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参数资料
| 型号： | PKJ4618GEPI |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 65 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT PACKAGE-9 |
| 文件页数： | 20/30页 |
| 文件大小： | 1870K |
| 代理商： | PKJ4618GEPI |
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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.
相关PDF资料 |
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| PKJ4719EPIPLA | 1-OUTPUT 75 W DC-DC REG PWR SUPPLY MODULE |
| PKJ4119BPIT | 1-OUTPUT 100 W DC-DC REG PWR SUPPLY MODULE |
| PKJ4110BPIT | 1-OUTPUT 132 W DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PKJ4618HEPI | 功能描述:DC/DC转换器 1.5 Vdc 40A Iso Input 48V 60W RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PKJ4713PIP | 制造商:Ericsson 功能描述:ISOLATED, THRU-HOLE, CONVERTER - Bulk |
| PKJ4713PIT | 功能描述:DC/DC转换器 12 Vdc 6.25A Iso Input 36-75V 75W RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PKJ4718BPIT | 功能描述:DC/DC转换器 1.8 Vdc 40A Iso Input 36-75V 72W RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压（标称）: 输出端数量:1 输出电压（通道 1）:3.3 V 输出电流（通道 1）:600 mA 输出电压（通道 2）: 输出电流（通道 2）: 安装风格:SMD/SMT 封装 / 箱体尺寸: |
| PKJ4718PIT | 制造商:Ericsson 功能描述:DC/DC PS SGL-OUT 1.8V 42A 76W - Bulk |
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