Leona Okamura, Fukashi Morishita, Kazutami Arimoto, Tsutomu Yoshihara

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    Low DropOut Converter (LDO) is commonly employed as voltage down converter (VDC) because of its high compatibility with System on Chips (SoCs), but in general, LDO is not so high power efficient. This paper presents an Autonomous Controlled Cascaded LDOs power system which achieves about doubled power efficiency of the conventional LDO systems. In proposed architecture, existing logic circuitries are divided into two load group, and electrical charges are shared among the blocks and a tank circuit. We confirmed that our architecture makes effective use of 88.9% of the battery energy by simulation which is comparable to that of switching regulators whereas ours is easier to implement in SoCs.

    Original languageEnglish
    Title of host publicationASICON 2009 - Proceedings 2009 8th IEEE International Conference on ASIC
    Pages336-339
    Number of pages4
    DOIs
    Publication statusPublished - 2009
    Event2009 8th IEEE International Conference on ASIC, ASICON 2009 - Changsha
    Duration: 2009 Oct 202009 Oct 23

    Other

    Other2009 8th IEEE International Conference on ASIC, ASICON 2009
    CityChangsha
    Period09/10/2009/10/23

    Keywords

    • Charge recycle
    • Energy saving
    • Green battery
    • LDO

    ASJC Scopus subject areas

    • Hardware and Architecture
    • Electrical and Electronic Engineering

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