A 100nW Power Overhead Load Interface for Electrostatic Vibrational Energy Harvester with a High Biasing Voltage

Electrostatic vibrational energy harvester (e-VEH) appeals to the ever expanding applications of self powered sensors. The capacitive transduces and their conditioning circuits are extensively studied in literature, yet usually lacking a load interface that manages that energy extraction from the harvester and efficiency delivers it to a load. A load interface, as well as its controller, designed for Bennet's Doubler conditioning circuit is presented in this work. The energy extraction from the harvester is achieved through a multiple energy-shot transfer process to minimize the resistive energy loss. The load interface controller simulation shows a low power overhead of less than 100nW making it adequate for practical implementation. (C) 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.