DC/DC regulator Input 3.0 - 5.5 V Output 10 A

Key Features • Wideinput,3.0-5.5Vdc

• Programmableoutput,0.75-3.6Vdc

• Undervoltageprotection

• Shortcircuitprotection

• Remotesense

• RemoteOn/Off

• DesignforEnvironment(DfE)

• EuropeanCommissionDirective2002/95/EC(RoHs)compliant

E Datasheet

DC/DCregulatorInput3.0-5.5VOutput10A

PMB4418TWP

ThePMBseriesofSILDC/DCregulators(POL)areintendedtobeusedaslocaldistributedpowersourcesindistributedpowerarchitecturelevel4.Thesinglein-linedesignmakesthePMBseriessuit-ableforapplicationswhereboardspaceislimited.ThehighefficiencyandhighreliabilityofthePMBseriesmakesthemparticularlysuitedforthecom-municationsequipmentoftodayandtomorrow.

Theseproductsaremanufacturedusingthemostadvancedtechnologiesandmaterialstocomplywithenvironmentalrequirements.Designedtomeethighreliabilityrequirementsofsystemsmanufacturers,thePMBrespondstoworld-classspecifications.EricssonPowerModulesisanISO9001/14001certifiedsupplier.

ContentsProductProgram. . . . . . . . . . . . . . . . . . . . . . 2MechanicalData. . . . . . . . . . . . . . . . . . . . . . 2Connections . . . . . . . . . . . . . . . . . . . . . . . . . 3AbsoluteMaximumRatings . . . . . . . . . . . . . 3Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3ProductQualificationSpecification. . . . . . . . 4SafetySpecification . . . . . . . . . . . . . . . . . . . 5Adjustedto1.0Vout-Data. . . . . . . . . . . . . 6Adjustedto1.2Vout-Data. . . . . . . . . . . . . 9Adjustedto1.5Vout-Data. . . . . . . . . . . . 12Adjustedto1.8Vout-Data. . . . . . . . . . . . 15Adjustedto2.5Vout-Data. . . . . . . . . . . . 18Adjustedto3.3Vout-Data. . . . . . . . . . . . 21EMCSpecification. . . . . . . . . . . . . . . . . . . . 24OperatingInformation. . . . . . . . . . . . . . . . . 24ThermalConsiderations . . . . . . . . . . . . . . . 27SolderingInformation. . . . . . . . . . . . . . . . . 28DeliveryPackageInformation. . . . . . . . . . . 28Reliability. . . . . . . . . . . . . . . . . . . . . . . . . . . 28CompatibilitywithRoHSrequirements. . . . 28SalesOfficesandContactInformation. . . . 29

EN/LZT146048R4A©EricssonPowerModules,March2007PMB4418TWPDatasheet

8,80[0.346]

7,40[0.291]

51,80 [2.039]

48,26 [1.900]

Recommended footprint (customer board), no components within border.Holes: Ø1,0 [0.04] through plated holes with Ø1,5 [0.06] pads on both sides.

Note 1: For other pin lengths, refer to Product program/Ordering information

1 2 3 4 5 6 7 8 9 10

Dimensions in mm [inch]

Tolerances (unless specified):x,x +/-0,5 [0.02]x,xx +/-0,25 [0.01]

E

7,0 [0.27]

8,5 [0.33] max

choke

35,56 [1.400]

48,26 [1.900]

2,54 [0.100] (7x) (1,27 [0.05])

13,20[0.520]

50,8 [2.00]

pinlength3,60[0.142]

(Note1)

1

1

Mechanical Data

Product Program

Delivery option M.o.q. Suffix Example

Tray 100pcs /B PMB4xxxxWP/B

Ordering Information

VIVO/IOmax

POmax OrderingNo. CommentOutput1

3.0-5.5V* 0.8-3.6V/10A 33W PMB4418TWP Standardversion

3.0-5.5V 1.0V/10A 10W PMB4118NWP Onrequest

3.0-5.5V 1.2V/10A 12W PMB4118LWP Onrequest

3.0-5.5V 1.5V/10A 15W PMB4118HWP Released

3.0-5.5V 1.8V/10A 18W PMB4118GWP Released

3.0-5.5V 2.5V/10A 25W PMB4219WP Released

3.8-5.5V 3.3V/10A 33W PMB4310WP Released

*Inputvoltagelimitedto3.8-5.5Vfor3.3Voutandforoutputvoltagesof3.3Vand4.5-5.5foroutputvoltagesabove3.3V.

