171930601 WURTH | Alldatasheet
Document overview
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- PDF pages: 37
Technical content
Datasheet sections
- 1 PINOUT
- 2 ORDERING INFORMATION
- 3 SALES INFORMATION
- 4 ABSOLUTE MAXIMUM RATINGS
- 5 OPERATING CONDITIONS
- 6 THERMAL SPECIFICATIONS
- 7 ELECTRICAL SPECIFICATIONS
- 8 RoHS, REACh
- 9 PACKAGE SPECIFICATIONS
- 10 NOTES
- 11 TYPICAL PERFORMANCE CURVES
- 11.1 EMI:RadiatedandConductedEmissions
- 11.1.1 TestSetup
- 11.1.2 RadiatedandConductedEmissions
- 11.2 DCPerformanceCurves
- 11.2.1 Efficiency12Vin
- 11.2.2 Efficiency24Vin
- 11.2.3 ThermalDerating12Vin
- 11.2.4 ThermalDerating24Vin
- 11.2.5 OperatingRange
- 11.2.6 LoadRegulation
- 11.2.7 LineRegulation
- 12 BLOCK DIAGRAM
- 13 CIRCUIT DESCRIPTION
- 14 DESIGN FLOW
- 14.1 STEP1 SettingTheOutputVoltage(V OUT)
- 14.2 STEP2 SelectTheInputCapacitor(C IN)
- 14.3 STEP3 SelectTheOutputCapacitor(C OUT)
- 14.4 STEP4 SelectTheFeed-ForwardCapacitor(C FF)
- 15 MODES OF OPERATION
- 16 OUTPUT VOLTAGE RIPPLE
- 17 PROTECTION FEATURES
- 17.1 OverCurrentProtection(OCP)andShortCircuitProtection(SCP)
- 17.2 OverTemperatureProtection(OTP)
- 17.3 InputUndervoltageLockout(UVLO)
- 17.4 Enable/AdjustableSoft-Start
- 18 DESIGN EXAMPLE
- 18.1 Layout
- 18.2 Schematic
- 18.3 BillofMaterials
WPME-VDMM -VariableStepDownMicroModule 3.5V - 36V Input / 0.3A Output / 1V - 6V Output
DESCRIPTION
The VDMM 171930601 MagI 3C power module provides a fully integrated DC-DC converter including the switching regulator IC with integrated MOSFETs, controller, compensation and shielded inductor in one package. The 171930601 offers high efficiency and delivers up to 0.3A of output current. It operates with an input voltage from 3.5V to 36V and is designed for a small solutionsize. TheMicroModulemaintainshighefficiencythroughout theoutputcurrentrangebyautmoaticallytransitioning betweenoperatingmodesbasedontheloaddemands. The171930601isavailableinanLGA-8EPpackage (5x2.5x1.8mm). This module has integrated protection circuitry that guards against thermal overstress with thermal shutdown and protects against electrical damage using overcurrent, short-circuit and undervoltage protections. TYPICAL APPLICATIONS
- Testandmeasurement
- Industrialcontrol
- HVACandbuildingcontrol
- Sensors TYPICAL CIRCUIT DIAGRAM
FEATURES
- Peakefficiencyupto87%
- Currentcapabilityupto0.3A
- Inputvoltagerange: 3.5Vto36V
- Outputvoltagerange: 1Vto6V
- 12.5µAtypicalquiescentcurrent
- Integratedshieldedinductor
- Fixedswitchingfrequency: 1.2MHz
- Currentmodecontrol
- Synchronousoperation
- Undervoltagelockout
- Internalsoft-start
- Adjustablesoft-start
- Powergoodindicator
- Thermalshutdown
- Short-circuitprotection
- Cycle-by-cyclecurrentlimit
- RoHSundREAChcompliant
- Ambienttemp. range: -40°Cto105°C
- No output current derating up to 85°C ambient temperature
- Operatingjunctiontemp. range: -40°Cto125°C
