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参数资料
| 型号： | PMB4310WP/B |
| 厂商： | ERICSSON POWER MODULES AB |
| 元件分类： | 电源模块 |
| 英文描述： | 1-OUTPUT 33 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, PACKAGE-10 |
| 文件页数： | 18/29页 |
| 文件大小： | 1387K |
| 代理商： | PMB4310WP/B |
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EN/LZT146048R4A EricssonPowerModules,March2007
PMB4418TWPDatasheet
Operating Information
Output Voltage Adjust (Vadj)
Theoutputvoltagecanbesetbymeansofanexternal
resistor,connectedtotheVadjpin.Nominaloutputvoltage
0.75VissetbyleavingtheVadjpinopen.Adjustmentcan
onlybemadetoincreasetheoutputvoltagesetting.
Toincrease:
Connectaresistorbetween(Vadj)and(Gnd).Theoutput
voltageincreaseswithdecreasingresistorvalueasshown
inthetablebelow.Notethatthemaximumoutputvoltage
3.63Vmaynotbeexceeded.
Rextup(kohm)=(21.007/(VO-0.75225))-5.1
Circuitconfigurationforoutputvoltageadjust
Increase
+Out
GND
Vadj
Load
Radj
Sense
OutputVoltage(V)
Resistor(ohm)
0.75
Open
1.0
79.691k
1.2
41.817k
1.5
22.990k
1.8
14.949k
2.5
6.919k
3.3
3.145k
Current Limit Protection
ThePMB4000SeriesDC/DCregulatorsincludecurrent
limitingcircuitrythatallowsthemtowithstandcontinuous
overloadsorshortcircuitconditionsontheoutput.Thecur-
rentlimitisofhick-upmodetype.
Theregulatorwillresumenormaloperationafterremoval
oftheoverload.Theloaddistributionsystemshouldbe
designedtocarrythemaximumoutputshortcircuitcurrent
specified.
Input And Output Impedance
Theimpedanceofboththepowersourceandtheloadwill
interactwiththeimpedanceoftheDC/DCregulator.Itis
mostimportanttohavealowcharacteristicimpedance,
bothattheinputandoutput,astheregulatorshavealow
energystoragecapability.Usecapacitorsacrosstheinputif
thesourceinductanceisgreaterthan4.7H.Suitableinput
capacitorsare22F-220FlowESRceramics.
Maximum Capacitive Load
Whenpoweringloadswithsignificantdynamiccurrentre-
quirements,thevoltageregulationattheloadcanbe
improvedbyadditionofdecouplingcapacitanceattheload.
ThemosteffectivetechniqueistolocatelowESRceramic
capacitorsasclosetotheloadaspossible,usingseveral
capacitorstolowerthetotalESR.Theseceramiccapacitors
willhandleshortdurationhigh-frequencycomponentsof
dynamicloadchanges.Inaddition,highervaluesofcapaci-
tors(electrolyticcapacitors)shouldbeusedtohandlethe
mid-frequencycomponents.Itisequallyimportanttouse
gooddesignpracticewhenconfiguringtheDCdistribution
system.
LowresistanceandlowinductancePCBlayoutsandca-
blingshouldbeused.Rememberthatwhenusingremote
sensing,allresistance(includingtheESR),inductanceand
capacitanceofthedistributionsystemiswithinthefeedback
loopoftheregulator.Thiscanaffectontheregulatorscom-
pensationandtheresultingstabilityanddynamicresponse
performance.
VerylowESRandhighcapacitancemustbeusedwithcare.
A“ruleofthumb”isthatthetotalcapacitancemustnever
exceedtypically500-700FifonlylowESR(<2m
)ce-
ramiccapacitorsareused.Ifmorecapacitanceisneeded,
acombinationoflowESRtypeandelectrolyticcapacitors
shouldbeused,otherwisethestabilitywillbeaffected.
ThePMB4000seriesregulatorcanacceptupto5mFof
capacitiveloadontheoutputatfullload.Thisgives<500
F/AofIO.Whenusingthatlargecapacitanceitisimportant
toconsidertheselectionofoutputcapacitors;theresulting
behaviorisacombinationoftheamountofcapacitanceand
ESR.
Minimum Required External Capacitors
Externalinputcapacitorsarerequiredtoincreasethe
lifetimeoftheinternalcapacitorsandtofurtherreducethe
inputripple.Aminimumof44F external input capacitance
F external input capacitance
Fexternalinputcapacitance
withlowESRshouldbeadded.
Aminimumof150F external output capacitance , low
F external output capacitance , low
Fexternaloutputcapacitance,low
ESR,shouldbeaddedfortheconvertertooperateproperly
atfullload.
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| PMB4418TWP/B | 1-OUTPUT 33 W DC-DC REG PWR SUPPLY MODULE |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PMB4310WPM | 制造商:Ericsson 功能描述:- Trays 制造商:Ericsson 功能描述:DC/DC THM NON-ISO SIP11 5VIN 3.3VOUT |
| PMB-441 | 制造商:PROTECHSYSTEMS 制造商全称:PROTECHSYSTEMS 功能描述:Socket 775 Pentium 4 Motherboard with VGA/Sound/2LAN |
| PMB4418TWP | 功能描述:DC/DC转换器 .75-3.6 Vdc 10A Iso Input 3.0-5.5V 33W 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: |
| PMB4420V1.1 | 制造商:Siemens 功能描述:Part Number Only |
| PMB4518TWP | 功能描述:DC/DC转换器 .75-3.6 Vdc 16A Iso Input 3.0-5.5V 53W 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: |
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