Option Suffix Example

PositiveRemoteControllogic P PMB4418TWPP


Characteristics min typ max Unit

Tref OperatingReferenceTemperature,seepg.27 -45 +115 ˚C

TS Storagetemperature -55 +125 ˚C

VI Inputvoltage -0.3 +5.5 Vdc

Characteristics Conditions min typ max Unit

VI Inputvoltagerange 3.0 5.5 Vdc

VIoff Turn-offinputvoltage

Rampfromhighervoltage,Voutsetto1.0-1.8V 1.9

VdcRampfromhighervoltage,Voutsetto2.5V 2.5

Rampfromhighervoltage,Voutsetto3.3V 3.5

VIon Turn-oninputvoltage

Rampfromlowervoltage,Voutsetto1.0-1.8V 2.1

VdcRampfromlowervoltage,Voutsetto2.5V 2.7

Rampfromlowervoltage,Voutsetto3.3V 3.6

CI Inputcapacitance 20 µF

PIi Inputidlingpower Io=0A,VI=5V 590 mW

PRC Inputstand-bypower(RCactive) Nonoperation,VI=5V 7.5 mW

VIac Inputripple1) 20Hz...5MHz,Iomax,VI=5V 400 mV

Input

StressinexcessofAbsoluteMaximumRatingsmaycausepermanentdamage.

AbsoluteMaximumRatings,sometimesreferredtoasnodestructionlimits,are

normallytestedwithoneparameteratatimeexceedingthelimitsofOutputdata

orElectricalCharacteristics.Ifexposedtostressabovetheselimits,functionand

performancemaydegradeinanunspecifiedmanner.

Absolute Maximum Ratings

Tref = -30 ... +90 ˚C, VI=3.0...5.5VunlessotherwisespecifiedTypvaluesspecifiedat:Tref = +25 ˚C, VInom,Iomax=10A

1)Measuredwith2x22µFceramiccapacitors

Connections Weight7.7g

Pin Designation Function

1 +Out Positiveoutput


3 +Sense Positivesense


5 GND Ground

6 GND Ground

7 +In Positiveinput

8 +In Positiveinput

9 Vadj Outputvoltageadjust

10 RC Remotecontrol

PinsMaterial:CopperalloyPlating:Mattetinovernickel


Characteristics

RandomVibration IEC60068-2-64FrequencyAccelerationdensity

5...500Hz0.5g2/Hz

Mechanicalshock(halfsinus)

IEC60068-2-27PeakaccelerationDuration

50g11ms

Leadintegrity IEC60068-2-21Ub Simultaneousbending Allleads

Temperaturecycling JESD22-A104-BGTemperatureNumberofcycles

-40 ... +125 ˚C300

Accelerateddampheat JESD22-A101-B

TemperatureHumidityDurationBias

+85 ˚C85%RH1000hoursmaxinputvoltage

SolderabilityIEC60068-2-54(AgedaccordingtoJESD22-A101-B,240hnobias)

SolderimmersiondepthTimeforonsetofwettingWettingforce

2mm<2.5s>200mN/m

Cold(inoperation) IEC60068-2-1TemperatureDuration

-45 ˚C72h

Hightemperaturestorage JESD22-A103-BATemperatureDuration

+125 ˚C1000h

Product Qualification Specification

Fundamental Circuit Diagram

GNDGND

PWM

+IN +OUT

+SENSE

Vadj

controller

Ref

GND

Erroramplifier

RC RC

GND

Block


EricssonPowerModulesDC/DCconvertersandDC/DCregulatorsaredesignedinaccordancewithsafetystandardsIEC/EN/UL60950, Safety of Information Technology Equipment.

IEC/EN/UL60950containsrequirementstopreventinjuryordamageduetothefollowinghazards:•Electrical shock •Energy hazards •Fire •Mechanical and heat hazards •Radiation hazards •Chemical hazards

On-boardDC-DCconvertersaredefinedascomponentpowersupplies.AscomponentstheycannotfullycomplywiththeprovisionsofanySafetyrequirementswithout“ConditionsofAcceptability”.ItistheresponsibilityoftheinstallertoensurethatthefinalproducthousingthesecomponentscomplieswiththerequirementsofallapplicableSafetystandardsandDirectivesforthefinalproduct.

ComponentpowersuppliesforgeneraluseshouldcomplywiththerequirementsinIEC60950,EN60950andUL60950“Safetyofinformationtechnologyequipment”.

