标签: avago

Avago数字光电耦合器为汽车应用提供低功耗和高隔离.rar

AVAGO光耦设计者指南OptocouplerDesigner’sGuideAboutThisDesigner’sGuideHowtoUseThisGuideAvagoTechnologiesoptocouplerscanbeusedinanThetableofcontentslistsalltheapplicationsbytheirarrayofisolationapplicationsrangingfrompowergeneraldescription.supplyandmotorcontrolcircuitstodatacommuni-cationanddigitallogicinterfacecircuits.DatasheetsforproductsrecommendedinthisguidecanbefoundontheAvagoTechnologies’websiteatTohelpyouchooseanddesignwithAvagoTechnologieswww.avagotech.com/semiconductors,ortheymaybei……

AVAGO光耦内置的IGBT保护功能DesaturationFaultDetectionOptocouplerGateDriveProductwithFeature:ACPL-332J,ACPL-331JandHCPL-316JApplicationNote53241.Introductionii.Softturn-offDesaturationfaultdetectioncircuitprovidesprotectionThisfeatureexistsinAvagogateoptocoupler,(e.g.ACPL-forpowersemiconductorswitches(IGBTorMOSFETs)332J,ACPL-331JandHCPL-316J).Whenfaultisdetectedagainstshort-circuitcurrenteventswhichmayleadtobytheDESATfeature,aweakpull-downdeviceinthedestructionofthesepowerswitches.Thisdesaturationoutputdrivestagewillturnonto‘softly’turnofftheIGBToftheinverterscanalsooccurduetoaninsufficientandpreventslargedi/dtinducedvoltages.Thisd……

34.定子耦合模型分析StatorCouplingModelAnalysisByJohanIhsanMahmoodMotionControlProductsDivision,AvagoTechnologiesWhitePaperAbstract1.1.RotorandStatorCouplingInthisstudy,finiteelementanalysiswasusedtooptimizeArotorcouplingistypicallyconstructedwithmaterialsthedesignofastatorcouplinginordertoincreaseitssuchasanelastomer,apolymerormetalwithhelicalnaturalfrequency.Throughdesigniterationsandanalysis,(spring-like)design(Figure1a)forflexibility.Thiscouplingitwasdiscoveredthatbyincreasingthecenterholeistoassistradialandaxialmisalignmentofshafts.Italsodiameterofthecouplingaswellasintroducingstiffeninghastobeabletowithstan……

03.10Gb_s串行数据传输的高速印刷电路板走线设计考量TheapplicationoftheelectricalinterfacehasbeenthedegradsimulatedusingHSpicesoftware.Itdemonstratedchannel,iehowthesignalqualitycouldbeaffectedbytheuseabsoluteevofmicrostripversusstriplinetracesandtheirmeasureddassociatedadvantagesanddisadvantagesis……

Packaginghasalwaysbeenthe“AchillesHeal”ofextract-ingthemaximummicrowaveperformanceoutofanyICtechnology.Theinherentparasiticcapacitanceandin-ductanceassociatedwithbondwires,leadframes,andencapsulatingdielectricmaterialsdominatethefnalproductshighfrequencyperformance.OnewaytosolvethisproblemistoeliminateparasiticcausingfactorsandmaketheICbecomethepackage.ThisisthebasisofWSP(WaferScalePackaging).GaAs-BasedSurfaceMountWaferScalePackageMMICsforDCto45GHzApplicationsWhitePaperBy:HenrikMorknerI.IntroductionPackaginghasalwaysbeenthe“AchillesHeal”ofextract-AvagoTechnologieshasbeenexperimentingwithWSPforingthemaximummicrowaveperformanceoutofanyICover10years.Itwasoriginallydevelopedtoprovidealowtechnology.Theinherentparasiticcapacitanceandin-costhermeticpackageforFBARMEMssilicontechnology.ductanceassociatedwithbondwires,leadframes,andLeveragingoffsiliconwaferbondingtechnology,theWSPencapsulatingdielectricmaterialsdominatethefinalsolutionwasappliedtoGaAsPHEMTICfab……