- ComplieswithEN55032classBradiatedandconducted emissionsstandards VIN VOUT EN/SS PG CIN COUT RFBT FB PGND VIN VOUT 4, 5 RFBB CFF PGND EP/9 Module GND GND DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 1
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1 PINOUT
7 PGND
5 VOUT
Figure1:Pinout. Table1:Markingdescription. MARKING DESCRIPTION WE Logo
171930601 OrderCode
- YYWWXXXX Pinoneindicator,year,weekandlot number Table2:Pindescription. SYMBOL NUMBER TYPE DESCRIPTION PG 1 Output Powergoodflagpin. Thisopendrainoutputassertslowiftheoutput voltageislowerthan90%orhigherthan110%ofthesetvalue. Apull-up resistorof100k Ω isrecommendedifthisfunctionisused. EN/SS 2 Input Enablepin. Settingthispinhighenablesthedevice,whilesettingthispin lowshutsdownthedevice. Thispinmustnotbeleftfloating. Aninternal soft-startof2mshasalreadybeenimplementedintheMicroModule. For anexternalsoft-startfunction,anexternalresistor(R SS)andcapacitor(C SS) shouldbeused. VIN 3 Power Inputvoltagepin. PlacetheinputcapacitorascloseaspossibletoVINand PGND. VOUT 4,5 Power Outputvoltagepin. PlaceoutputcapacitorsascloseaspossibletoVOUT andPGND.Forthermalperformance,usecopperplane(s)atthispin. NC 6 Pinisnotinternallyelectricallyconnected. PGND 7 Power Powergroundpin. Thispinmustbeconnectedtothegroundplaneandto theexposedpadforthebestthermalperformance. FB 8 Input Feedbackpin. Thispinmustbeconnectedtotheexternalresistordivider (betweenVOUTandPGND)toadjusttheoutputvoltage. Thetrace betweenVOUT,FBandthroughtheexternalresistordividershouldbekept asshortandneartothemoduleaspossible. PGND EP Exposed Pad Exposedpad. ThispiniselectricallyconnectedinternallytoPGND.Itis recommendedtoconnectthispadtothegroundplanefordeviceheat dissipation. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 4
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2 ORDERING INFORMATION
Table3:Orderinginformation. ORDER CODE SPECIFICATIONS PACKAGE PACKAGING UNIT 171930601 0.3A/1V-6VVoutversion LGA-8EP 7”Reel(1000pieces) 178930601 0.3A/1V-6VVoutversion EvalBoard Boxwith1piece
3 SALES INFORMATION
Table4:Packagespecifications. SALES CONTACT WürthElektronikeiSosGmbH&Co.KG EMCandInductiveSolutions Max-Eyth-Str. 1 74638Waldenburg Germany Tel. +49(0)79429450 www.we-online.com/powermodules Technicalsupport: powermodules@we-online.com DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 5
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4 ABSOLUTE MAXIMUM RATINGS
Caution: Exceedingthelistedabsolutemaximumratingsmayaffectthedevicenegativelyandmaycausepermanentdamage. Table5:Absolutemaximumratings. SYMBOL PARAMETER LIMIT UNITMIN(1) MAX(1) VIN Inputpinvoltage -0.3 40 V VOUT Outputpinvoltage -0.3 40 V FB Feedbackpinvoltage -0.3 6.2 V EN Enablepinvoltage -0.3 40 V PG Powergoodpinvoltage -0.3 6.2 V IPG PowerGoodPinCurrent — 8 mA Tstorage Assembled,non-operatingstoragetemperature -40 125 °C
5 OPERATING CONDITIONS
