标签: 电源匮乏

Projectors,largepowersupplies,datacomswitchesandrouters,poseaninterestingheatdissipationproblem.Theseapplicationsconsumeenoughpowertopromptadesignertocoolofftheelectronicswithafan.Iftheappropriateairflowacrosstheelectronicsisequaltoorlessthansixtosevencubicfeetperminute(CFM),agoodchoiceoffanwouldbetheDCbrushlessfan.KeepingPowerHungryCircuitsUnderThermalControlByBonnieC.Baker,MicrochipTechnologyInc.ANALOGDESIGNNOTEADN001IntroductionProjectors,largepowersupplies,datacomswitchesandrouters,Foraone-fancircuit,thestand-alonefancontrollerICistheposeaninterestingheatdissipationproblem.Theseapplicationsbetterchoice.Thestand-aloneIChasfaultdetectcircuitryconsumeenoughpowertopromptadesignertocooloffthethatcannotifythesystemwhenthefanhasfailed,sothattheelectronicswithafan.Iftheappropriateairflowacrossthepowerconsumingpartofthesystemcanbeshutdown.The……