A Scalable N-Step Equally Split SSHI Rectifier for Piezoelectric Energy Harvesti

Abstract

In piezoelectric energy harvesting, the large inher- ent capacitor ( CP) of a piezoelectric transducer (PT) results in significant charge loss and low-power extraction. To improve the power extraction, various interface circuits using a flip process have been proposed, such as synchronized switch harvesting on inductor (SSHI) rectifier and synchronized switch harvesting on capacitor (SSHC) rectifier. The flip process reduces the influence of large CP and the charge loss by using external element