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Step-up DC-DC Converter Supplied by a Thermoelectric Generator for IoT Applications
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Autores
Orientador(es)
Resumo(s)
Autonomous and portable electronic circuits are
typically powered by a battery. Since batteries have a limited life
span there is a need to study an alternative to replace batteries
with low-cost energy harvesting sources.
This work reports the design and prototype of a DC-DC
converter to step-up the low voltage of a small low-power thermo
electric generator (TEG), with an output voltage of hundreds of
mV, to attain a system output voltage of 1.2V. After the theoretical
analysis and simulation of the converter, several possibilities for
sizing the converter are evaluated, to be implemented only with
components off-the-shelf (COTS)
In order to be a standalone system, it was also necessary
to design an oscillator to drive the MOSFET with a switching
frequency of a few MHz. A super-capacitor wasv also introduced
in the circuit to retain the TEG input for a reasonable time.
Finally, with the inclusion of a Low-dropout regulator and the
experimental validation of the final prototype, it was possible to
observe a regulated voltage at the output of 1.2 V.
Descrição
Palavras-chave
DC-DC converter energy harvesting thermo electric generator.
Contexto Educativo
Citação
Editora
Academia Militar
Licença CC
Sem licença CC