Operatingconditionsareconditionsunderwhichthedeviceisintendedtobefunctional. AllvaluesarereferencedtoGND. MINandMAXlimitsarevalidfortherecommendedambienttemperaturerangeof-40°Cto105°C. Table6:Operatingconditions. SYMBOL PARAMETER MIN(1) TYP(3) MAX(1) UNIT VIN Inputvoltage 3.5 — 36 V VOUT Outputvoltage 1 — 6 V Ta Ambienttemperaturerange -40 — 105(2) °C Tjop Junctiontemperaturerange -40 — 125 °C Iout Nominaloutputcurrent — — 0.3(4) A
6 THERMAL SPECIFICATIONS
Caution: Typicalvaluesrepresentthestatisticallyutmostprobablevaluesatthefollowingconditions:V IN =24V,VOUT =5V,CIN =4.7µF, COUT =47µF,T A =25°Cunlessotherwisenoted. Table7:Thermalspecifications. SYMBOL PARAMETER TYP(3) UNIT ΘJA Junction-to-ambientthermalresistance (4) 55 K/W ΘJC Junction-to-case(top)thermalresistance (4) 40 K/W TSD Thermalshutdown,rising 155 °C Thermalshutdown,hysteresis 25 °C DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 6
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7 ELECTRICAL SPECIFICATIONS
Caution: MINandMAXlimitsarevalidfortherecommendedambienttemperaturerangeof-40°Cto105°C.Typicalvaluesrepresents statisticallytheutmostprobablevaluesatthefollowingconditions: V IN =24V,V OUT =5V,C IN =4.7µFceramic,C OUT =47µF ceramic,TA =25°Cunlessotherwisenoted. Table8:Electricalspecificationspart1. SYMBOL PARAMETER TEST CONDITIONS MIN(1) TYP(3) MAX(1) UNIT OUTPUT VOLTAGE VFB Referencevoltage 0.739 0.75 0.761 V IFB Feedbackinputbias current -0.1 — 0.1 nA VOUT Lineregulation VIN =8Vto36V,I OUT =0.3A — 0.06 — % Loadregulation 0.03A≤ ILOAD ≤ 0.3A — 1.35 — % Outputvoltageripple IOUT =0.03A,20MHzBWL — 10 — mVpp IOUT =0.3A,20MHzBWL — 7 — mVpp OUTPUT CURRENT IOUT Outputcurrent — — 0.3 A ICL-HS Highsideswitchcurrent limit 1 1.3 — A SWITCHING FREQUENCY fSW Switchingfrequency — 1.2 — MHz ENABLE AND UNDERVOLTAGE LOCKOUT VUVLO VIN undervoltagethreshold VIN increasing 2.7 2.8 2.9 V VIN decreasing 2.6 2.7 2.8 V VEN/SS EN/SSthreshold Enablelogichigh 2.5 — 36 V Enablelogiclow — — 0.3 V IEN/SS EN/SSpininputcurrent VIN =36V,Enable=high — 0.1 0.3 µA VIN =36V,Enable=low -0.1 — 0.1 µA SOFT-START tSS Soft-starttime TA =25°C(risingedgeto95%of VOUT) — 2 — ms EFFICIENCY η Efficiency VIN =5V,V OUT =3.3V,I OUT =0.3A — 87 — % VIN =12V,V OUT =5V,I OUT =0.3A — 87 — % VIN =24V,V OUT =5V,I OUT =0.3A — 83 — % INPUT QUIESCENT AND SHUTDOWN CURRENT ISD Shutdowncurrent VIN =12V,V EN =low — 1.7 — µA VIN =24V,V EN =low — 2.8 — µA IIN-NL Noloadinputcurrent VOUT =3.3V — 15.3 — µA IQ Quiescentcurrent VIN =12V,Enable=high — 12.5 — µA VIN =24V,Enable=high — 13.5 — µA OUTPUT CAPACITANCE COUT_MAX Outputcapacitance Thesevaluesareabsolute. Practicalcapacitorvaluesneedto havederatingaspectsconsidered. 20 47 150 µF DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 7
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8 RoHS, REACh
Table9:RoHS,REACh. RoHS directive Directive2011/65/EUoftheEuropeanParliamentandtheCouncil ofJune8th,2011ontherestrictionoftheuseofcertainhazardous substancesinelectricalandelectronicequipment. REACh directive Directive1907/2006/EUoftheEuropeanParliamentandthe CouncilofJune1st,2007regardingtheRegistration,Evaluation, AuthorizationandRestrictionofChemicals(REACh).
