This paper presents a fully integrated step-up switched-capacitor DC-DC converter for energy harvesting applications. The proposed solution exhibits both a high voltage-conversion ratio and a high power-conversion efficiency from a low-voltage source such as a thermoelectric generator or an indoor solar cell. The circuit has been implemented in TSMC 55nm CMOS process. Measurements demonstrate that it can properly operate with a 220 mV input, providing a 1.9 V output voltage at 10.45 μW output power, with 37.4% power conversion efficiency. We demonstrate that it can be used as a power supply for a Bluetooth Low Energy beacon with a thermoelectric generator subjected to a temperature difference of only 3.5°C.

A 220-mV input, 8.6 step-up voltage conversion ratio, 10.45-μW output power, fully integrated switched-capacitor converter for energy harvesting

Intaschi, Luca
;
Bruschi, Paolo;Iannaccone, Giuseppe;
2017-01-01

Abstract

This paper presents a fully integrated step-up switched-capacitor DC-DC converter for energy harvesting applications. The proposed solution exhibits both a high voltage-conversion ratio and a high power-conversion efficiency from a low-voltage source such as a thermoelectric generator or an indoor solar cell. The circuit has been implemented in TSMC 55nm CMOS process. Measurements demonstrate that it can properly operate with a 220 mV input, providing a 1.9 V output voltage at 10.45 μW output power, with 37.4% power conversion efficiency. We demonstrate that it can be used as a power supply for a Bluetooth Low Energy beacon with a thermoelectric generator subjected to a temperature difference of only 3.5°C.
9781509051915
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/889577
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