High-Fidelity Electromagnetic Modeling for Multi-Output Transformer Design

In this paper an optimized design approach for multi-output transformers used in switched-mode power supplies (SMPS) is presented by leveraging electromagnetic 3D simulations. Traditional transformer design methods are intended to be used in various applications in industry requiring the prediction of key parameters such as transformer impedances, leakage inductance, and parasitic effects, which lead to costly iterations and prolonged development time. Using CST Studio, we accurately model and analyze these parameters which are validated through measurements. This integration of high-fidelity electromagnetic modeling significantly reduces design iterations, which improves efficiency and cost-effectiveness. In addition, generating SPICE-equivalent models from 3D simulations enables comprehensive SMPS system verification before hardware implementation. At the end, this approach enhances transformer reliability, reduces time-to-market, and provides a structured path for future advancements, that’s include thermal analysis and real-world performance optimization.