9 PACKAGE SPECIFICATIONS
Table10:Packagespecifications. ITEM PARAMETER TYP(3) UNIT MoldCompound UL94V-0 — — Weight — 0.04341 g
10 NOTES
(1) MinandMaxlimitsare100%productiontestedat25°C.Limitsovertheoperatingtemperaturerangeareguaranteed throughcorrelationusingStatisticalQualityControl(SQC)methods. (2) Dependingonheatsinkdesing,numberofPCBlayers,copperthicknessandairflow. (3) Typical numbers are valid at 25°C ambient temperature and represent statistically the utmost probable values assumingaGaussiandistribution. (4) Measuredonthe178930601evaluationboard,a80x80mmtwolayerboardwith35µm(1ounce)copper. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 8
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11 TYPICAL PERFORMANCE CURVES
Ifnototherwisespecified,thefollowingconditionsapply: V IN =24V,C IN =4.7µFX7R50Vceramic,C OUT =47µFX5Rceramic, CFF =220pF,T AMB =25°C.
11.1 Radiated and Conducted Emissions EN55032 (CISPR-32) Class B Compliance
The171930601MicroModuleistestedwithastandardEMCconfguration(1mwirebetweenthemoduleandtheload)to give more realistic information about implementation in applications. The test setup is based on CISPR16 with the limit values from CISPR-32. Measured with module on an evaluation board 178930601 in a fully anechoic room (FAR) at 3m antennadistance.
11.1.1 TEST SETUP
Inputwirelength:
- RadiatedEmission: 160cm(80cmHorizontal+80cmVertical)
- ConductedEmissions: 80cm Outputwirelength:
- Longwire(withinputfilter): 1m DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 9
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11.1.2 Radiated and Conducted Emissions
0.15 1 10 30 Frequency in MHz -10 Conducted Emissions in dBµV EN55032 Class B Quasi Peak Limit EN55032 Class B Average Limit Quasi-Peak Average Quasi-Peak Figure2:171930601conductedemissions(3mantennadistance)V IN =24V,V OUT =5V,I LOAD =0.3Awithinputfilter CF =4.7µF,L F =1µH. 30 100 1000 Frequency in MHz -10 Radiated Emissions in dBµV/m EN55032 Class A Limit EN55032 Class B Limit Horizontal Vertical Horizontal Figure3:171930601radiatedemissions(3mantennadistance)V IN =24V,V OUT =5V,I LOAD =0.3Awithinputfilter CF =4.7µF,L F =1µH. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 10
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11.2 DC PERFORMANCE CURVES
11.2.1 Efficiency 12V IN
100Efficiency in % Vout = 5V Vout = 1.8V Vout = 3.3V Vout = 1.5V Vout = 2.5V Vout = 1.2V Figure4:171930601efficiencyV IN =12V,T A =25°C.
11.2.2 Efficiency 24V IN
100Efficiency in % Vout = 5V Vout = 1.8V Vout = 3.3V Vout = 1.5V Vout = 2.5V Vout = 1.2V Figure5:171930601efficiencyV IN =24V,T A =25°C. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 11
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11.2.3 Thermal Derating 12V IN
0 10 20 30 40 50 60 70 80 90 100 110 120 130 Ambient Temperature in °C 0.05 0.10 0.15 0.20 0.25 0.30 0.35Output Current in A Vout = 5V Vout = 3.3V Vout = 5V Figure6:171930601outputcurrentthermalderatingV IN =12V, ΘJA =55K/W.
