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Power Management Integrated Circuit for Electrostatic Kinetic Energy Harvesters

Abstract : In this paper we present an autonomous Power Management Integrated Circuit PMIC for an electret-biased electrostatic kinetic energy harvester with a Bennet's doubler conditioning circuit. The circuit is designed in high voltage 0.35μm standard bulk CMOS technology. It supplies a low voltage load from the energy extracted from a high voltage transducer. The circuit is provided with a “cold start” mechanism and with a “safe mode” (Recovery) feature that permits to the system to stay active (awake) for a longer time after external vibrations stop temporarily. An ultra-low static power hysteresis comparator is designed for a specific control of the capacitive transducer's conditioning circuit. The autonomy of the system is ensured by a voltage regulator that supplies the internal blocks of the circuit with 1.1 V. The measured maximum end-to-end efficiency of the implemented system is 75% when the available input power was of 80 μW.
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Submitted on : Monday, November 9, 2020 - 6:18:32 PM
Last modification on : Saturday, December 4, 2021 - 3:59:35 AM



Abdelkrim Bessaad, Amine Rhouni, Philippe Basset, Dimitri Galayko. Power Management Integrated Circuit for Electrostatic Kinetic Energy Harvesters. 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Oct 2020, Sevilla, Spain. pp.1-5, ⟨10.1109/ISCAS45731.2020.9180972⟩. ⟨hal-02996835⟩



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