Design of an inductor-less step-up ac/dc converter for 0.3 V1 MHz vibration energy harvesting

Artikel

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 V@1 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.

Angaben zum Objekt

• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Journal: Energy Reports ; ISSN: 2352-4847 ; Volume: 6 ; Year: 2020 ; Issue: 2 ; Pages: 159-165 ; Amsterdam: Elsevier

Klassifikation und Themen

• Klassifikation: Wirtschaft
• Thema: ac/dc converters ; Charge pump ; CMOS circuits ; Cockcroft-Walton circuit ; Inductor-less converters ; Vibration energy harvesting

Beteiligte, Orts- und Zeitangaben

• Ereignis: Geistige Schöpfung
• (wer): Eguchi, Kei ; Shibata, Akira ; Kuwahara, Kyoka ; Ishibashi, Takaaki
• Ereignis: Veröffentlichung
• (wer): Elsevier
• (wo): Amsterdam
• (wann): 2020

Weitere Informationen

• DOI: doi:10.1016/j.egyr.2019.11.057
• Handle: http://hdl.handle.net/10419/243873
• Letzte Aktualisierung: 10.03.2025, 11:44 MEZ