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Title:
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Prospects of Tunnel FETs in the design of power management circuits for weak energy harvesting dc sources
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Author:
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Nunes Cavalheiro, David; Moll Echeto, Francisco de Borja; Valtchev, Stanimir
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. HIPICS - Grup de Circuits i Sistemes Integrats d'Altes Prestacions |
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Abstract:
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In this paper, a new tunnel FET (TFET)-based power management circuit (PMC) is proposed for weak dc energy harvesting sources. Thanks to their particular carrier injection mechanisms, TFETs can be used to design efficient energy harvesting circuits by enabling the power extraction from sources which are not only at very low voltage levels (sub-0.1 V) but also at very low power levels (a few nW). As TFET devices are designed as reverse-biased diodes, changes in conventional circuit topologies are required in order to take full advantage of these emerging devices. The circuit design techniques proposed in this paper represent an improvement in output voltage and input power range with respect to previously published TFET-based PMCs. Simulation results show that the TFET-based PMC can sustain itself from a 2.5 nW@50 mV dc source, powering a load at 0.5 V with 29% of efficiency. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria elèctrica
-Àrees temàtiques de la UPC::Enginyeria electrònica::Components electrònics::Transistors
-Impedance (Electricity)
-Transistors
-Boost converter
-Energy harvesting
-Low-voltage
-Nanopower
-Power management
-Tunnel FET
-Impedància (Electricitat)
-Transistors |
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Rights:
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Document type:
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Article - Published version
Article |
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Published by:
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Institute of Electrical and Electronics Engineers (IEEE)
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