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Analysis of a Multi-Ratio Switched Capacitor DC-DC Converter for a Supercapacitor Power Supply

  • Hugo SerraEmail author
  • Ricardo Madeira
  • Nuno Paulino
Conference paper
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT, volume 450)

Abstract

An energy harvesting system can use a supercapacitor in order to store energy; however, a voltage regulator is required to obtain a constant output voltage as the supercapacitor discharges. A Switched-Capacitor DC-DC converter allows for complete integration in CMOS technology, but requires several topologies in order to obtain a high efficiency. This paper presents the complete analysis of these topologies in order to determine expressions that allow to design and determine the optimum input voltage ranges for each topology. These expressions are verified using electrical simulations.

Keywords

DC-DC power converters Switched capacitor circuits Supercapacitors Performance analyses Design optimization Efficiency 

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Copyright information

© IFIP International Federation for Information Processing 2015

Authors and Affiliations

  1. 1.Centre for Technologies and Systems (CTS) – UNINOVA, Department of Electrical Engineering (DEE)Universidade Nova de Lisboa (UNL)CaparicaPortugal

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