6533b83afe1ef96bd12a7f23

RESEARCH PRODUCT

EMI Worsening in a SMPS with Non-linear Inductor

Scire D.Lullo G.Vitale G.

subject

saturable corepower densitynonlinear magneticsElectromagnetic interference (EMI) filterinductorSettore ING-INF/01 - ElettronicaSwitched Mode Power Supply

description

This paper is focused on the input current in a Switched Mode Power Supply (SMPS) in which the power inductor is exploited up to the saturation showing a non-linear behaviour. The input current exhibits a distortion due to the non-linearity. The electromagnetic interference (EMI) caused by the ripple at switching frequency, superimposed to the DC value of the input current, requires a suitable design of the input differential mode (DM) filter. The input current is analyzed both in the time and frequency domain for different operating conditions, and it is compared to a SMPS equipped with a traditional linear inductor.

yearjournalcountryeditionlanguage
2022-09-01
10.24084/repqj20.352http://hdl.handle.net/10447/567773