With the recent increase in the demand for vehicle power converters, various systems are being developed. Accordingly, a wide range of topologies has been developed, and extensive research is being undertaken on improving efficiency and performance. In line with these efforts, this paper proposes a design technique capable of reducing the time required for developing power converters and optimizing the verification process. The proposed technique involves designing and developing a model-based control algorithm for a simulation tool. Today's power converters are developed by determining design specifications, selecting components, developing the control algorithm, and debugging. While this approach is suitable for developing a single product, development must restart from scratch when there are changes in specifications or the components used, prolonging the development period and increasing the cost. The method proposed in this paper adds model simulation and plant debugging to development and debugging processes and reflects them in the design after verification. This involves designing a plant model and the controller model according to the topology, as well as software optimization. The algorithm is then verified and applied to the actual product. In this paper, the design and manufacturing processes based on a simple buck converter is explained in two phases of simulation and actual application.