Design of an Arduino Uno Controlled Buck Converter with an Auxiliary Stage for Transient Suppression

A arduino uno controlled buck converter with an auxiliary output stage for transient suppression is proposed in this work. Modern switch-mode power supplies (SMPS) used for point-of-load (POL) applications need to meet increasingly stringent requirements on voltage regulation, while minimizing physical volume and optimizing conversion efficiency. The focus of this paper is the voltage regulation capability of low-power POL converters during load transients. The main objective is to investigate converter topologies and control techniques that can achieve fast and smooth transient performance without significant penalty in volume and efficiency. The digital control method is used due to its ability to implement sophisticated control algorithms. In this propose model the conventional buck inductor is replaced a dual output stages converter, with a small auxiliary output stage connected in parallel with the main output stage. While the main output stage is responsible for steady-state operation and designed to achieve optimum efficiency, the auxiliary stage is activated when a load transient occurs, to help suppress voltage deviation.