An Ambient Energy Harvesting Interface for Battery-Free Wireless Sensor Nodes

Chi Wei Liu*, Cong Sheng Huang, Wen Po Lo, Po Hung Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a low-quiescent-power battery-free energy harvesting interface for micro-watt to milli-watt applications with a single-inductor dual-input dual-output (SIDIDO) buck-boost converter. The system contains one renewable source input, one regulated output and one bidirectional energy transfer node with a storage capacitor for storage and reuse the energy. To achieve high power conversion efficiency (PCE) with micro-watt input power, we embedded dynamic-power-gating under-voltage lockout (DPG-UVLO) circuit, dynamic-voltage-feedback (DVFB) and pulse-frequency modulation (PFM) control to reduce quiescent power. The measurement quiescent power is 1.9 μW and the peak PCE is 86.4%.

Original languageEnglish
Title of host publicationProceedings of 2024 IEEE Wireless Power Technology Conference and Expo, WPTCE 2024
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages459-462
Number of pages4
ISBN (Electronic)9798350349139
DOIs
StatePublished - 2024
Event2024 IEEE Wireless Power Technology Conference and Expo, WPTCE 2024 - Kyoto, Japan
Duration: 8 May 202411 May 2024

Publication series

NameProceedings of 2024 IEEE Wireless Power Technology Conference and Expo, WPTCE 2024

Conference

Conference2024 IEEE Wireless Power Technology Conference and Expo, WPTCE 2024
Country/TerritoryJapan
CityKyoto
Period8/05/2411/05/24

Keywords

  • Energy harvesting
  • battery-free system
  • multi-input multi-output converter
  • power management

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