开关电源毕业设计（完整版）实用资料(可以直接使用，可编辑完整版实用资料，欢迎下载）摘要目前开关电源的使用对象涵盖了包括空间技术、计算机、通信、仪器仪表、汽车电子、照明电器及家用电器等领域,几乎可以说是只要有电子产品的地方就有开关电源的用武之地。开关电源的诞生历史虽然短暂,但是开关电源技术的发但是开关电源技术的发展却是日新月异。本课题以AVR128为控制核心,设计并制作了一个能输出±5V和±15V的串联型它激式调压稳压措施为调宽式的开关电源。本系统由辅助电源模块、整流滤波模块、DC/DC模块、驱动模块、保护模块和采样模块组成。辅助电源模块主要是给单片机以及驱动模块,采样模块和保护模块中的芯片供电用;整流滤波模块中采用桥式不可控整流和无源LC滤波器;DC/DC模块是用于实现电压的转换,该模块中采用的是Buck电路,电路结构简单;驱动模块用于驱动DC/DC模块中的开关管,该模块中主要运用了开关管驱动芯片IR2110,用集成芯片IR2110去驱动开关管比用模拟电路搭建的驱动电路更可靠。该系统工作效率较高、能自动稳定输出电压、还能在输出过压或者过流的时候自动保护。关键词:开关电源,整流滤波,驱动,采样,保护模块AbstractAtpresent,theuseofswitchpowersupplyobjectcoveredincludingspacetechnology,computer,communication,instrumentsandmeters,automobileelectronics,electricallightingandhouseholdappliances,etc.Aslongasthereareelectronicproducts,therehaveswitchpowersupplyanimations.Thoughthebirthofswitchpowersupply’shistoryisshort,thedevelopmentofthetechnologyischanging.ThistopictoAVR128ascontrolcore,designedandproducedaswithpowersupplythatcanoutput±5Vto±15Vtypeofseriesofvoltageregulatingmeasuresofitforthewidetypeofit.Thesysthemmposedofauxiliarypowersupplymoudletifierfiltermodules,DC/DCmodule,drivermodule,protectmoduleandsamplingmodule.Auxiliarypowersupplymodulemainlysupplypowerforsingle-chipmicrocomputeranddrivingmodule,samplingmoduleandprotectmodule.RectifierfiltermodulesusingbridgetypenotcontrolledrectifyingandpassiveLCfilters.DC/DCmoduleisusedtorealizethetransformationofthevoltage.ThemoduleuseBuckcircuitswithitscircuitstructuresimple.DrivermodulesusedtodrivetheswithtubeofDC/DCmodule.ThismodulemainlyutilizedswitchtubeIR2110drivechip.AndwithintegratedchipsIR2110todrivethananalogswitchtubewithsettingupthedrivingcircuitismorereliable.Thesystemcanautomaticallyhighworkefficiency,stableoutputvoltage,stillcanbeprotectitselfwhenitoutputpressorflowautomatic.Keywords:switchingpowersupply,rectifierfiltering,drive,sampling,protectmodule目录摘要.............................................................IAbstract...........................................................II1绪言1.1课题背景....