Thereareothermoreproductrelatedstandards,e.g.IEC61204-7“Safetystandardforpowersupplies",IEEE802.3af“EthernetLAN/MANDataterminalequipmentpower”,andETS300132-2“Powersupplyinterfaceattheinputtotelecommunicationsequipment;part2:DC”,butallofthesestandardsarebasedonIEC/EN/UL60950withregardstosafety.

EricssonPowerModulesDC/DCconvertersandDC/DCregulatorsareUL60950recognizedandcertifiedinaccordancewithEN60950.

TheflammabilityratingforallconstructionpartsoftheproductsmeetsUL94V-0.

Theproductsshouldbeinstalledintheend-useequipment,inaccordancewiththerequirementsoftheultimateapplication.NormallytheoutputoftheDC/DCconverterisconsideredasSELV(SafetyExtraLowVoltage)andtheinputsourcemustbeisolatedbyminimumDoubleorReinforcedInsulationfromtheprimarycircuit(ACmains)inaccordancewithIEC/EN/UL60950.

Safety Specification

IsolatedDC/DCconverters.

TheinputvoltagetotheDC/DCregulatorisSELV(SafetyExtraLowVoltage)andtheoutputremainsSELVundernormalandabnormaloperatingconditions.

ItisrecommendedthataslowblowfusewitharatingtwicethemaximuminputcurrentperselectedproductbeusedattheinputofeachDC/DCregulator.

Non-isolatedDC/DCregulators.

24Vdcsystems.TheinputvoltagetotheDC/DCconverterisSELV(SafetyExtraLowVoltage)andtheoutputremainsSELVundernormalandabnormaloperatingconditions.

48and60Vdcsystems.IftheinputvoltagetoEricssonPowerModulesDC/DCconverteris75Vdcorless,thentheoutputremainsSELV(SafetyExtraLowVoltage)undernormalandabnormaloperatingconditions.SinglefaulttestingintheinputpowersupplycircuitshouldbeperformedwiththeDC/DCconverterconnectedtodemonstratethattheinputvoltagedoesnotexceed75Vdc.

IftheinputpowersourcecircuitisaDCpowersystem,thesourcemaybetreatedasaTNV2circuitandtestinghasdemonstratedcompliancewithSELVlimitsandisolationrequirementsequivalenttoBasicInsulationinaccordancewithIEC/EN/UL60950.

ItisrecommendedthatafastblowfusewitharatingtwicethemaximuminputcurrentperselectedproductbeusedattheinputofeachDC/DCconverter.Ifaninputfilterisusedinthecircuitthefuseshouldbeplacedinfrontoftheinputfilter.IntherareeventofacomponentproblemintheinputfilterorintheDC/DCconverterthatimposesashortcircuitontheinputsource,thisfusewillprovidethefollowingfunctions:

•IsolatethefaultyDC/DCconverterfromtheinputpowersourcesoasnottoaffecttheoperationofotherpartsofthesystem.

•Protectthedistributionwiringfromexcessivecurrentandpowerlossthuspreventinghazardousoverheating.

Thegalvanicisolationisverifiedinanelectricstrengthtest.Thetestvoltage(VISO)betweeninputandoutputis1500Vdcor2250Vdcfor60seconds(refertoproductspecification).Leakagecurrentislessthan1µAatnominalinputvoltage.

Generalinformation.


