Transcription of Managing Inrush Current (Rev. A) - TI.com
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Managing Inrush Current (Rev. A) - TI.com
ApplicationReportSLVA670A August2014 RevisedMay 2015 ManagingInrushCurrentAlek Kakneviciusand LoadSwitchesABSTRACTIn mostsystems,capacitorsare placedthroughouta designto ensurethereare no voltagedropson initiallyappliedto the system,chargingthesecapacitorscan resultin aninrushcurrentwhichcan exceedthe nominalload left unaddressed,this can causevoltagerailsto fall out of regulation,resultingin the systementeringan ,the inrushcurrentcan exceedthe currentcarryingcapabilityof boardconnectorsas wellas PCBtraces,resultingindamagingthe connectorsand be mitigatedby loadswitchesin theTPS229xxfamilyare slewrate controlledto applicationnoteexplorestypicalcausesof inrushcurrent,problemscausedby inrushcurrent,and solutionsfor inrushcurrentfeaturingintegratedload InrushCurrent?.. "Soft-start or Disadvantagesof Usinga August2014 RevisedMay 2015 ManagingInrushCurrentSubmitDocumentation FeedbackCopyright 2014 2015,TexasInstrumentsIncorporatedINRUSHL OADdVICdt= LoadLoadLoadPower SupplyWhatis InrushCurrent?
Voltage regulators, DC/DC converters, and LDOs may have an integrated soft-start functionality. With this feature, the rise time can be increased, thereby reducing the inrush current.
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