Manydiferentsemiconductortechnologiesarecurrentlybeingusedforpoweramplifers(PAs)thatincludeamixofSiliconandGaAsdevices–SiliconBipolar,SiliconMOSFET,GaAsMESFET,GaAsHBTandGaAspHEMT.Avagousesenhancement-modepHEMT(E-pHEMT)processforitsPAdesignwhilemostcompetitorshavedevelopedGaAsHBTtechnology.ThispapershowswhyE-pHEMTtechnologycanprovidesuperiorelectricalandreliabilityperformanceforpowerampliferdesigninwirelesscommunications.CharacteristicsofE-pHEMTvsHBTsforPAApplicationsWhitePaperIntroductionNoneedfordrainswitchornegativevoltagesupplyManydifferentsemiconductortechnologiesarecurrentlyOneofthedrawbackstotheconventionaldepletion-beingusedforpoweramplifiers(PAs)thatincludeamodepHEMTs,despitethehighperformance,isthemixofSiliconandGaAsdevices……

固态继电器(SSR)是机电继电器的固态替代品，通常用于通断信号和切换低功率交流/直流负载。它包括发光二极管(LED)、光敏FET驱动器和高压MOSFET。LED开启时继电器打开（触点闭合），LED关闭时继电器关闭（触点打开）。SSR具有开关和电流隔离功能。固态继电器瞬变抗扰性白皮书简介共模瞬变效应固态继电器(SSR)是机电继电器的固态替代品，通常用如果SSR输入和输出端出现如图1a所示的瞬变高于通断信号和切换低功率交流/直流负载。它包括发光dv/dt电压，则SSR可能打开或关闭，因为电压耦合二极管(LED)、光敏FET驱动器和高压MOSFET。LED开到了LED、驱动电路或MOSFET的门电路。当LED开启时继电器打开（触点闭合），LED关闭时继电器关闭启时，SSR上的电压可以忽略，因为电压源被用于负（触点打开）。SSR具有开关和电流隔离功能。载。如果SSR的输入和输出端之间的地线存在瞬变电压,负载电压将出现如图1b所示的瞬间电压降。当SSR通常用于需隔离高压电路和低电压或低功率电路的LED关闭时，负载的电压可以忽略。在SSR的电压瞬应用。通过使用SSR，电路可以交换信号，并且同时实变影响下，负载电压可出现如图1c所示的瞬间电压现电隔离。SSR可在高压和低压电路之间形成安全接峰值。SSR的输入端和输出端之间的隔离需通过输入口，通过破坏接地环路消除高压和低压电路之间的串话―输出瞬变抑制规范确定，该规范通常被称为共模抑和干扰。制(CMR)规范。SSR广泛用于电话机、调制解调器、传真机、PBX或中心局设备。在电话应用中，必须……

AssilicontechnologyadvancestoenablehigherdensityASICs,thecorelogicvoltagedecreases.Thelowervoltage,incombinationwithhighercurrentrequirements,requirestightertolerancesonthepowersupplies.ThecontrolofthepowersuppliesfromthePCBtothedieisthesubjectofthisstudy.Afrequencysweepsimulationusingtypicalbypassvaluesshowsthatadiscretepackagecapacitorisnotasignifcantfactorinreducingthechipcorepowersupplyfuctuation.AsmallvoltageboostatthePCBsup-plycanprovideamoreeconomicalsolutiontomanagingthedevicesupplies.PowerSupplyControlfromPCBtoChipCoreWhitePaperBy:NurDevnani,EileenMurrayAvagoTechnologiesAbstractAssilicontechnologyadvancestoenablehigherdensityAsshowninFigure1,thecorepowersupplynetworkinASICs,thecorelogicvoltagedecreases.Thelowervoltage,thesubstrateincludesthefollowinginterconnects:incombinationwithhighercurrentrequirements,requiresChip->FlipChip(FC)bumpstightertolerancesonthepowersupplies.ThecontrolofthepowersuppliesfromthePCBtothedieisthesubjectFCbumps->ViafromFCbumpsofthisstudy.AfrequencysweepsimulationusingtypicalViafromFCbumps……

