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1、UnderstandingBoostPowerStagesinSwitchmodePowerSuppliesApplicationReportMarch1999MixedSignalProductsSLVA061IMPORTANTNOTICETexasInstrumentsanditssubsidiaries(TI)reservetherighttomakechangestotheirproductsortodiscontinueanyproductorservicewithoutnotice,andadvisecustomersto
2、obtainthelatestversionofrelevantinformationtoverify,beforeplacingorders,thatinformationbeingreliedoniscurrentandcomplete.Allproductsaresoldsubjecttothetermsandconditionsofsalesuppliedatthetimeoforderacknowledgement,includingthosepertainingtowarranty,patentinfringement,a
3、ndlimitationofliability.TIwarrantsperformanceofitssemiconductorproductstothespecificationsapplicableatthetimeofsaleinaccordancewithTI’sstandardwarranty.TestingandotherqualitycontroltechniquesareutilizedtotheextentTIdeemsnecessarytosupportthiswarranty.Specifictestingofal
4、lparametersofeachdeviceisnotnecessarilyperformed,exceptthosemandatedbygovernmentrequirements.CERTAINAPPLICATIONSUSINGSEMICONDUCTORPRODUCTSMAYINVOLVEPOTENTIALRISKSOFDEATH,PERSONALINJURY,ORSEVEREPROPERTYORENVIRONMENTALDAMAGE(“CRITICALAPPLICATIONS”).TISEMICONDUCTORPRODUCTS
5、ARENOTDESIGNED,AUTHORIZED,ORWARRANTEDTOBESUITABLEFORUSEINLIFE-SUPPORTDEVICESORSYSTEMSOROTHERCRITICALAPPLICATIONS.INCLUSIONOFTIPRODUCTSINSUCHAPPLICATIONSISUNDERSTOODTOBEFULLYATTHECUSTOMER’SRISK.Inordertominimizerisksassociatedwiththecustomer’sapplications,adequatedesigna
6、ndoperatingsafeguardsmustbeprovidedbythecustomertominimizeinherentorproceduralhazards.TIassumesnoliabilityforapplicationsassistanceorcustomerproductdesign.TIdoesnotwarrantorrepresentthatanylicense,eitherexpressorimplied,isgrantedunderanypatentright,copyright,maskworkrig
7、ht,orotherintellectualpropertyrightofTIcoveringorrelatingtoanycombination,machine,orprocessinwhichsuchsemiconductorproductsorservicesmightbeorareused.TI’spublicationofinformationregardinganythirdparty’sproductsorservicesdoesnotconstituteTI’sapproval,warrantyorendorsemen
8、tthereof.Copyrightã1999,TexasInstrumentsIncorporatedContents1Introduction.....................................