标签: dc转换器
相关帖子
-
发表于 2023-6-16最后回复 蔡S13923773543 2023-6-16 14:14浏览269回复0
相关资源
-
Inmanyapplications,aDC/DCConverterisusedtoproducearegulatedvoltageorcurrent,derivedfromanunregulatedpowersupply,orfromabattery.Examplesoftheseapplicationsincludebatterychargers,elec-tronicairpurifiers,emergencyexitsigns,anddistrib-utedpowersystems.Insomeofthoseapplications,adedicatedSwitchedModePowerSupply(SMPS)ControllerICisusedinconjunctionwithamicrocontroller.Inotherapplica-tions,however,adedicatedSMPSControllerICmaybeoverkill.AnalternativeapproachistogeneratealowcostSMPSfunctioninasmartmicrocontroller,suchasthePIC16C620A.ThisApplicationNoteshowsamethodofusingthemicrocontrollertoperformsimpleSMPScontrolfunctions.Twocircuitswerebuiltforevaluation.Onecircuitpro-videsaConstantVoltageoutput,theotheraConstantCurrentoutput.AN216DC/DCConverterControllerUsingaPICmicroMicrocontrollerInanytypeofDC/DCConvertercircuit,thepowerAuthor:HartonoDarmawaskitadeviceselectionsareveryimportant.Thekeyparame-MicrochipTechnologyInc.terstolookforinthetransistorQ1aretheswitchingtimeandcurrentrating.Thesetwoparametersgreatlyaffectthemaximumswitchingfrequencyofthecon-……