Characteristics ConditionsOutput

Unitmin typ max

VOi Outputvoltageadjustedsetting Tref=+25°C,VInom,IOmax,Radj80kΩ 1.00 V

VO

Outputvoltagetoleranceband IO=0.01...1.0xIOmax 0.97 1.03 V

Idlingvoltage IO=0 0.98 1.02 V

Lineregulation VImin...VImax,IOmax 11 mV

Loadregulation IO=0.01...1.0xIOmax,VInom 10 mV

VtrLoadtransientvoltagedeviation

Loadstep=0.25...0.75xIOmax,dI/dt=5A/µs,CO=150µF,VI=3.3V

140 mV

ttr Loadtransientrecoverytime 60 µs

Tcoeff Temperaturecoefficient Tref=-30...+90°C,IOmax -0.1 0 +0.1 mV/°C

ts Start-uptimeFromVIconnectedtoVO=0.9xVOI,IO=0.1...1.0xIOmax,VInom

8.5 ms

tr Ramp-uptime 0.1...0.9xVO,IO=0.1...1.0xIOmax,VInom 4 ms

tr Falltime,VOx0.1 IO=IOmax,VInom 0.2 ms

tr Falltime,VOx0.1 IO=0A,VInom 5 s

tRCoff RCshut-downtimetoVOx0.1 IO=IOmax,VInom 0.2 ms

tRCon RCstart-uptimetoVOx0.9 IO=IOmax,VInom 8 ms

tRC RCfalltime,VOx0.1...0.9 IO=0A,VInom 10 s

IO Outputcurrent 0 10 A

POmax Maxoutputpower AtVO=VOnom 10 W

Ilim Currentlimitthreshold Tref<Trefmax 15 18 22 A

VOac Outputripple 20Hz...5MHz,IOmax 10 20 mVp-p

η Efficiency-50%load IO=0.5xIOmax,VI=5V 87 %

η Efficiency-100%load IO=IOmax,VI=5V 84 85.8 %

Pd PowerDissipation IO=IOmax,VI=5V 1.6 2.0 W

Fo Switchingfrequency IO=0...1.0xIOmax 250 300 350 kHz

Isense Remotesensecurrent 8 mA

II Staticinputcurrent VI=3.0V,IO=IOmax,Tref=25°C 3.9 A

MTBF Predictedreliability Tref=40°C 6millionhours

Tref=-30...+90°C,VI=3.0...5.5Vunlessotherwisespecified.Inputfilter2x22µF,Outputfilter1x150µFTypvaluesspecifiedat:Tref=+25°CandVInom.IOmax=10A.Note:+Senseconnectedto+Out

Adjusted to 1.0 V out - Data


Output Current Derating at 5 V input

Start-Up

Outputvoltagevs.loadcurrent.

Availableloadcurrentvs.ambientairtemperatureandairflowatVin=5V.Seeconditionsonpage27.

Start-upatIO=10AresistiveloadatTref=+25°C,Vin=3.3V.StartenabledbyconnectingVin.Toptrace:outputvoltage(0.5V/div.).Bottomtrace:inputvoltage(2V/div.).Timescale:2.0ms/div.

Efficiency Power Dissipation

Output Characteristics

Adjusted to 1.0 V out - Typical Characteristics

Efficiencyvs.loadcurrentandinputvoltageatTref=+25°C

Dissipatedpowervs.loadcurrentandinputvoltageatTref=+25°C

Generalconditions:Inputfilter2x22µF,Outputfilter1x150µF

Output Current Derating at . V input

Availableloadcurrentvs.ambientairtemperatureandairflowatVin=3.3V.Seeconditionsonpage27.

60 70 80 90 100 110 1200

2

4

6

8

10

12

[°C]

[A]

2.0 m/s (400 lfm)1.5 m/s (300 lfm)1.0 m/s (200 lfm)Nat. Conv.

3.0 m/s (600 lfm) 2.5 m/s (500 lfm)


Turn Off Output Ripple

Transient with 150 µFoutputcapacitor

Outputvoltageresponsetoloadcurrentstep-change(2.5-7.5-2.5A)atTref=+25°C,Vin=3.3V.dI/dt=5A/µsToptrace:outputvoltage(ac)(100mV/div.).Bottomtrace:loadcurrent(dc)(10A/div.)Timescale:0.1ms/div.



Outputvoltageripple(20mV/div.)atTref=+25°C,Vin=3.3V,IO=10Aresistiveload.Bandwidth=5MHz.Timescale:2µs/div.

Turn-offatIO=10AresistiveloadatTref=+25°C,Vin=3.3V.Turn-offenabledbydisconnectingVin.Toptrace:outputvoltage(0.5V/div.).Bottomtrace:inputvoltage(2V/div.).Timescale:2.0ms/div.

Adjusted to 1.0 V out - Typical CharacteristicsGeneralconditions:Inputfilter2x22µF,Outputfilter1x150µF


Tref=-30...+90°C,VI=3.0...5.5Vunlessotherwisespecified.Inputfilter2x22µF,Outputfilter1x150µFTypvaluesspecifiedat:Tref=+25°CandVInom,IOmax=10A.Note:+Senseconnectedto+Out

Adjusted to 1. V out - Data


Unitmin typ max


VO







140 mV




8.5 ms











η Efficiency-50%load IO=0.5xIOmax,VI=5V 89.2 %







10 EN/LZT146048R4A©EricssonPowerModules,March2007PMB4418TWPDatasheet


Output Characteristic Start-Up





Adjusted to 1. V - Typical Characteristics

Efficiencyvs.loadcurrentandinputvoltageatTre=+25°C





60 70 80 90 100 110 1200

2

4

6

8

10

12

[°C]

