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Highly Efficient Power Management in Wearables and IoT Devices

  • Juergen WittmannEmail author
  • Francesco Cannillo
  • Dan Ciomaga
  • Mihail Jefremow
  • Fabio Rigoni
Chapter

Abstract

Wearables and IoT devices cover a large design space for power management. Sensor applications require a very efficient standby mode to allow an operation over several years with one battery, while battery charging or data processing utilizes voltage converters providing tens of Watts with negligible power losses. This work presents design techniques to address a large range of the IoT power management design space. Architecture and circuit design techniques in power management ICs, including an analog core supply concept, linear regulators, and reference generators, are proposed, which allow an IoT device to consume a standby current in the sub-microampere region. A switched-capacitor converter and a 3-level buck converter are presented, which are especially suitable for input voltages up to 10 V and output currents as high as 10 A, achieving up to 98% peak efficiency.

Keywords

IoT Power management Efficiency Multi-level buck converter Switched-capacitor converter 

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Juergen Wittmann
    • 1
    Email author
  • Francesco Cannillo
    • 1
  • Dan Ciomaga
    • 1
  • Mihail Jefremow
    • 1
  • Fabio Rigoni
    • 1
  1. 1.Dialog SemiconductorGermeringGermany

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