标签: 器开
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同步整流降压转换器开关损耗描述IRCharacterizationofCdv/dtInducedPowerLossinSynchronousBuckDC-DCConvertersQunZhaoandGoranStojcicInternationalRectifierAsPresentedatAPEC2004Abstract―GoodunderstandingofpowerlossinahighfrequencysynchronousbuckconverterisimportantfordesignoptimizationofbothpowerMOSFETandcircuititself.MostoftheMOSFETpowerlossesarerelativelyeasytoquantify.TheexceptionisthepowerlossassociatedwithCdv/dtinducedturnonofthelow-sideMOSFET(synchronousrectifier).ThispapercharacterizestheCdv/dtinducedpowerlossintwoways.First,detaileddevicecharacterization,in-circuittesting,andmodelingareusedforacomparativelosscalculation.Thismethodrequiresspecializedtestequipmentandisrathercomplicatedandtimeconsuming.Asimp……
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