Abstract
This article presents a multi-input single-inductor multi-output energy-harvesting interface that extracts power from three independent sources and regulates three output voltages. The converter employs the proposed double-conversion rejection technique to reduce the double-converted power by up to 81.8% under the light-load condition and operates in various power conversion modes, including the proposed buck-based dual-conversion mode, to improve the power conversion efficiency and maximum load power. The proposed adaptive peak inductor current controller determines the inductor charging period, and the proposed digitally controlled zero-current detector detects the optimum zero-current point according to the operating mode. The proposed converter achieves a peak end-to-end efficiency of 90.2% and a maximum output power of 24 mW, indicating the improvements of approximately 7.52% and 1.85 times, respectively, compared with those of conventional buck-boost converters.
Original language | English |
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Article number | 9212601 |
Pages (from-to) | 961-971 |
Number of pages | 11 |
Journal | IEEE Journal of Solid-State Circuits |
Volume | 56 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2021 Mar |
Keywords
- Buck-based dual-conversion (BBDC)
- Internet of Things
- dc-dc converter
- double-conversion rejection technique (DCRT)
- energy harvesting (EH)
- multiple inputs
- multiple outputs
ASJC Scopus subject areas
- Electrical and Electronic Engineering