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?
fastest rise time (typically below 10 µs) and a D version load switch has the slowest (several milliseconds). For example, the TPS22924 load switch has B, C, and D variations with rise times of 96 µs, 800 µs, and
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