BothelectromechanicalandsemiconductorswitchesareproventechnologiesusedinthecontrolandroutingofRFsignals.Whiletheuseofmechanicalswitchescanbejustifiedinprecisiontestequipmentsuchasvectornetworkanalyzers,size-andcost-constrainedmass-producedconsumerproductssuchascableorsatellitetelevision(CATV/SATV)deliverysystemscallforelectronicswitchesbasedoneithertransistorsorPINdiodes.Theabsenceofmovingpartsalsogivessemiconductorswitchestheadvantagesbothoffasterresponsetimesandlongerlifespansthantheirmechanicalcounterparts.AcomparisonofBulkandEpitaxialPINdiodesinlowcostwidebandRFswitchingWhitePaperI.INTRODUCTIONII.APPLICATIONBACKGROUNDBothelectromechanicalandsemiconductorswitchesRFswitchescapableofmulti-octaveoperationwithoutareproventechnologiesusedinthecontrolandsignificantsignallossarerequiredinbothtestroutingofRFsignals.WhiletheuseofmechanicalinstrumentsandCATV/SATVequipment.Amulti-carrierswitchescanbejustifiedinprecisiontestequipmentenvironmentlikeCATV/SATVimposesastringentsuchasvectornetworkanalyzers,size-andcost-linearitydemandontheswitch:itmustnotintroduceconstrainedmass-producedconsu……

使用Avago光电耦合器架构安全稳固的工业系统δθδб……

使用Avago的RGB色彩感测器实现反射式色彩感应ReflectiveColorSensingwithAvagoTechnologies’RGBColorSensorWhitePaperAbstract―Reflectivecolorsensingistypicallyrealizedsurface,isreflectedasred.ThereflectedredlightthroughphotodiodeswithmultipleilluminantorimpingesonthecolorsensorproducingR,G,andBphotodiodescoatedwithcolorfilterswithsingleoutputvoltages.Byinterpretingthethreevoltages,illuminant.Thispaperpresentstheconceptofreflectivethecolorcanbedetermined.SincethethreeoutputcolorsensingusinganRGBcolorsensor.First,voltagesincreaselinearlywiththeintensityofthereflectivecolorsensingtheoryandthebasicelementsreflectedlight,thecolorsensoralsomeasuresthewillbed……

InverterGateDriveroptocouplersareideallysuitedforIGBTandMOSFETapplicationsforvariablespeedmotordrives.Theirhighoutputpeakcurrentscoupledwithhighvoltagesafetystandardscertifedgalvanicinsulation,veryhighcom-monmodenoiserejectionisolation,solidstatedevicelevelreliability,andverylowpowerdissipation,makesthemin-dispensableinvertergatedrivercomponents.Thedesignrequirementsandpowerdissipationconsiderationsaremadeheretoensurethatappropriategatedriveroptocouplersareselectedtomatchtheinverters’gatechargeandpowerrequirements.DesignConsiderationsinUsingtheInverterGateDriverOptocouplersforVariableSpeedMotorDrivesbyJamshedNamdarKhanWhitePaperAbstractInverterGateDriveroptocouplersareideallysuitedforIGBTandMOSFETapplicationsforvariablespeedmotordrives.Theirhighoutputpeakcurrentscoupledwithhighvoltagesafetystandardscertifiedgalvanicinsulation,veryhighcom-monmodenoiserejectionisolation,solidstatedevicelevelreliability,andverylowpowerdissipation,makesthemin-dispensableinvertergatedrivercomponents.Thedesignrequirementsandpowerdissipationconsiderationsaremadeheretoensurethatappropriategatedriveroptocouplersareselectedtomatchtheinverters’gatechargeandpowerrequirements.UPS……

