A power-management ASIC with Q-modulation capability for efficient inductive power transmission

Mehdi Kiani, Byunghun Lee, Pyungwoo Yeon, Maysam Ghovanloo

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

    23 Scopus citations

    Abstract

    A wide variety of applications can benefit from near-field wireless power transfer using coupled inductive links, such as wireless sensors and implantable microelectronic devices. The use of inductive power transmission is expected to see an explosive growth over the next decade as engineers try to cut the last cord from mobile electronics, small home appliances, and even electric vehicles [1]. The inductive link power transfer efficiency (PTE) is highly dependent of the loading of the receiver (Rx) coil, referred to as RL. As shown in Fig. 12.7.1a, magnetic resonance-based power transmission in the form of a 3-coil link has been proposed to maximize PTE for any given RL by transforming it to an optimal load, using k34 variable [2,3]. Alternatively, an off-chip matching circuit has been used to transform RL [4]. However, these methods need either an additional coil or a network of off-chip capacitors and inductors, which add to the size/cost of Rx. Moreover, in the above applications, RL can change drastically during operation and there is a need for Rx to dynamically compensate for a wide range of RL to maintain high PTE.

    Original languageEnglish (US)
    Title of host publication2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages226-227
    Number of pages2
    ISBN (Electronic)9781479962235
    DOIs
    StatePublished - Mar 17 2015
    Event2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers - San Francisco, United States
    Duration: Feb 22 2015Feb 26 2015

    Publication series

    NameDigest of Technical Papers - IEEE International Solid-State Circuits Conference
    Volume58
    ISSN (Print)0193-6530

    Other

    Other2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
    CountryUnited States
    CitySan Francisco
    Period2/22/152/26/15

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

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