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.

2 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: 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)

3 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.

4 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.

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