Common Mode Noise Reduction Methods Used for High Power Density DC/DC Converters

Compound power semiconductor devices such as Silicon Carbide (SiC) and Gallium Nitride (GaN), are increasingly being adapted into automotive, renewable energy, and energy management applications to advance carbon neutrality. These devices offer the advantage of operating at higher switching frequencies than their silicon-based devices, attributed to their superior switching speed and reduced on-resistance. The ability to operate at elevated switching frequencies also enables the realization of high-power density in DC/DC converters. However, with the widespread application of compound semiconductor devices capable of high-frequency operation, the importance of noise reduction generated from power converters is significantly increasing towards safe and secure societies. Consequently, this paper presents the latest advancements in noise reduction methods based on a comprehensive literature review. This paper introduces strategies for common-mode noise reduction in high-power and high-frequency applications without necessitating an increase in the converter's volume.