[A]


3.0 m/s (600 lfm) 2.5 m/s (500 lfm)









Adjusted to 1. V - Typical CharacteristicsGeneralconditions:Inputfilter2x22µF,Outputfilter1x150µF



Unitmin typ max


VO







100 mV




8.5 ms
















II Staticinputcurrent VI=3.0V,IO=IOmax,Tref=25°C 6 A



Adjusted to 1.5 V out - Data








Adjusted to 1.5V out - Typical Characteristics






60 70 80 90 100 110 1200

2

4

6

8

10

12

[°C]

[A]


3.0 m/s (600 lfm) 2.5 m/s (500 lfm)









Adjusted to 1.5V out - Typical CharacteristicsGeneralconditions:Inputfilter2x22µF,Outputfilter1x150µF


Tref=–30…+90°C,VI=3.0...5.5Vunlessotherwisespecified.Inputfilter2x22µF,Outputfilter1x150µFTypvaluesspecifiedat:Tref=+25°CandVInom.IOmax=10A.Note:+Senseconnectedto+Out

Adjusted to 1. V out - Data


Unitmin typ max


VO







120 mV




8.5 ms












η Efficiency-100%load IO=IOmax,VI=5V 89.5 91.1 %







Efficiency

Output Current Derating at . V input Output Current Derating at 5 V input

Adjusted to 1. V - Typical Characteristics







Power Dissipation


60 70 80 90 100 110 1200

2

4

6

8

10

12

[°C]

[A]


3.0 m/s (600 lfm) 2.5 m/s (500 lfm)




Adjusted to 1. V out - Typical Characteristics










Unitmin typ max


VO







120 mV




8.5 ms



















Adjusted to .5 V out - Data






Start-upatIO=10AresistiveloadatTref=+25°C,Vin=3.3V.StartenabledbyconnectingVin.Toptrace:outputvoltage(1V/div.).Bottomtrace:inputvoltage(2V/div.).Timescale:2ms/div.


Adjusted to .5 V out - Typical Characteristics






60 70 80 90 100 110 1200

2

4

6

8

10

12

[°C]

[A]


3.0 m/s (600 lfm) 2.5 m/s (500 lfm)








Turn-offatIO=10AresistiveloadatTref=+25°C,Vin=3.3V.Turn-offenabledbydisconnectingVin.Toptrace:outputvoltage(1V/div.).Bottomtrace:inputvoltage(2V/div.).Timescale:2ms/div.

Adjusted to .5 V out - Typical CharacteristicsGeneralconditions:Inputfilter2x22µF,Outputfilter1x150µF


Tref=-30...+90°C,VI=3.8...5.5Vunlessotherwisespecified.Inputfilter2x22µF,Outputfilter1x150µFTypvaluesspecifiedat:Tref=+25°CandVI=5.0V.IOmax=10A.Note:+Senseconnectedto+Out

Adjusted to . V out - Data


Unitmin typ max

VOi Outputvoltageadjustedsetting Tref=+25°C,VI>3.8V,IOmax,Radj3.1kΩ 3.3 V

VO



Lineregulation VI=5V...VImax,IOmax 11 mV

Loadregulation IO=0.01...1.0xIOmax,VI=5V 10 mV


Loadstep=0.25...0.75xIOmax,dI/dt=5A/µs,CO=150µF,VI=5V

120 mV



ts Start-uptimeFromVIconnectedtoVO=0.9xVOadj,IO=0.1...1.0xIOmax,VI=5V

8.5 ms

tr Ramp-uptime0.1...0.9xVO,IO=0.1...1.0xIOmax,VI=5V

4 ms

tr Falltime,VOx0.1 IO=IOmax,VI=5V 0.2 ms

tr Falltime,VOx0.1 IO=0A,VI=5V 5 s

tRCoff RCshut-downtimetoVOx0.1 IO=IOmax,VI=5V 0.2 ms

tRCon RCstart-uptimetoVOx0.9 IO=IOmax,VI=5V 8 ms

tRC RCfalltime,VOx0.1...0.9 IO=0A,VI=5V 5 s






η Efficiency-100%load IO=IOmax,VI=5V 93.5 95.0 %







Output Current Derating at 5 V inputOutput Characteristic

Start-Up

Outputvoltagevs.loadcurrent. Availableloadcurrentvs.ambientairtemperatureandairflowatVin=5V.Seeconditionsonpage27.

