Dynamically Reconfigurable Gearbox Switched-Capacitor DC-DC Converter

Dennis Øland Larsen, Martin Vinter, Ivan Harald Holger Jørgensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

A dual output battery-connected reconfigurable switched capacitor dc-dc converter (SCC) is presented. The design improves the overall power efficiency of the system by reconfiguring the SCC output stage based on the output load scenario. The number of capacitors to use in an SCC is a tradeoff between area and efficiency. Having more capacitors improves efficiency but increases the implementation area and cost. The proposed combined dynamically reconfigurable output stage changes the number of capacitors used for each output depending on the load. The implemented converter is compared with a solution where an SCC is implemented separately for each of the outputs. Transistor level simulations of the proposed and prior art output stages show an overall improved efficiency.
Original languageEnglish
Title of host publicationProceedings of 2018 IEEE Nordic Circuits and Systems Conference (NORCAS)
Number of pages5
PublisherIEEE
Publication date2018
Pages1-5
ISBN (Print)9781538676561
DOIs
Publication statusPublished - 2018
Event2018 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC) - Tallink Spa & Conference Hotel, Tallinn, Estonia
Duration: 30 Oct 201831 Oct 2018

Conference

Conference2018 IEEE Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC)
LocationTallink Spa & Conference Hotel
CountryEstonia
CityTallinn
Period30/10/201831/10/2018

Keywords

  • Capacitors
  • Topology
  • Switches
  • Batteries
  • Capacitance
  • MOS devices
  • Clocks

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