TinyPower – Power conversion on a tiny scale

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    The world surrounding us is filled with devices relying on electrical power and the rise of internet-of-thingswill mean that powering devices will remain important in the future. The size and cost of the power supplyhas become a dominant factor in many applications. At the same time, most of the power supplies havelarge electrolytic capacitators, which are expensive, bulky and often limit the product lifetime. Theambition of the TinyPower project is to develop an integrated switch-mode power supply consisting of anintegrated circuit (IC) where only a few external components need to be added to achieve a completeproduct.One of the key external components is an inductor. This inductor must operate at the switch frequency ofthe IC, be able to carry the current needed, be small and not have stray magnetic fields causing problems innearby circuitry. The switch frequency of the IC will be in the ultra-high frequency, UHF range (300 MHz to1 GHz) which means that skin effects, Eddy current and nonlinear behavior of magnetic materials are highlyimportant1. At least two different inductor structures will be realized and tested, one with a magnetic coreand one with a non-magnetic core.A separate effort is placed on assembling the integrated circuits and passive components. This will mostlikely be based on a interposer, a miniature circuit board which must account for not only the electricalsignals but also the magnetic fields, so as not too reduce conversion efficiency too much.The Tinypower project is an ambitious approach to taking miniature power converters into a new domainand the trickle-down effect on micro fabricated inductors can hopefully benefit other projects.
    Original languageEnglish
    Title of host publicationAbstract Book - DTU Sustain Conference 2014
    Number of pages1
    Place of PublicationKgs. Lyngby
    PublisherTechnical University of Denmark
    Publication date2014
    Publication statusPublished - 2014
    EventDTU Sustain Conference 2014 - Technical University of Denmark, Lyngby, Denmark
    Duration: 17 Dec 201417 Dec 2014


    ConferenceDTU Sustain Conference 2014
    LocationTechnical University of Denmark
    Internet address


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