An energy-recycling three-switch single-inductor dual-input buck/boost DC-DC converter with 93% peak conversion efficiency and 0.5mm2 active area for light energy harvesting

Hsuan Ju Chen, Yi Hsiang Wang, Peng Chang Huang, Tai Haur Kuo

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

21 Citations (Scopus)

Abstract

Energy harvesting (EH) can be used in wireless sensor networks (WSNs) since the sensors can be powered by ambient energy in conjunction with rechargeable batteries to achieve near-perpetual operation [1-4]. One common solution is to harvest energy from ambient light through photovoltaic (PV) modules. In such a system, a battery supplements energy when the power provided by the environment is insufficient or when the WSN is active, and stores surplus energy for future use when the WSN is inactive. Accordingly, power management in an EH system involves a balance among the PV module, battery and load. Previous work [1] has implemented an EH system for moving vehicles and portable devices, but it is not suitable for indoor light energy harvesting. Although a single-inductor multi-input multi-output (SIMIMO) topology is one solution, the efficiencies of existing implementations [2-4] are degraded by additional conduction and switching losses due to the inductor-sharing switches in series with the inductor. In response, this paper proposes an energy-recycling strategy and implements the corresponding power converter with fewer switches.

Original languageEnglish
Title of host publication2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages374-375
Number of pages2
ISBN (Electronic)9781479962235
DOIs
Publication statusPublished - 2015 Mar 17
Event2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers - San Francisco, United States
Duration: 2015 Feb 222015 Feb 26

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
Country/TerritoryUnited States
CitySan Francisco
Period15-02-2215-02-26

All Science Journal Classification (ASJC) codes

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

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