Predictive EMI of Multi-sourcing Diodes in converter designs by DPT method

In power converter design, switching components contribute to radiated electromagnetic interference (EMI) due to their turn-on and turn-off transients. In a multi-sourcing environment, selecting the optimal diode for EMI performance is critical. This paper presents a component-level validation method using the double-pulse test to predict EMI differences when diodes from different suppliers are integrated into the same product. This approach eliminates the need for repetitive full-system testing, significantly reducing time and cost while ensuring robust EMI performance. The results demonstrate that diodes with higher reverse recovery current generate more EMI under identical operating conditions.