Title :
Universal power management IC for small-scale energy harvesting with adaptive impedance matching
Author :
Kong, Na ; Deyerle, T. Shaver, IV ; Ha, Dong Sam
Author_Institution :
Dept. of Electr. & Comput. Eng., Virginia Tech, Blacksburg, VA, USA
Abstract :
In this paper, we present a universal power management IC for small-scale energy harvesting with adaptive impedance matching. A non-inverting buck-boost converter is adopted to accommodate a wide input voltage range from different energy sources and varying environmental conditions. The circuit dynamically performs the resistive matching to harvest the maximum power. The circuit is fabricated in 0.18-μm CMOS. Simulation and measurement results of the IC verify the operation of the power stage and the function of controller circuit.
Keywords :
CMOS integrated circuits; energy harvesting; impedance matching; power convertors; CMOS; adaptive impedance matching; controller circuit; energy sources; environmental conditions; noninverting buck-boost converter; size 0.18 mum; small-scale energy harvesting; universal power management IC; Capacitors; Current measurement; Energy harvesting; Impedance; Impedance matching; Sensors; Switches; DC-DC converter; energy harvesting; impedance matching; power management;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2011 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
978-1-4577-0542-7
DOI :
10.1109/ECCE.2011.6064293
