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ID:39507378
大小:750.66 KB
页数:7页
时间:2019-07-04
《1MHz Multi-Resonant Push-Pull 48V VRM》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、1MHzMulti-ResonantPush-Pull48VVRMMaoYe,MingXuandFredC.LeeCenterforPowerElectronicsSystemsTheBradleyDepartmentofElectricalandComputerEngineeringVirginiaPolytechnicInstituteandStateUniversityBlacksburg,VA24061USAAbstract—Forfuturehigh-endserverandworkstationworkingtogetherinonemotherboard.Sothepow
2、erlevelinapplications,itwillbeimpracticalforvoltageregulatormodulessuchcasesishigh.Asanalternative,distributedpowersystems(VRMs)todrawpowerfromthe12Voutputofthesilverbox(DPSs)withvoltagebusesof48Vmaybemorepracticalforbecausethevoltagebuswillbetoolowtodelivertheincreasingfuturecomputersystems,suc
3、hasserversandhigh-endhighlevelsofpower.Therefore,distributedpowersystems(DPSs)workstations.Comparedtothelow-voltagebusDPS,thewithbusesof48Vwillbemorefeasiblesolutionsforfuturehigh-voltagebusDPSiseasytouse.Theconductionlossofthehigh-endcomputers.Thispaperpresentsanovelmulti-resonanthigh-voltagebu
4、sDPSislower,andthedistributedbusiseasytopush-pull(MRPP)topologyfor48VVRMs,basedonmethodsfordesign.Inahigh-voltageDPSthetransientresponseoftheloadreducingtheconductionlossandeliminatingthebodydiodehaslesseffectonthebusvoltage,andthenlesseffectontheconductionandreverse-recoverylossesofthesynchrono
5、usotherloads.Theinputfiltersizeofthehigh-voltage-inputVRMsrectifier.Two48V-1.2V70Aprototypesarebuilt,andtheircanbereducedsignificantly[1].Anothermeritof48V-inputefficiencyis86%at1MHz.VRMsisthatbecausetransformersareused,thedutycyclecanKeywords-VRM,DC-DCtransformer,multi-resonantconverter.beoptim
6、izedforefficiency,ripple-cancelingeffectandtransientbyadjustingtheturnsratio.I.INTRODUCTIONThispaperfocusesprimarilyonanovelmulti-resonantpush-pull(MRPP)topologyfor48VVRMsbasedonmethodsInthelastdecade,thecomputerindustry’sdevelopmenthasforreducingconductionlossandeliminatingbodydiodebeendramatic
7、.Thespeedandintegrationdensityofconductionandreverse-recoverylossesofthesynchronousmicroprocessorshaveincreasedrapidly.Nowtheprocessorrectifier.Two48V-1.2V70Aprototypesarebuilt,andtheirworkswithclockfrequenciesinthe2~3GHzran
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