TILM5160A宽输入三相逆变器电源参考设计

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1、TILM5160A宽输入三相逆变器电源参考设计时间：2015-03-3017:33:38作者：TI来源：中电网TI公司的LM5160A系列产品是集成了高边和低边MOSFET的65V1,5A同步降压转换器,负载电流1.5A,不需要外接回路补偿快速瞬态响应，可选择CCM或DCM工作,频率可调高达1MHz,具有热关断保护,主要用于工业PLC,IGBT栅极驱动电源，低功率隔离DC/DC转换器(Fly-Buck),车电子，通信初级/次级偏压电源，动力线通信等•本文介绍了LM5160A主要特性，功能框图,几种应用电路，以及三相逆变器电源参考设计主要特性，系统框图,电路图,材料

2、清单和PCB元件布局图.TheLM5160familyisa65-V,1.5-Asynchronousstep-downconverterwithintegratedhigh-sideandlow-sideMOSFETs・Theconstant-on-timecontrolschemerequiresnoloopcompensationandsupportshighstep-downratioswithfasttransientresponse.Aninternalfeedbackamplifiermaintains±1%outputvoltageregulati

3、onovertheentireoperatingtemperaturerange.Theon-timevariesinverselywithinputvoltageresultinginnearlyconstantswitchingfrequency.Peakandvalleycurrentlimitcircuitsprotectagainstoverloadconditions.Theunder-voltagelockout(EN/UVLO)circuitprovidesindependentlyadjustableinputunder-voltagethres

4、holdandhysteresis.TheLM5160isprogrammedthroughtheFPWMpintooperateincontinuousconductionmode(CCM)fromnoloadtofullloadortoautomaticallyswitchtodiscontinuousconductionmode(DCM)atlightloadforhigherefficiency.ForcedCCMoperationsupportsmultipleoutputandisolatedFly-Buckapplicationsusingacoup

5、ledinductor.TheLM5160AsharesthesamefeaturesandpinconfigurationastheLM5160.AnexternalbiassupplycanbeconnectedtotheVCCpinoftheLM5160AineitherBuckorFly-Buckapplications.Thisadditionalcapabilitycanimproveefficiencyathighinputvoltages.LM5160A主耍特性：Wide4.5-Vto65-VInputVoltageRangeIntegratedH

6、ighandLowSideSwitchesNoSchottkyDiodeRequired1.5-AMaximumLoadCurrentConstantOn-TimeControlNoExternalLoopCompensationFastTransientResponseSelectableForcedCCMorDCMOperationCCMOptionSupportsMulti-OutputFly-BuckNearlyConstantSwitchingFrequencyFrequencyAdjustableupto1MHzProgrammableSoft-Sta

7、rtTimePre-BiasedStartupPeakCurrentLimitingProtectionAdjustableInputUVLOandHysteresis±1%FeedbackVoltageReferenceLM5160AallowsexternalVCcBiasThermalShutdownProtectionLM5160A应用：IndustrialProgrammableLogicControllerIGBTGateDriveBiasSupplyTelecomPrimary/SecondarySideBiasE-meterPowerLineCom

8、munic