Thedesignandimplementationofahighisolationbufferamplifierispresented.ThisICusesatwogainstagetopologyprocessedintheAvagoTechnologiesEnhancementModepHEMTGaAstechnologyandispackagedinthe8-lead2mmx2mmLPCC.Itoperatespreferablyfroma5Voltsupplyandcon-sumesapproximately35mAquiescentcurrent.Byvaryinganexternalbiasresistor,thebufferampli-fiercandelivermaximumoutputpowerupto20dBmat2GHz.Ithasbetterthan40dBofinput-out-putportisolationandoperatesfrom0.5GHzto6GHz.TheICfeaturesinputandoutputportsmatchedto50ohmsimpedanceandprovides20dBcom-pressedgainat2GHz.AtypicaluseofthepartisfordrivingapassivemixerLOportfromaVCOwherehighreverseisolationisrequiredbytheVCO.AHighIsolationBufferAmplifierusingEnhancementModePHEMTTechnologyWhitePaperAbstractiseasilyfrequencypulledbyvariationsinloadimpedance.HighlinearitypassivemixerstypicallyThedesignandimplementationofahighisolationrequire+17dBmLOdrivelevelsandpresentvary-bufferamplifierispresented.ThisICusesatwogainingloadimpedancestotheLOsource.Hence,aneedstagetopologyprocessedintheAvagoTechnologiesexistsforabufferamplifierthatcanraisetheVCOEnhancementModepHEMTGaAstechnologyandoutputsignaltotherequiredpowerleveloftheispackagedinthe8-lead2mmx2mmLPCC.Itmixer,wh……

AvagoTechnologies,inventorofthepopularLED-basedopticalmousenavigationengine,againrevolutionizedthePCmouseindustrywiththeintroductionofLaserStreamlasernavigationtechnology.AvagoTechnologies’newLaserStreamnavigationenginesprovidemuchfinerprecisionandmoreaccuratetrackingonawidervarietyofsurfaces,suchasglossyandreflectivesurfaces.LaserNavigationSafetyandPerformanceinanOpticalMouseSensorWhitePaperIntroductionHowtheHumanEyeWorksAvagoTechnologies,inventorofthepopularLED-basedThehumaneyeconsistsofalens,retina,andopticopticalmousenavigationengine,againrevolutionizednerve.Toseeanobject,thelensinoureyesfocusesthePCmouseindustrywiththeintroductionofanobjectintosmall,sharpimagesontheretina.TheLaserStreamlasernavigationtechnology.AvagoretinacontainsphotoreceptorsthatconvertthelightTechnologies’newLaserStreamnavigationenginesintochemicalsignals.Theopticnervepicksuptheseprovidemuchfiner……

ThenatureoflightemittingsourcesusedinproductsmandatesworldwidecompliancetoOpticalRadiationRegulations.Thisdocumentaddressesproductscontain-inglightemittingsourceswithsufcientlylowlevelsofopticalradiationinaselectedwavelengthrange.Sinceeyesonlymaybeatrisk,wereferto"eyesafety"inthiswhitepaper,ratherthanopticalradiationsafety.Thelaserusedasalightsourceinanopticalmousemustmeeteyesafetyregulationsandbecorrectlyclassifedinordertosafeguardusersafetyandpreventanyuntowardincidentsthatcanseriouslyharmtheuser.Aproductthatisincor-rectlyclassifedtobesafe,andemitsradiationaccessibletoaviewerabovetheClass1levelcancauseirreversibledamagetotheviewer’sretina.LaserNavigationEyeSafetyClassificationforOpticalMouseSensorWhitePaperIntroductionTheRetinalHazardRegionThenatureoflightemittingsourcesusedinproductsTheeyeisthemostsensitiveendorganandisgenerallymandatesworldwidecompliancetoOpticalRadiationthemostvulnerabletoinjurybecauseofitsimagingchar-Regulations.Thisdocumentaddressesproductscontain-acteristics.Thisistrueforallspectralregions,butmostinglightemittingsourceswithsufficientlylowlevelsofparticularlyinthevisibleandnearinfraredparts(orwave-opticalradiationinaselectedwavelengthrange.Sincelengths)ofthespectrum.Together,theyaretermedaseyesonlymaybe……

