高效250w pfc電源解決方案

1、CirrusCirrusCS1501CS1501高效高效250W250WPFCPFC電源解決方案電源解決方案Cirrus公司的CS1501是高性能數(shù)字功率因素修正(PFC)控制器它能動態(tài)管理PFC從而在很寬負(fù)載范圍內(nèi)得到高效率.CS1501具有零電壓開關(guān)拓?fù)淝穳烘i住(UVLO)輸出過壓保護(hù)逐個(gè)周期的限流開路短路保護(hù)和熱關(guān)斷主要用在LCD和LEDTV筆記本電腦服務(wù)器通信設(shè)備.本文介紹了CS1501主要特性方框圖典型應(yīng)用電路圖以及CS150

2、1250W高效PFC演示板主要特性電路圖材料清單和PCB元件布局圖表.TheCS1501isahighperfmancedigitalpowerfactcrection(PFC)controllerdesignedfswitchingmodepowersupply(SMPS)applications.TheCS1501activELymanagesthepowerfactcrectionwhileachievinghighefficie

3、ncyoverawideloadrange.TheCS1501adaptivelycontrolstheinputACcurrentsothatitisinphasewiththeACmainsvoltageitswavefmmimicstheinputvoltagewavefm.ThePFCcontrollerexecutesadaptivedigitalalgithmsdesignedtoshapetheACmainsinputcu

4、rrentwavefmtobeinphasewiththeinputvoltagewavefm.TheCS1501isequippedwithazerocurrentdetection(ZCD)circuitprovidingthePFCdigitalcontrollerthecapabilitytoturnontheMOSFETwhenthevoltageacrossthedrainsourceisnearzero.Additiona

5、llyacurrentsensingcircuitisincpatedfinstantaneousovercurrentprotection.CS1501主要特性:?DigitalEMINoiseShaping?AdaptiveDigitalEnergyController?ExcellentEfficiencyUnderAllLoadLineConditions?ZerovoltageSwitchingTopology?Minimal

6、ExternalDevicesRequired?AdaptiveDigitalControlLoop?ComprehensiveSafetyFeatures?UndervoltageLockout(UVLO)?OutputOvervoltageProtection圖2.CS1501典型應(yīng)用電路圖S1501250W高效PFC演示板TheCDB1501250WboarddemonstratestheperfmanceoftheCS1501d

7、igitalPFCcontrollerwitha250Wattoutputatalinkvoltageof400volts.TheCDB1501250WboarddemonstratestheperfmanceoftheCS1501withinputvoltagerangeof90265VACtypicallyseeninuniversalinputapplications.ThisboardhasbeendesignedfaVlink

8、of400V250Wattsfullload.Extremecautionneedstobeexercisedwhilehlingthisboard.Thisboardistobeusedbytrainedprofessionalsonly.PritoapplyingACpowertotheCDB1501250WboardtheCS1501needstobebiasedusinganexternal13VDCpowersupply.Th

9、isdocumentprovidestheschematicftheboard.Itincludesoscilloscopescreenshotsthatindicateoperatingwavefms.GraphsarealsoprovidedthatdocumenttheperfmanceoftheboardintermsofEfficiencyvs.LoadTotalHarmonicDisttionvs.LoadPowerFact

10、vs.LoadftheCS1501PFCcontrollerIC.CS1501250W高效PFC演示板主要特性:?VariableOnTimeVariableFrequencyDCMPFCController?LineVoltageRange:90to265VACRMS?Outputvoltage:400V?RatedPout:250W?Efficiency:96.5%@250W220VAC?NoloadPowerDissipation