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DESIGN OF DC-DC BOOST CONVERTER WITH THERMOELECTRIC POWER SOURCE

Hazli Rafis, Hamidon A.H, M.Y. Azdiana, A.Jaafar, A.A. Latiff, H.H.M. Yusof, W.H.M. Saad

Design of DC-DC Boost Converter for boosting voltage from Thermoelectric Cooler (TEC) with high temperature is demonstrated. Since TEC generates very small voltages from 0.2 V to 0.8V, the use of passive components is not reasonable. In this design, an integrated circuit (IC) MAX 757 is introduced as DC-DC boost converter. The MAX757 can boost input voltage down to 0.7 V and generates a higher adjustable output voltage in the range from 2.7 V to 5.5 V. The ability of the designed circuit was verified at various temperatures and the output voltages were analyzed. Simple in design and low in cost, the circuit can boost small voltages from TEC in a convenient way. Thus, this designed circuit will be very promising in powering up small electronic applications such as sensor circuits in monitoring systems.