An Efficient Piezoelectric Energy Harvesting Interface Circuit Using a Bias-Flip Rectifier and Shared Inductor

By Yogesh K. Ramadass, Anantha P. Chandrakasan. IEEE Journal of Solid-State Circuits, 2009

373 citations recorded by the source corpus.

Harvesting ambient vibration energy through piezoelectric means is a popular energy harvesting technique which can potentially supply 10-100's of ¿W of available power. One of the main limitations of existing piezoelectric harvesters is in their interface circuitry. In this paper, a bias-flip rectifier circuit that can improve the power extraction capability from piezoelectric harvesters over conventional full-bridge rectifiers and voltage doublers by greater than 4X is implemented in a 0.35 ¿m CMOS process. An efficient control circuit to regulate the output voltage of the rectifier and recharge a storage capacitor is presented. The inductor used within the bias-flip rectifier is shared efficiently with a multitude of switching DC-DC converters within the system reducing the overall component count.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/9c794be0186b8e6b22b6c7f93be83dc20c28c1ee

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Citations in the corpus

A batteryless thermoelectric energy-harvesting interface circuit with 35mV startup voltage (2010, methodology): “This prevents us from using the open-loop approximate zero-current switching technique described in [12].”
Review of Power Conditioning for Kinetic Energy Harvesting Systems (2012, background): “An integrated solution for the parallel configuration, referred to as a “bias-flip” rectifier, is presented in [62].”
Low-Power Design of a Self-powered Piezoelectric Energy Harvesting System With Maximum Power Point Tracking (2012, methodology): “self-powered energy harvesting systems [14]–[17], [23]–[25].”