An ultra-low-voltage self-powered energy harvesting rectifier with digital switch control

IEICE Electronics Express

Zhangming Zhu¹  Yani Li¹  Chaolin Zhang¹  Yintang Yang¹ 

[1] School of Microelectronics, Xidian University

关键词: energy harvesting;    rectifier;    ultra-low-voltage;    self-powered;    digital switch control;   

DOI  :  10.1587/elex.12.20140921

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(8)This paper presents an ultra-low-voltage high-efficiency interface circuit for energy harvesting, which features self-powered design and digital switch control. The proposed rectifier includes bridge rectifier and active diode. The former introduces self-driven switches and ultra-low voltage divider to reduce the voltage drop for wide output voltage swing. The latter adopts a common-gate comparator as switch control block to output a nearly digital signal, thereby improving dynamic response and anti-noise ability. The entire circuit exhibits good conversion efficiency and stability. Its minimum input voltage is down to 225 mV. The maximum voltage efficiency reaches to 96.3%, supplying the output current of 29 µA and the output power of 15.43 µW. The maximum power efficiency is 96.5%, providing the output current of over 16.1 µA and the output power of 5.19 µW. The whole circuit consumes the power loss of 1.42 µW.

【 授权许可】

Unknown