Abstract: This study describes DC chopper with Boost and Boost-ZVT with various circuit configuration. Several snubber circuits are connected with the chopper aiming at enhancing the output performance in term of voltage, power and minimizing the chopper losses. The analysis is based on building the mathematical model, the simulation circuits and processing the results using PSIM and Matlab environment. The results varies in wide range according to the applied circuits where the worst case is inherent to the simple boost circuit while the optimized results are obtained when a specified snubber circuit is connected to the main converter circuit.