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A Comparison of Spread Spectrum and Sigma Delta Modulations to Mitigate Conducted EMI in GaN-Based DC-DC Converters

Year: 2024

Type: conference-paper

Abstract: GaN power transistors offer significant advantages with respect to Si ones, but introduce challenges in meeting EMC regulations due to their high switching frequencies. This paper compares two modulation schemes, Spread-Spectrum Modulation (SSM) and Sigma-Delta Modulation (Σ∆M), for reducing the conducted Electromagnetic Interference (EMI) delivered by GaN-based DC-DC converters. The study analyzes how these techniques impact converter performance and evaluates their effectiveness in reducing conducted EMI at low frequencies. The findings provide valuable insights for designers seeking the most effective strategy for EMI mitigation.

Source: International Workshop on the Electromagnetic Compatibility of Integrated Circuits (EMC Compo)

DOI: 10.1109/emccompo61192.2024.10742065

Authors: Alberto Barbaro, Markeljan Fishta, Erica Raviola, Franco Fiori

Institution: Politecnico di Torino

Language: English

Topic: Electromagnetic Compatibility and Noise Suppression

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4404101669

FWCI: 3.125

Cites: 16

Cited by: 4

Related to: 10