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Design of an inductor-less step-up ac/dc converter for 0.3 V1 MHz vibration energy harvesting
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| Veröffentlicht in: | Energy reports year:2020; month:02; 6(2020), 2 vom: Feb., Seite 159-165; volume:6; number:2; pages:159-165 |
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| Personen und Körperschaften: | , , , |
| Titel: | Design of an inductor-less step-up ac/dc converter for 0.3 V1 MHz vibration energy harvesting/ Kei Eguchi, Akira Shibata, Kyoka Kuwahara, Takaaki Ishibashi |
| Format: | E-Book-Kapitel |
| Sprache: | Englisch |
| veröffentlicht: |
2020
|
| Gesamtaufnahme: |
: Energy reports, 6(2020), 2 vom: Feb., Seite 159-165
, volume:6 |
| Schlagwörter: | |
| Quelle: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
| Zusammenfassung: | For vibration energy harvesting, we propose an inductor-less step-up ac/dc converter in this paper. To realize the inductor-less design, the proposed ac/dc converter consists of two converter blocks: Cockcroft-Walton circuit and charge pump. Unlike existing ac/dc converters for vibration energy harvesting, the proposed ac/dc converter can achieve less electro-magnetic interference (EMI), because no magnetic component is necessary. Furthermore, owing to the Cockcroft-Walton circuit, a full-bridge circuit is not necessary to convert vibration energy. Therefore, small vibration energy, namely, as 0.3 V1 MHz, can be converted directly to dc voltage. Through theoretical analysis and simulation program with integrated circuit emphasis (SPICE) simulation, the performance of the proposed converter with 6× voltage gain is investigated, where the proposed converter is designed by assuming 0.18μm CMOS process. The proposed converter demonstrates that about 62% power efficiency can be provided, where the output power is 30 μW, the output voltage is about 1.6 V, and the ripple factor is 0.8%. Furthermore, the feasibility of the proposed ac/dc converter is confirmed by breadboard experiments. The inductor-less design provides us to integrate the proposed ac/dc converter into a hybrid IC chip. |
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| ISSN: |
2352-4847
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| DOI: | 10.1016/j.egyr.2019.11.057 |
| Zugang: | Open Access |