The experiment was required to evaluate the incorporation of a step-up DC/DC converter to boost the energy recovered from a supercapacitor. This involves the use of 8-Pin MAX756 which is manufactured by Panasonic based on CMOS step-up DC/DC switching regulator for small, low input voltage and battery powered system. It accepts low input voltages down to 0.7V and boosts it to a higher selective voltage of 3.3V or 5V with switching frequency up to 0.5MHz and efficiency up to 80% at 200mA. This DC/DC is coupled to capacitor voltage of capacitance of 30F of maximum operating voltage of 2.3VDC with internal resistance of 0.1(Ω) at 1kHz, diameter 18mm, length 35mm, pin diameter 0.8mm and spacing between pins of 7.5mm based on manufacture’s specification. Charge and discharge characteristics were performed with and without DC/DC converter and compared to theoretical characteristics. It was found that the charge and discharge rate were similar to the theoretical result. Also, when a DC/DC converter was connected, the result showed that the voltage remained more stable as load was increased and the time of discharge was extended.
Onwughalu, M.K (2018); Empirical Analysis of Energy Optimisation of a Supercapacitor using MAX756 DC/DC Boost Converter; International Journal of Scientific and Research Publications (IJSRP)
8(8) (ISSN: 2250-3153), DOI: http://dx.doi.org/10.29322/IJSRP.8.8.2018.p8062