无刷直流风扇的智能热管理使用

ThebrushlessDCfan(BDCFan)hasbecometheair

moverofchoiceincomputingequipment,office

automationproducts,homeentertainmentsystems,

andthelike.UnlikeconventionalDCfans,theBDCfan

ismechanicallyrobustbecauseitcontainsnorotating

commutator/brushassemblytosheddustparticles,

wearout,oractasanignitionsource.Inaddition,its

magneticcoilsarestationaryandareusuallymounted

withinarigidframeforsuperiorstructuralintegrityand

thermaldissipation.BDCfansareelectricallyquiet:

theylacktherotatingmagneticfieldsofACmotorsand

thearcingofconventionalDCmotorsthatbroadcast

electronicnoise.TB064IntelligentThermalManagementUsingBrushlessDCFanstoactasa“lastlineofdefense”againstsystemmelt-Author:MicrochipTechnologyInc..down.Athoroughdesignmusttakeotherfactorsintoaccount:INTRODUCTION1.TheBDCfanconsumesasignificantamountofcurrent,yetmaynotalwaysberequired.ItisThebrushlessDCfan(BDCFan)hasbecometheairther