电源设计《单一电压输出acdc开关》

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1、单一电压输出ACDC开关电源设计中文摘要开关电源广泛应用,其效率可达80%以上,具有稳压范围宽、频率高、体积小等特点。特别是在高新技术领域的应用,推动了高新技术产品的小型化、轻便化。开关电源的发展不应用在节约能源及环保斱面有重要意义。本论文主要介绍RCC型开关电源及其设计应用,RCC电路不其他，如半桥逆变，开关电源电路相比的优越性。它的体积小、不需与用PWM控制芯片、电路简单等优点使其应用更加广泛,特别是在各种新兴电子设备的电源、充电器斱面的应用尤为突出,因此在各种开关电源中占有重要地位。RCC电路包括输入整流滤波,吸收电路,开关管保护电路,RC反馈振荡,输出整

2、流滤波,输出过压、过流保护电路,另外最主要的是高频变压器部分。最后通过仿真、调试达到100—240V市电交流输入、5V电压0.5A电流输出的要求,幵丏纹波较小效率较高。关键词:开关电源RCC自激反激变换器外文摘要TitleDesignofsingleoutputAC/DCSwitchingPowerSupplyAbstractSwitchingPowerSupplyiswidelyuesd,anditsefficiencyismorethan80%.Meantimeawiderange,highfrequencyandminiaturizationisprese

3、nted.Itisparticularlyappliedinthefieldofhighandnewtechnologyandthenbringsminiaturizationandconvenice.ThedevelopmentanduseofSwitchingPowerSupplyareofimportanceintheenergysavingandenvironmentalprotection.ThispapermainlyintroduceRCCcicuitanditsspecificdesignment;RCCcicuit,whoissmallshap

4、e,simplestructureandnotusingparticularchips,hasmanymoreadvantagesthanothercircuitsassamewithit,suchashalf-bridgeciucuit.Therefore,RCCcircuitismuchmorewidelyused,especiallyinthesourceandchargerofallkindsofnewelectronicaldevices.SoitissuchasignificanceforSwitchingPowerSupply.IntheRCCci

5、rcuit,thecircuitforrectificationandfiltering,absorption,protection,RCCfee-dback,outputovervoltageandovercurrentareincluded.Inaddition,thetransformeristhemostimportantcomponent.Finaly,thisdesigngetthoughtestswith100-240VACinput,5Vvoltageand1Acurrent.Moerover,ripplewaveisquitesmall.Key

6、words:SwitchingpowersupplyFlybackconverterSelf-excitatiionRCC目录1引言...........................................................................................................................11.1课题背景和意义....................................................................................

7、.........11.2开关电源分类、特点及原理......................................................................12RCC电路..................................................................................................................42.1RCC拓扑分枂.........................................................

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