Surge immunity test analysis for modern switching mode power supplies

All electronic devices on the market have to comply with the valid standards regarding electromagnetic compatibility. This paper presents an efficient holistic procedure to analyze the surge voltage immunity of a modern power supply topology based on the bridgeless boost power factor correction stage. The procedure forms a structured process flow and allows a simple but effective analysis process based on a simulation. In this process, an early, cost-efficient and detailed surge stress assessment is possible. It also supports the selection procedure for correct protective devices. The process results in a surge protection for the final hardware and published the general surge behavior of a bridgeless boost power factor correction stage in this way first.