Start-upatIO=10AresistiveloadatTref=+25°C,Vin=5V.StartenabledbyconnectingVin.Toptrace:outputvoltage(1V/div.).Bottomtrace:inputvoltage(2V/div.).Timescale:2ms/div.


Adjusted to . V out - Typical Characteristics




Turn Off

Turn-offatIO=10AresistiveloadatTref=+25°C,Vin=5V.Turn-offenabledbydisconnectingVin.Toptrace:outputvoltage(1V/div.).Bottomtrace:inputvoltage(2V/div.).Timescale:2ms/div.


Output Ripple Transient with 150 µFoutputcapacitor

Outputvoltageresponsetoloadcurrentstep-change(2.5-7.5-2.5A)atTref=+25°C,Vin=5V.dI/dt=5A/µsToptrace:outputvoltage(ac)(100mV/div.).Bottomtrace:loadcurrent(dc)(10A/div.)Timescale:0.1ms/div.


Outputvoltageresponsetoloadcurrentstep-change(2.5-7.5-2.5A)atTref=+25°C,Vin=5V.dI/dt=5A/µsToptrace:outputvoltage(ac)(100mV/div.).Bottomtrace:loadcurrent(dc)(10A/div.)Timescale:0.1ms/div.

Outputvoltageripple(20mV/div.)atTref=+25°C,Vin=5V,IO=10Aresistiveload.Bandwidth=5MHz.Timescale:2µs/div.

Adjusted to . V out - Typical CharacteristicsGeneralconditions:Inputfilter2x22µF,Outputfilter1x150µF


RCRegulatorcondition

min typ max Unit

HighlevelreferencedtoGND

OFF 1.7 5.5 V

Open ON

EMC Specification

Layout Recommendation TheradiatedEMIperformanceoftheDC/DCregulatorwillbeoptimisedbyincludingagroundplaneinthePCBareaundertheDC/DCregulator.Thisapproachwillreturnswitchingnoisetogroundasdirectlyaspossible,withimprovementstobothemissionandsusceptibility.

Operating Information

Remote Control (RC)TheRCpinmaybeusedtoturnonorturnofftheregulatorusingasuitableopencollectorfunction.TurnoffisachievedbyconnectingtheRCpintotheinputvoltage.

TheregulatorwillruninnormaloperationwhentheRCpinisleftopen.

AllPMB4000SeriesDC/DCregulatorshaveapositivere-motesensepinthatcanbeusedtocompensateformoder-ateamountsofresistanceinthedistributionsystemandal-lowforvoltageregulationattheloadorotherselectedpoint.Theremotesenselinewillcarryverylittlecurrentanddoesnotneedalargecrosssectionalarea.However,thesenselineonthePCBshouldbelocatedclosetoagroundtraceorgroundplane.Theremotesensecircuitrywillcompensateforupto10%voltagedropbetweenthesensevoltageandthevoltageattheoutputpinsfromVOnom.Iftheremotesenseisnotneededthesensepinshouldbeleftopen.

Remote Sense

RC

Vi

Module

Vi

GND



Output Voltage Adjust (Vadj)

Theoutputvoltagecanbesetbymeansofanexternalresistor,connectedtotheVadjpin.Nominaloutputvoltage0.75VissetbyleavingtheVadjpinopen.Adjustmentcanonlybemadetoincreasetheoutputvoltagesetting.

Toincrease:Connectaresistorbetween(Vadj)and(Gnd).Theoutputvoltageincreaseswithdecreasingresistorvalueasshowninthetablebelow.Notethatthemaximumoutputvoltage3.63Vmaynotbeexceeded.

Rextup(kohm)=(21.007/(VO-0.75225))-5.1

Circuitconfigurationforoutputvoltageadjust

Increase

+Out

GND

VadjLoad

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/DCregulatorsincludecurrentlimitingcircuitrythatallowsthemtowithstandcontinuousoverloadsorshortcircuitconditionsontheoutput.Thecur-rentlimitisofhick-upmodetype.Theregulatorwillresumenormaloperationafterremovaloftheoverload.Theloaddistributionsystemshouldbedesignedtocarrythemaximumoutputshortcircuitcurrentspecified.

Input And Output ImpedanceTheimpedanceofboththepowersourceandtheloadwillinteractwiththeimpedanceoftheDC/DCregulator.Itismostimportanttohavealowcharacteristicimpedance,bothattheinputandoutput,astheregulatorshavealowenergystoragecapability.Usecapacitorsacrosstheinputifthesourceinductanceisgreaterthan4.7µH.Suitableinputcapacitorsare22µF-220µFlowESRceramics.

