A Single-Inductor Dual-Input Dual-Output DC-DC Converter for Photovoltaic and Piezoelectric Energy Harvesting Systems

I. Chou Chen, Che Wei Liang, Tsung Heng Tsai*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

A single-inductor dual-input dual-output (SI-DIDO) dc-dc converter for photovoltaic and piezoelectric energy harvesting systems is proposed. The SI-DIDO dc-dc converter uses buck-boost topology. A new algorithm is proposed to share the single inductor between all the inputs and outputs in one switch cycle. Light-load or heavy-load mode is determined by current-mode pulse width modulation (PWM) control. Moreover, a delay lock loop (DLL)-based zero-current detector (ZCD) is proposed to lock the pre-opening time of the comparator. Measurement results show that the peak efficiency of the proposed SI-DIDO buck-boost dc-dc converter is 88.1%.

Original languageEnglish
Article number8733894
Pages (from-to)1763-1767
Number of pages5
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Volume66
Issue number10
DOIs
StatePublished - Oct 2019

Keywords

  • DC-DC converter
  • delay lock loop (DLL)
  • energy harvesting
  • maximum power point tracking (MPPT)
  • zero current detector (ZCD)

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