A fully integrated self-oscillating switched-capacitor DC-DC converter for near-threshold loads

Matthew J. Turnquist, Markus Hiienkari, Jani Mäkipää, Lauri Koskinen

    Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

    1 Citation (Scopus)


    We introduce a fully integrated step-down self-oscillating switched-capacitor DC-DC converter that delivers near-threshold (NT) output voltages. The converter is built in 28 nm UTBB FD-SOI and occupies 0.0104 mm2. Back-gate biasing is utilized to increase the load power range. Measurements show a peak efficiency of 87%, self start-up capability, and a minimum efficiency of 75% for 79 nW to 200 μW (ideal) loads. Measurements with an off-chip NT processor load also show high efficiency. The converter's large load power range and high efficiency are a good fit for energy-constrained NT processors.

    Original languageEnglish
    Title of host publication2015 IEEE Asian Solid-State Circuits Conference, A-SSCC 2015 - Proceedings
    Number of pages4
    ISBN (Electronic)978-1-4673-7191-9
    Publication statusPublished - 19 Jan 2016
    MoE publication typeA4 Article in a conference publication
    EventIEEE Asian Solid-State Circuits Conference - Xiamen, Fujian, China
    Duration: 9 Nov 201511 Nov 2015
    Conference number: 11


    ConferenceIEEE Asian Solid-State Circuits Conference
    Abbreviated titleA-SSCC
    CityXiamen, Fujian

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