Maximum Capacitive LoadWhenpoweringloadswithsignificantdynamiccurrentre-quirements,thevoltageregulationattheloadcanbeimprovedbyadditionofdecouplingcapacitanceattheload.ThemosteffectivetechniqueistolocatelowESRceramiccapacitorsasclosetotheloadaspossible,usingseveralcapacitorstolowerthetotalESR.Theseceramiccapacitorswillhandleshortdurationhigh-frequencycomponentsofdynamicloadchanges.Inaddition,highervaluesofcapaci-tors(electrolyticcapacitors)shouldbeusedtohandlethemid-frequencycomponents.ItisequallyimportanttousegooddesignpracticewhenconfiguringtheDCdistributionsystem.

LowresistanceandlowinductancePCBlayoutsandca-blingshouldbeused.Rememberthatwhenusingremotesensing,allresistance(includingtheESR),inductanceandcapacitanceofthedistributionsystemiswithinthefeedbackloopoftheregulator.Thiscanaffectontheregulatorscom-pensationandtheresultingstabilityanddynamicresponseperformance.

VerylowESRandhighcapacitancemustbeusedwithcare.A“ruleofthumb”isthatthetotalcapacitancemustneverexceedtypically500-700µFifonlylowESR(<2mΩ)ce-ramiccapacitorsareused.Ifmorecapacitanceisneeded,acombinationoflowESRtypeandelectrolyticcapacitorsshouldbeused,otherwisethestabilitywillbeaffected.

ThePMB4000seriesregulatorcanacceptupto5mFofcapacitiveloadontheoutputatfullload.Thisgives<500µF/AofIO.Whenusingthatlargecapacitanceitisimportanttoconsidertheselectionofoutputcapacitors;theresultingbehaviorisacombinationoftheamountofcapacitanceandESR.

Minimum Required External Capacitors

Externalinputcapacitorsarerequiredtoincreasethelifetimeoftheinternalcapacitorsandtofurtherreducetheinputripple.Aminimumof44µF external input capacitanceµF external input capacitanceFexternalinputcapacitancewithlowESRshouldbeadded.

Aminimumof150µF external output capacitance , lowµF external output capacitance , lowFexternaloutputcapacitance,lowESR,shouldbeaddedfortheconvertertooperateproperlyatfullload.



Parallel Operation

ThePMB4000SeriesDC/DCregulatorscanbeconnectedinparallelwithacommoninput.Parallelingisaccomplishedbyconnectingtheoutputvoltagepinsdirectlyandusingaloadsharingdeviceontheinput.Layoutconsiderationsshouldbemadetoavoidloadimbalance.Formoredetailsonparalleling,pleaseconsultyourlocalapplicationssupport.

Input Undervoltage LockoutThePMB4000SeriesDC/DCregulatorsareequippedwithalockoutfunctionforlowinputvoltage.Whentheinputvoltageisbelowtheundervoltagelockoutlimitoftheregulatoritwillshutoff.Whentheinputvoltageincreasesabovethelockoutleveltheregulatorwillturnon.

AcombinationoflowESRandoutputcapacitanceexceeding5mFcancausetheregulatorintoovercurrentprotectionmode(hick-up)duetohighstartupcurrent.TheoutputfiltermustthereforebedesignedwithoutexceedingtheabovestatedcapacitancelevelsiftheESRislowerthan30-40mΩ.


Thermal Considerations

GeneralThePMB4000SeriesDC/DCregulatorsaredesignedtooperateinavarietyofthermalenvironments,howeversufficientcoolingshouldbeprovidedtohelpensurereliableoperation.Heatisremovedbyconduction,convectionandradiationtothesurroundingenvironment.Increasedairflowenhancestheheattransferviaconvection.Propercoolingcanbeverifiedbymeasuringthetemperatureatthereferencepoint(Tref).

Calculation of ambient temperature

Byusingthethermalresistancethemaximumallowedambienttemperaturecanbecalculated.

A.Thepowerlossiscalculatedbyusingtheformula ((1/η)-1)×outputpower=powerlosses. η=efficiencyofregulator.Example:95%=0.95

B.FindthevalueofthethermalresistanceRthTref-Ainthedia-grambyusingtheairflowspeedatthemodule.Takethether-malresistance×powerlosstogetthetemperatureincrease.

Thermalresistancevs.airspeedmeasuredattheregulator.

C.Maxallowedcalculatedambienttemperatureis:MaxTrefofDC/DCregulator-temperatureincrease.

