Texas Instruments LM5021-Q1 Handleiding
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LM5021-Q1
SNVSA90–DECEMBER2014
LM5021-Q1AC-DCCurrent-ModePWMController
1Features2Applications
1
•QualifiedforAutomotiveApplications
•DCM/CCMFlybackConverters
•AEC-Q100QualifiedWiththeFollowingResults:•IndustrialPowerConversion
•SMPSforSmartMetersandAudioAmplifiers
–DeviceTemperatureGrade1:–40°Cto125°C
AmbientOperatingTemperatureRange
•BuildingAutomationandWhiteGoodsSMPS
–DeviceHBMClassificationLevel2:±2kV
•IsolatedTelecomPowerSupplies
–DeviceCDMClassificationLevelC4B:750V
3Description
•Ultra-lowStartupCurrent(25µAMaximum)
TheLM5021off-linepulsewidthmodulation(PWM)
•CurrentModeControl
controllercontainsallofthefeaturesneededto
•SkipCycleModeforLowStandbyPower
implementhighlyefficientoff-linesingle-ended
•SingleResistorProgrammableOscillator
flybackandforwardpowerconvertersusingcurrent-
modecontrol.TheLM5021featuresincludeanultra-
•SynchronizableOscillator
low(25µA)start-upcurrent,whichminimizespower
•AdjustableSoft-Start
lossesinthehighvoltagestart-upnetwork.Askip
•Integrated0.7-APeakGateDriver
cyclemodereducespowerconsumptionwithlight
loadsforenergyconservingapplications(ENERGY
•DirectOpto-CouplerInterface
STAR®,CECP,andsoforth).Additionalfeatures
•MaximumDutyCycleLimiting(80%forLM5021-1
includeunder-voltagelockout,cycle-by-cyclecurrent
or50%forLM5021-2)
limit,hiccupmodeoverloadprotection,slope
•SlopeCompensation(LM5021-1Only)
compensation,soft-startandoscillator
synchronizationcapability.Thishighperformance8-
•UndervoltageLockout(UVLO)withHysteresis
pinIChastotalpropagationdelayslessthan100ns
•Cycle-by-CycleOvercurrentProtection
anda1-MHzcapableoscillatorthatisprogrammed
•HiccupModeforContinuousOverloadProtection
withasingleresistor.
•LeadingEdgeBlankingofCurrentSenseSignal
DeviceInformation
(1)
•Package:VSSOP-8
PARTNUMBERPACKAGEBODYSIZE(NOM)
LM5021-Q1VSSOP(8)3.00mm×3.00mm
(1)Forallavailablepackages,seetheorderableaddendumat
theendofthedatasheet.
SimplifiedApplicationDiagram
1
AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,
intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.
Product specificaties
| Merk: | Texas Instruments |
| Categorie: | Niet gecategoriseerd |
| Model: | LM5021-Q1 |
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