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參數(shù)資料
| 型號(hào)： | PKJ4618GEPIP |
| 廠(chǎng)商： | ERICSSON POWER MODULES AB |
| 元件分類(lèi)： | 電源模塊 |
| 英文描述： | 1-OUTPUT 65 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT PACKAGE-9 |
| 文件頁(yè)數(shù)： | 20/30頁(yè) |
| 文件大?。?/td> | 1870K |
| 代理商： | PKJ4618GEPIP |
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PKJ4000EPIEN/LZT146025R8AEricssonPowerModules,June2007
Operating Information
Over Temperature Protection (OTP)
ThePKJ4000ESeriesDC/DCconvertersareprotectedfrom
thermaloverloadbyaninternalovertemperatureshutdown
circuit.WhenthePCBtemperature(centreofPCB)exceeds
135°Ctheconverterwillshutdownimmediately(latching).
Theconvertercanberestartedbycyclingtheinputvoltage
orusingtheremotecontrolfunction.
Input And Output Impedance
Theimpedanceofboththepowersourceandtheloadwill
interactwiththeimpedanceoftheDC/DCconverter.Itis
mostimportanttohavearatiobetweenLandCaslow
aspossible,i.e.alowcharacteristicimpedance,bothat
theinputandoutput,astheconvertershavealowenergy
storagecapability.ThePKJ4000ESeriesDC/DCconverters
havebeendesignedtobecompletelystablewithoutthe
needforexternalcapacitorsontheinputortheoutput
circuits.Theperformanceinsomeapplicationscanbe
enhancedbyadditionofexternalcapacitanceasdescribed
undermaximumcapacitiveload.Ifthedistributionofthe
inputvoltagesourcetotheconvertercontainssignificant
inductance,theadditionofa100Fcapacitoracrossthe
inputoftheconverterwillhelpinsurestability.Thiscapacitor
isnotrequiredwhenpoweringtheDC/DCconverterfrom
alowimpedancesourcewithshort,lowinductance,input
powerleads.
Parallel Operation
ThePKJ4000ESeriesDC/DCconverterscanbeparalleled
forredundancyifexternal"O"-ringdiodesareusedinseries
withtheoutputs.ItisnotrecommendedtoparallelthePKJ
4000ESeriesDC/DCconvertersforincreasedpowerwithout
usingexternalcurrentsharingcircuits.
Maximum Capacitive Load
Whenpoweringloadswithsignificantdynamiccurrent
requirements,thevoltageregulationattheloadcanbe
improvedbyadditionofdecouplingcapacitanceatthe
load.ThemostaffectivetechniqueistolocatelowESR
ceramiccapacitorsasclosetotheloadaspossible,using
severalcapacitorstolowertheeffectiveESR.These
ceramiccapacitorswillhandleshortdurationhigh-frequency
componentsofdynamicloadchanges.Inaddition,higher
valuesofelectrolyticcapacitorsshouldbeusedtohandle
themid-frequencycomponents.Itisequallyimportant
tousegooddesignpractisewhenconfiguringtheDC
distributionsystem.
LowresistanceandlowinductancePCB(printedcircuit
board)layoutsandcablingshouldbeused.Rememberthat
whenusingremotesensing,allresistance,inductanceand
capacitanceofthedistributionsystemiswithinthefeedback
loopoftheconverter.Thiscanaffectontheconverters
compensationandtheresultingstabilityanddynamic
responseperformance.Asa“ruleofthumb”,100F/Aof
outputcurrentcanbeusedwithoutanyadditionalanalysis.
Forexamplewitha25Aconverter,valuesofdecoupling
capacitanceupto2500Fcanbeusedwithoutregardto
stability.Withlargervaluesofcapacitance,theloadtransient
recoverytimecanexceedthespecifiedvalue.Asmuchof
thecapacitanceaspossibleshouldbeoutsidetheremote
sensingloopandclosetotheload.Theabsolutemaximum
valueofoutputcapacitanceis10000F.Forvalueslarger
thanthis,pleasecontactyourlocalEricssonPowerModules
representative.
Current Limit Protection
ThePKJ4000ESeriesDC/DCconvertersincludecurrent
limitingcircuitrythatallowsthemtowithstandcontinuous
overloadsorshortcircuitconditionsontheoutput.Theout-
putvoltagewilldecreasetowardszeroforoutputcurrentsin
excessofmaxoutputcurrent(Iomax).
Theconverterwillresumenormaloperationafterremoval
oftheoverload.Theloaddistributionsystemshouldbe
designedtocarrythemaximumoutputshortcircuitcurrent
specified.
Over Voltage Protection (OVP)
ThePKJ4000ESeriesDC/DCconvertershavelatching
outputovervoltageprotection.Intheeventofanovervolt-
agecondition,theconverterwillshutdownimmediately.The
convertercanberestartedbycyclingtheinputvoltageor
usingtheremotecontrolfunction.
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相關(guān)代理商/技術(shù)參數(shù) |
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| PKJ4618HEPI | 功能描述:DC/DC轉(zhuǎn)換器 1.5 Vdc 40A Iso Input 48V 60W RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
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| PKJ4718BPIT | 功能描述:DC/DC轉(zhuǎn)換器 1.8 Vdc 40A Iso Input 36-75V 72W RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱(chēng)）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸: |
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