A BATTERY HARVESTING BUCK-BOOST CONVERTER USING DUAL PATH OPERATION FOR INDUCTOR CURRENT REDUCTION

Abstract

Being able to accommodate varying power supply while maintaining a stable output has became a standard for DC-DC converters. This article introduces a dual conduction paths buck-boost converter at reducing inductor current stress and conduction losses by having an additional path for current to traverse as well as having only one power switch in series with the inductor. Through simulations, the efficiency of the converter with respect to output current. In Buck mode, the efficiency remains high at around 96.7% at low current levels and gradually decreases as the current increases, but stays above 96% up to 1 A. In contrast, the Boost mode starts with an efficiency of about 91% and gradually increases with higher current, reaching approximately 95% at 1 A.