Study of a Reliable Buck Topology for High Step- Down DC-DC Power Conversion

A reliable buck topology for high step-down DCDC power conversion is proposed in this study. This converter is a versatile power supply that can be used in a wide range of applications, especially in low-voltage industrial applications. The main advantage of this structure besides the low output voltage ripple, is the simple structure with one power switch and ease of analysis and experimentation due to simple operational modes. In order to investigate the proposed structure, a comprehensive theoretical analysis including operational modes, voltage conversion ratio, and voltage stress across the components is conducted in this research, and the reliability evaluation is carried out to prove its durability and longevity. Furthermore, the proposed configuration is compared with similar topologies to prove its advantages. Finally, the converter is simulated in PLECS software, in order to derive the voltage and current of elements to prove the theoretical analysis and features of the converter.