An off-chip input capacitor-less boost converter with fast MPPT for energy harvesting

IEICE Electronics Express

Jinseong Jeong¹  Sangkwon Lee¹ 

[1] School of Electrical and Computer Engineering, University of Seoul

关键词: energy harvesting;    MPPT;    boost converter;    inductor current conservation;    dual-boundary control;   

DOI  :  10.1587/elex.11.20140385

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(7)In this paper, a boost converter with fast MPPT capability is proposed for energy harvesting applications. The sampling time for maximum power point voltage, VMPP of harvester device is extremely shortened by using inductor current conservation method and an off-chip input capacitor-less boost converter. The proposed boost converter is designed in a standard 0.13 µm CMOS process and compared with a conventional MPPT boost converter. The proposed architecture can sample VMPP more than 100 times faster than the conventional architecture. Power conversion efficiency of the harvesting system also improves due to the fast VMPP sampling. For the scenario used in this paper, the overall efficiency improves from 70% to 85%. This architecture can be applied to any energy harvesting systems and is especially effective when the ambient parameter such as temperature or light intensity changes relatively rapidly.

【 授权许可】

Unknown