A High-Efficiency Energy Harvesting Interface for Implanted Biofuel Cell and Thermal Harvesters

Katic, Janko,1986-KTH,Integrerade komponenter och kretsar,Integrated Circuits and Systems (författare)

QC 20170508
A dual-source energy harvesting interface that combines energy from implanted glucose biofuel cell and thermoelectric generator is presented. A single-inductor dual-input dual-output boost converter topology is employed to efficiently transfer the extracted power to the output. A dual-input feature enables the simultaneous maximum power extraction from two harvesters, while a dual-output allows a control circuit to perform complex digital functions at nW power levels. The control circuit reconfigures the converter to improve the efficiency and achieve zero-current and zero-voltage switching. The measurement results of the proposed boost converter, implemented in a 0.18 μm CMOS process, show a peak efficiency of 89.5% when both sources provide a combined input power of 66 μW. In the single-source mode, the converter achieves a peak efficiency of 85.2% at 23 μW for the thermoelectric source and 90.4% at 29 μW for the glucose biofuel cell. The converter can operate from minimum input voltages of 10 mV for the thermoelectric source and 30 mV for the glucose biofuel cell.

Rodriguez, SaulKTH,Integrerade komponenter och kretsar,Integrated Circuits and Systems(Swepub:kth)u1vuponf (författare)
Rusu, Ana,1959-KTH,Skolan för informations- och kommunikationsteknik (ICT),Integrated Circuits and Systems(Swepub:kth)u1ymok24 (författare)
KTHIntegrerade komponenter och kretsar (creator_code:org_t)

Ingår i:IEEE transactions on power electronics: IEEE Press33:5, s. 4125-41340885-89931941-0107

Av författaren/redakt...: Katic, Janko, 19 ...; Rodriguez, Saul; Rusu, Ana, 1959-

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