LM5030 Application: DC - DC Converter Utilizing …

1 LM5030LM5030 Application: DC - DC Converter Utilizing the Push- pull TopologyLiterature Number: SNVA5531LM5030 Application DC DCLM5030 Application DC DCConverterConverterUtilizing the Push-PullUtilizing the Push-PullTopologyTopology2 Push- pull TopologyPush- pull Topology D1RC+-+Q1nsnsD2 VgQ2npnpLVout = Vin * D* Ns * 2 NpVinVoutQ1Q2D3 Push- pull SwitchingPush- pull SwitchingWaveformsWaveformsILVDS(PUSH)VD S( pull )Vin =48 VVout = = 5A4LM5030 Push- pull ControllerLM5030 Push- pull ControllerFeaturesFeatures Internal 15-100V start-up regulatorInternal 15-100V start-up regulator CM control, internal slope control, internal slope comp. Set frequency with single resistorSet frequency with single resistor 100k 600kHz100k 600kHz Synchronizable Synchronizable Error ampError amp Precision referencePrecision reference Programmable soft-startProgrammable soft-start Dual mode over-current protectionDual mode over-current protection Direct Direct optoopto-coupler interface-coupler interface Integrated gate driversIntegrated gate drivers Fixed output driver deadtimeFixed output driver deadtime(150nsec)(150nsec) Thermal shutdown (165 Thermal shutdown (165 C)C)Packages:Packages.

2 MSOP10, MSOP10, LLP10 (4mm x 4mm)LLP10 (4mm x 4mm) / SS / REGENABLEVinVcc2 KRTN5LM5030 AdvantagesLM5030 AdvantagesExternalExternalInternal & AdjustableInternal & AdjustableSlope CompensationSlope CompensationExternal to Vcc (FFwd Issue)External to Vcc (FFwd Issue)Internal pull -up to VrefInternal pull -up to VrefOpto InterfaceOpto InterfaceSO8 or TSSOP8SO8 or TSSOP8 MSOP10 or LLP10 MSOP10 or LLP10 PackagesPackagesFixed / Wide ToleranceFixed / Wide ToleranceProgrammableProgrammableSoft-St artSoft-Start100nsec typical100nsec typical40nsec typical40nsec typicalCurrent Sense DelayCurrent Sense DelayExternalExternalInternalInternal100 V Start-up Regulator100V Start-up RegulatorDifficultDifficultYesYesSynchro nizableSynchronizableUCC2808 UCC2808LM5030LM5030 Feature:Feature:6 Application ConverterApplication ConverterPerformancePerformanceInput Range: 36 to 75 VOutput Voltage: Current: 0 to 10 AMeasured Efficiency (48V Input) @ 10A and @5 ABoard Size: x x Regulation: Regulation: Limit ~11A7LM5030 Push- pull Demo BoardLM5030 Push- pull Demo Board 36V-75 Vin36V-75 Vin to + @ 10A to + @ 10 AInput.

3 36 75 @ 10A8 Demonstration ConverterDemonstration ConverterPhotoPhotoIMPORTANTNOTICET exasInstrumentsIncorporatedanditssubsidi aries(TI)reservetherighttomakecorrection s,modifications,enhancements,improvement s, s accordancewithTI s ,testingofallparametersofeachproductis , ,eitherexpressorimplied,is grantedunderanyTIpatentright,copyright,m askworkright,orotherTIintellectualproper tyrightrelatingtoanycombination,machine, orprocessin licensefroma thirdpartyunderthepatentsorotherintellec tualpropertyofthethirdparty,ora TIdatabooksordatasheetsis permissibleonlyif reproductionis withoutalterationandis accompaniedbyallassociatedwarranties,con ditions,limitations, safety-criticalapplications(suchaslifesu pport)wherea failureoftheTIproductwouldreasonablybeex pectedtocauseseverepersonalinjuryordeath , thesafetyandregulatoryramificationsofthe irapplications,andacknowledgeandagreetha ttheyaresolelyresponsibleforalllegal,reg ulatoryandsafety-relatedrequirementsconc erningtheirproductsandanyuseofTIproducts in suchsafety-criticalapplications, , military/aerospaceapplicationsorenvironm entsunlesstheTIproductsarespecificallyde signatedbyTIasmilitary-gradeor"enhancedp lastic.

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