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1、TDK最近开发出宽温低损耗磁芯PC95TDKCorporationrecentlydevelopedthePC95ferritecorematerialforpowersupplytransformeruse.ThePC95hasgreatlyreducedcorelossesoverawidetemperaturerange(25°Cto120°C).Aselectronicdevicesareinthetrendofminiaturizationandhigherefficiency,thereisincreaseddemandfors
2、mallandhigherefficiencytransformersusedinDCtoDCconvertersandinverters.Atthesametime,electronicdevicesarebeingusedunderabroaderrangeoftemperatureconditions,exemplifiedbytheincreaseduseofelectronicdevicesinautomobilesrequiringhighefficiencyinawidetemperaturerange.MnZnferrite
3、shavelowcorelosses,whichminimizeheatgeneration,andhighsaturation,magneticfluxdensity,makingitwellsuitedforuseinthemaintransformersofswitchingpowersupplies.ItisgenerallyknownthatcorelossesofMnZnferritesareminimizedatthetemperaturewheremagneticanisotropyconstant(k1)iszero,an
4、dtheinabilitytoreducecorelossesoverawidetemperaturerangehasbeenanissueformanyyears.Thisproblemhasbeenaddressedbycreatingseriesofmaterialswithdifferentminimumcorelosstemperaturesfordifferentapplications.TDKhasimprovedthetechnologiesofmaterialandprocesstopreciselycontrolitsm
5、icrostructureandtemperaturedependenceofmagneticproperties.ThishasallowedittosubstantiallyreducecorelossesanddependenceontemperatureandtodevelopthePC95,whichhaslowcorelossesoverawidetemperaturerange.ThePC95hascorelossesoflessthan350kW/m³(100kHz,200mT)inthetemperaturerangeof
6、25°Cto120°C,whichislessthanthoseofpreviousmaterials(suchasTDK’sPC44material).PC95istheindustry’sleading,widetemperaturerangelowlossmaterialforuseinpowersupplies.SincethePC95canbeusedinnear-optimalconditionsoverabroadtemperaturerangeof25°Cto120°C,itiswellsuitedforusenotonly
7、inconventionalswitchingpowersupplies,butalsointhemaintransformersofDCtoDCconvertersofelectricautomobilessuchashybridelectricandfuelcellelectricvehicles,whichexperiencewidevariationsinoperatingtemperatures.PC95iscertaintocontributetothefurtherminiaturizationandhigherefficie
8、ncyofawiderangeofpowersuppliesaswellaslighterandmorefuel-efficientautomobiles.Inaddition,
