6533b838fe1ef96bd12a46f5

RESEARCH PRODUCT

EMI Filter Re-Design in a SMPS with Inductor in Saturation

D. ScireGianpaolo VitaleGiuseppe Lullo

subject

Switched-mode power supplyComputer sciencebusiness.industryElectrical engineeringElectromagnetic interference (EMI) filter Switched Mode Power Supply power density nonlinear magnetics saturable core inductor.power densityInductorInterference (wave propagation)Settore ING-INF/01 - ElettronicainductorElectromagnetic interferencePower (physics)EMIFilter (video)Hardware_GENERALsaturable coreHardware_INTEGRATEDCIRCUITSnonlinear magneticsPower engineeringelectromagnetic interference (EMI) filterbusinessSwitched Mode Power Supply

description

This paper analyzes the design issues of the input EMI (Electro-Magnetic Interference) filter's in a switching mode power supply where the power inductor is operated in saturation. Starting with a SMPS equipped with linear inductor, the input filter is firstly designed to comply with Standards. Then, a new inductor with a smaller core size is employed in the same SMPS to exploit saturation. The EMI filter is re-designed, taking into account the increase of EMI introduced by the non-linear operation of the inductor. Finally, the reduction of the inductor's size and cost is compared with the increased size and cost of the EMI filter.

yearjournalcountryeditionlanguage
2021-08-10
https://publications.cnr.it/doc/459010