Experimental Investigation on Low Noise of Switching Power Supply for Compatibility of Miniaturization and Low Standby Power Trend of Electronic Equipment and New Conducted EMI Standard

Abstract

In the power electronics field, the movement that the EMI noise standard is revised is being carried out by IEC. In this paper, we investigate measures to apply frequency spreading to the frequency range and measurement conditions of the new standard(below 150 kHz), and consider measures that can achieve both noise reduction performance and miniaturization of electronic equipment and low standby power performance.