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1、1引言3334566783效率的分析及計(jì)算開(kāi)關(guān)電源摘要該系統(tǒng)采用BoostDC—DC變換器力核心實(shí)現(xiàn)軟開(kāi)關(guān)電源，利用TL494電壓驅(qū)動(dòng)脈寬調(diào)制器構(gòu)成了變換器的控制電路?？偪刂破鰿8051C040對(duì)外圍硬件的采樣電氣信號(hào)進(jìn)行控制，實(shí)現(xiàn)電壓在30V-36V范圍內(nèi)的宏觀調(diào)控、預(yù)警點(diǎn)監(jiān)督、數(shù)據(jù)5110液晶顯示、預(yù)值按鍵輸入的功能。通過(guò)電路中相應(yīng)參數(shù)的測(cè)量，驗(yàn)證了該開(kāi)關(guān)電源的各性能指標(biāo)，達(dá)到預(yù)期效果。關(guān)鍵字開(kāi)關(guān)電源BoostDC—DC變換器TL494PWMSwitchingPowerSupplyAbstractThes
2、ystemusesBoostDC-DCconverterasthecoretoachievesoft-switchingpowersupply,theuseofTL494pulsewidthmodulatordrivevoltageconstitutesacontrolcircuitoftheconverter.ThetotalexternalhardwarecontrollerC8051C040samplingofelectricalsignalstocontroltherealizationofvolta
3、ge30V-36Vrangeofmacroeconomicregulationandcontrol，earlywarningmonitoringpoint，liquidcrystaldisplaydata5110，pre-valuefunctionofkeystrokes.Throughthecorrespondingcircuitparametersofmeasurement，theswitchingpowersupplytoverifythevariousperformanceindicatorstoac
4、hievethedesiredeffect.KeyWordsSwitchingPowerSupplyBoostDC-DCconverterTL494PWM目錄2系統(tǒng)設(shè)l十2.1總體A案設(shè)計(jì)2.2BoostDC—DC升壓變換模塊2.3開(kāi)欠電源脈寬調(diào)節(jié)模塊1引言3334566783效率的分析及計(jì)算開(kāi)關(guān)電源摘要該系統(tǒng)采用BoostDC—DC變換器力核心實(shí)現(xiàn)軟開(kāi)關(guān)電源，利用TL494電壓驅(qū)動(dòng)脈寬調(diào)制器構(gòu)成了變換器的控制電路?？偪刂破鰿8051C040對(duì)外圍硬件的采樣電氣信號(hào)進(jìn)行控制，實(shí)現(xiàn)電壓在30V-36V范圍內(nèi)的宏
5、觀調(diào)控、預(yù)警點(diǎn)監(jiān)督、數(shù)據(jù)5110液晶顯示、預(yù)值按鍵輸入的功能。通過(guò)電路中相應(yīng)參數(shù)的測(cè)量，驗(yàn)證了該開(kāi)關(guān)電源的各性能指標(biāo)，達(dá)到預(yù)期效果。關(guān)鍵字開(kāi)關(guān)電源BoostDC—DC變換器TL494PWMSwitchingPowerSupplyAbstractThesystemusesBoostDC-DCconverterasthecoretoachievesoft-switchingpowersupply,theuseofTL494pulsewidthmodulatordrivevoltageconstitutesacon
6、trolcircuitoftheconverter.ThetotalexternalhardwarecontrollerC8051C040samplingofelectricalsignalstocontroltherealizationofvoltage30V-36Vrangeofmacroeconomicregulationandcontrol，earlywarningmonitoringpoint，liquidcrystaldisplaydata5110，pre-valuefunctionofkeyst
7、rokes.Throughthecorrespondingcircuitparametersofmeasurement，theswitchingpowersupplytoverifythevariousperformanceindicatorstoachievethedesiredeffect.KeyWordsSwitchingPowerSupplyBoostDC-DCconverterTL494PWM目錄2系統(tǒng)設(shè)l十2.1總體A案設(shè)計(jì)2.2BoostDC—DC升壓變換模塊2.3開(kāi)欠電源脈寬調(diào)節(jié)模塊2.4電路
8、保護(hù)模塊2.4.1過(guò)流保護(hù)模塊2.4.2輸入欠壓、過(guò)壓保護(hù)模塊3.1效率分析83.2計(jì)算84軟件設(shè)計(jì)84.1軟件控制功能85測(cè)試方數(shù)據(jù)95.1測(cè)試方法95.2測(cè)試儀器9表5.195.3測(cè)試數(shù)據(jù)9表5.29表5.396測(cè)試結(jié)果與分析106.1勾設(shè)計(jì)指標(biāo)進(jìn)行比較106.2產(chǎn)生偏差的原因106.3改進(jìn)方法10經(jīng)過(guò)嚴(yán)格的理論計(jì)算，找出最合適的元器件的僨，簡(jiǎn)化電路屮一些繁瑣的部分，巾于仵比賽屮時(shí)間與精力有限，