Themainfeatureofthehybridelectricvehicle(HEV)thathelpstosavefuelconsumptionistheelectricmotordrive.IntheHEVs,thereareseveralconfgurationsinthepropul-sionsystems(ex.electricmotorassistorfullyelectricmotordriveduringstart).Themainconfguaration,theinvertersystem,isrequiredtodeliverpowerfulandefcientdrivetotheelectricmotor.Insophisticatedelectricmotordrivesystems,thereshouldbeasystemtoprovideregenerativebrakingandtransferofenergybacktothestoragesystemviathebatterychargingprocess.Thesystemwillfunctionasbothaninverterforelectricmotorpropulsionandcon-verter/generatorforthebatterychargingprocess.OptocouplerCapabilitiesforHybridElectricVehicleElectricMotorInverterApplicationsWhitePaperThemainfeatureofthehybridelectricvehicle(HEV)thatAvago’sACPL-312TgatedriveR2Coupleriscapableofde-helpstosavefuelconsumptionistheelectricmotordrive.liveringpeakoutputcurrentof2.5AthatcandirectdriveIntheHEVs,thereareseveralconfigurationsinthepropul-theinsulatedgatebipolartransistor(IGBT)intheinvertersionsystems(ex.electricmotorassistorfullyelectricmotorsystemupto1200V/100A.Ifahigheroutputcurrentisdriveduringstart).Themainconfiguaration,theinverterrequiredtodrivethepowerfuldrivesystem,anexternalsystem,isrequiredtodeliverpowerfulandefficientdrivecurrent……

Solarenergyhasrecentlybecomeapopularalternativesourcetomeetenergydemandsaroundtheworldduetothefuctuationofoil/coalpricesandglobalwarmingissues.Oilisalimitedanddiminishingresource,andbecauseofthis,thepricesurgeswhendemandishigh.Oiland/orcoalpoweredgenerators,whenconvertingfossilfuelintoelectricalpower,alsoproduceenormousCO2andotherpollutantsthatareharmfultotheearth.FiberOpticsinSolarEnergyApplicationsWhitePaperAlekIndraIntroductionSolarenergyhasrecentlybecomeapopularalternativeandunwantedsignalsintopowerequipmentcontrolssourcetomeetenergydemandsaroundtheworlddueandcommunication.Itisalsofeasibletousefiberopticstotothefluctuationofoil/coalpricesandglobalwarmingcontrolthetrackingcapabilitiesofthesolarpanels;Fiberissues.Oilisalimitedanddiminishingresource,andopticscommunicationcancoverlongerlinkdistancecon-becauseofthis,thepricesurgeswhendemandishigh.Oilnectionscomparedtocopperwire.Asthesolarfarmsand/orcoalpoweredgenerators,whenconverting……

Inthecomplexmedicaldevicemarkettoday,devicemanu-facturersstrivetodevelopproductsthathavecompetitiveadvantagesandcompellingend-uservalue.Forinstance,demandisrapidlyincreasingforhome-managedtherapyasconsumerawarenessgrowsofthebeneftsandcostsavingsofself-administeredmedicalcare.PortableandAffordableSensorsfortheMedicalDeviceMarketReflectiveSurfaceOpticalMotionSensorEncodersWhitePaperInthecomplexmedicaldevicemarkettoday,devicemanu-toincludenewtechnologiesthatofferthesameorbetterfacturersstrivetodevelopproductsthathavecompetitiveperformanceandqualitylevelsasoldsolutionshave.advantagesandcompellingend-uservalue.Forinstance,Newertechnologyisusuallymorecompactandweighsdemandisrapidlyincreasingforhome-managedtherapyless.asconsumerawarenessgrowsofthebenefitsandcostOnenewtechnologyexamplesurroundsminiaturere-savingsofself-administeredmedicalcare.……

33.如何减轻米勒电容所引起的寄生导通效应MitigationMethodsforParasiticTurn-oneffectduetoMillerCapacitorWhitePaperIntroductionParasiticTurn-onMitigationSolutionsOneofthecommonproblemsfacedwhenswitchingTherearethreeclassicalsolutionstotheaboveproblem;anIGBTisparasiticturn-onduetoMillercapacitor.Thisthefirstbeingtovarythegateresistor(Figure2),secondeffectisnoticeableinsinglesupplygatedriver(0totoaddacapacitorbetweengateandemitter(Figure+15V).Duetothisgate-collectorcoupling,ahighdV/3)andthirdtousenegativegatedrive(Figure4).AdttransientcreatedduringIGBTturn-offcaninduce……