TC652风扇控制演示板用户指南
ThankyouforpurchasingtheTC652FanControlDemoBoardfromMicrochip
TechnologyInc.TheFanControlDemoBoardisanevaluationtoolthatallowsthe
usertoquicklyprototypefancontrolcircuitsbasedonMicrochip’sTC652orTC653
pulsewidthmodulation(PWM)FanControlICs.
AlogiclevelMOSFETdrivedeviceallowstheFanControlDemoBoardtobeusedwith
virtuallyanybrushlessDCfan.AredLEDstatusindicatorgivesavisualindicationofa
fanfaultcondition(openstatororblockedrotor).AgreenLEDstatusindicatorgivesa
visualindicationofanovertemperaturealert(temperatureisapproximately10°C
higherthanthehightemperaturelimit).
TheTC652FanControlDemoBoardhasthefollowingfeatures:
1.CompleteimplementationofTC652orTC653fancontrolcircuitryona1.0"x1.2"
board.
2.Temperatureproportionalfanspeedcontrol.
3.Overtemperaturealert.
4.Installsdirectlyintouser'sendequipment.
5.Speedsupprototyping,systemdevelopmentandsystemthermal
characterization.TC652FanControlDemoBoardUser’sGuide2002MicrochipTechnologyInc.DS21506BNotethefollowingdetailsofthecodeprotectionfeatureonMicrochipdevices:MicrochipproductsmeetthespecificationcontainedintheirparticularMicrochipDataSheet.Microchipbelievesthatitsfamilyofproductsisoneofthemostsecurefamiliesofitskindonthemarkettoday,whenusedintheintendedmannerandundernormalconditions.Therearedishonestandpossiblyillegalmethodsusedtobreachthecodeprotectionfeature.Allofthesemethods,toourknowl-edge,requireusingtheMicrochipproductsinamanneroutsidetheoperatingspecificationscontainedinMicrochip'sDataSheets.Mostlikely,thepersondoingsoisengaged