Example:5Vinput,1.8Voutputat1m/s,fullload:

B.2W×9°C/W=18°C

C.115°C-18°C=maxambienttemperatureis97°C

Therealtemperaturewillbedependentonseveralfactors,likePCBsizeandtype,directionofairflow,airturbulenceetc.Itisrecommendedtoverifythetemperaturebytesting.

A.((1/0.9)-1)×18W=2W

ThePMB4000thermaltestingisperformedwiththeproductmountedonanFR4board254× 254 mm with 8× 254 mm with 8254mmwith8layersof35µm copper. Airflow is perpendicular to the Tµm copper. Airflow is perpendicular to the Tmcopper.AirflowisperpendiculartotheTrefside.

25m

m[1

in.]

airflow

Test board

choke


ThePMB4000seriesDC/DCregulatorsareintendedformanualorwavesoldering.Theplasticbodyofthepinconnectorsresistssolderingheatforlimitedtimeupto260°C..Whenhandsoldering,careshouldbetakentoavoiddirectcontactbetweenthehotsolderingirontipandthepinsformorethanafewsecondsinordertoavoidmeltingoftheplastic.

Soldering Information

Delivery Package InformationThePMB4000seriesregulatorsaredeliveredinantistatictrayswithJedecstandardouterdimensions.Traycapacity25pcs.Eachboxcontains4trays.

ReliabilityThe Mean Time Between Failure (MTBF) of the PMB 4000seriesDC/DCregulatorfamilyiscalculatedtobegreaterthan6millionhoursatfulloutputpowerandareferencetemperatureof+40°CusingTelCordiaSR332.

Compatibility with RoHS requirementsTheproductsarecompatiblewiththerelevantclausesandrequirementsoftheRoHSdirective2002/95/ECandhaveamaximumconcentrationvalueof0.1%byweightinhomogeneousmaterialsforlead,mercury,hexavalentchromium,PBBandPBDEandof0.01%byweightinhomogeneousmaterialsforcadmium.

ExemptionsintheRoHSdirectiveutilizedinEricssonPowerModulesproductsinclude:•Leadinhighmeltingtemperaturetypesolder(usedtosolderthedieinsemiconductorpackages)•Leadinglassofelectronicscomponentsandinelectronicceramicparts(e.g.fillmaterialinchipresistors)•Leadasanalloyingelementincopperalloycontainingupto4%leadbyweight(usedinconnectionpinsmadeofBrass)


Sales Offices and Contact Information

CompanyHeadquarters EricssonPowerModulesABLMEricssonsväg30SE-12625StockholmSweden

Phone:+46-8-568-69620Fax:+46-8-568-69599

China EricssonSimtekElectronicsCo.33FuhuaRoadJiadingDistrictShanghai201818China

Phone:+86-21-5990-3258Fax:+86-21-5990-0188

NorthandSouthAmerica EricssonInc.PowerModules6300LegacyDr.Plano,TX75024USA

Phone:+1-972-583-5254+1-972-583-6910Fax:+1-972-583-7839

HongKong(AsiaPacific) EricssonLtd.12/F.DevonHouse979King’sRoadQuarryBayHongKong

Phone:+852-2590-2453Fax:+852-2590-7152

Italy,Spain(Mediterranean) EricssonPowerModulesABViaCadorna7120090Vimodrone(MI)Italy

Phone:+39-02-265-946-07Fax:+39-02-265-946-69

Allothercountries ContactCompanyHeadquartersorvisitourwebsite:www.ericsson.com/powermodules

Informationgiveninthisdatasheetisbelievedtobeaccurateandreliable.Noresponsibilityisassumedfortheconsequencesofitsusenorforanyinfringementofpatentsorotherrightsofthirdpartieswhichmayresultfromitsuse.NolicenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofEricssonPowerModules.TheseproductsaresoldonlyaccordingtoEricssonPowerModules’generalconditionsofsale,unlessotherwiseconfirmedinwriting.Specificationssubjecttochangewithoutnotice.

Germany,Austria EricssonPowerModulesABMühlhauserWeg1885737IsmaningGermany

Phone:+49-89-9500-6905Fax:+49-89-9500-6911

Japan EricssonPowerModulesABKimuraDainiBuilding,3FL.3-29-7Minami-Oomachi,Shinagawa-kaTokyo140-0013Japan

Phone:+81-3-5733-5107Fax:+81-3-5753-5162

DC/DC regulator Input 3.0 - 5.5 V Output 10 A

Documents