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This review evaluates conducted EMI reduction techniques in nonisolated power converters, highlighting their efficacy and impact on performance.
Electromagnetic interference (EMI) reduction is crucial in nonisolated power converters owing to their impact on both compliance and performance. High‐frequency switching in converters generates conducted EMI, which can interfere with nearby sensitive electronics, potentially leading to malfunction or failure. Additionally, failing to suppress EMI can result in converters not meeting electromagnetic compatibility (EMC) standards, limiting their application in regulated environments and affecting the overall product reliability and safety. Effective EMI reduction requires precise modeling of parasitic components such as MOSFETs, inductors, and cables, as these elements critically influence the EMI behavior in converters. Suppression techniques such as filtering, soft switching, and advanced modulation are evaluated not only for their efficacy in EMI attenuation but also for their impact on the converter performance, efficiency, and cost. This investigation provides a detailed analysis of conducted EMI suppression techniques specifically for boost, boost PFC, buck, and buck–boost converters. Emphasis is placed on advanced suppression strategies, including filtering, soft switching, random pulse width modulation (RPWM), and chaotic PWM (CPWM), each evaluated its effectiveness in reducing EMI while maintaining the converter efficiency. This review paper offers a foundation for implementing EMC‐compliant power electronics designs that address conducted EMI challenges.
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Nandhini et al. (2025) studied this question.
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