Design and Analysis of Synchronous and Asynchronous Buck Converters in Electrical Applications

The two most commonly used topologies in buck converter applications are asynchronous and synchronous buck converter. These two topologies have their advantages and disadvantages from a performance point of view. The difference in performance, especially in the aspect of efficiency needs to be addressed further, knowing that efficiency is a crucial aspect of buck converter application.This study will analyze the comparison of asynchronous and synchronous topology in terms of its efficiency using software simulation and hardware prototypes. Software simulation will be used to validate the workings of buck converter prototypes by comparing its characteristics against the hardware prototypes. Furthermore, the performance between both topologies will be analyzed under various operating conditions. Based on the results obtained in this study, when the applied duty cycle is low. Also In this study, the two methods will be analyzed, and compare their efficiency using hardware models. The experimental setup of two models validated the operation of the buck converter hardware prototypes. The performance of the two methods was analyzed under a fixed frequency of 500 kHz. The results showed that when the duty cycle was about 41.7% to 95% with a maximum current of 1 ampere, the efficiency of the synchronous structure was better than the asynchronous structure by 12.5%.