11.2.4 Thermal Derating 24V IN
0 10 20 30 40 50 60 70 80 90 100 110 120 130 Ambient Temperature in °C 0.05 0.10 0.15 0.20 0.25 0.30 0.35Output Current in A Vout = 5V Vout = 3.3V Vout = 5V Figure7:171930601outputcurrentthermalderatingV IN =24V, ΘJA =55K/W. Note: Boththermalderatinggraphsweremeasuredonthe178930601EvaluationBoard(80x80mmtwolayerboardwith 35µm(1ounce)copper). PleaseseeT A limitsin OPERATINGCONDITIONS. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 12
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11.2.5 Operating Range
Figure8:171930601outputvoltgevs. maximuminputvoltage. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 13
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11.2.6 LOAD REGULATION
-1.0 -0.5 0.5 1.0 1.5 2.0 Output Voltage Deviation in % Vout = 5V Vout = 1.8V Vout = 3.3V Vout = 1.5V Vout = 2.5V Vout = 1.2V Figure9:171930601loadregulationV IN =24V,V OUT =3.3V,T A =25°C.
11.2.7 LINE REGULATION
-1.0 -0.75 -0.5 -0.25 0.25 0.5 0.75 1.0 Output Voltage Deviation in % Vout = 5V, Iout = 0.03A Vout = 3.3V, Iout = 0.3A Vout = 3.3V, Iout = 0.03A Vout = 5V, Iout = 0.3A Figure10:171930601lineregulationV OUT =3.3V,I OUT =0.3A,T A =25°C. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 14
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12 BLOCK DIAGRAM
V EA VIN PGND EN SS FB VOUT EP R FBT R FBB V IN COMP SS OSCILLATOR OCP detect OCP ref V OUT SS OTP SS UVLO PG C F F C OUT C IN SS Slope Comp PWM Modulator Drivers Logic circuitries µH Figure11:171930601blockdiagram.
13 CIRCUIT DESCRIPTION
The MagI3C 171930601 MicroModule is a fully integrated DC-DC power supply including the switching regulator with integratedMOSFETs,controllerandcompensation,aswellastheshieldedinductorinonepackage. Thecontrolschemeis basedonacurrentmode(CM)regulationloop. The VOUT of the regulator is divided by the feedback resistor network RFBT and RFBB and fed into the FB pin. The error amplifiercomparesthissignalwiththeinternal0.75Vreference. Theerrorsignalisamplifiedandcontrolstheon-timeofa fixedfrequencypulsewidthgenerator. ThissignaldrivesthepowerMOSFETs. The current mode architecture features a constant frequency during load steps. Only the on-time is modulated. It is internallycompensatedandstablewithlowESRoutputcapacitorsandrequiresnoexternalcompensationnetwork. Thisarchitecturesupportsfasttransientresponseandverysmalloutputvoltageripples(<10mV p-p)areachieved. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 15
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14 DESIGN FLOW
Thenextfoursimplestepswillshowhowtoselecttheexternalcomponentstodesignthe171930601intoanapplication. Essential Steps 1. Setoutputvoltage 2. Selectinputcapacitor 3. Selectoutputcapacitor 4. Selectfeed-forwardcapacitor Figure12:Designflowschematic. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 16
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14.1 STEP 1 Setting The Output Voltage (VOUT)
TheoutputvoltageisselectedwithanexternalresistordividerbetweenV OUT andGND(seecircuitbelow). Thevoltageacross thelowerresistorofthedividerispröutputvoltageadjustmentrangeisfrom1Vto6V.Theoutputvoltagecanbecalculated accordingtothefollowingformula: V OUT = V REF · ( RFBT RFBB + 1) (1) Oneresistormustbechosenandthentheotherresistorcanbecalculated. Forexample,ifR FBT =64.9kΩ thentheresistance valueofthelowerresistorinthefeedbacknetworkisindicatedinthetablebelowforcommonoutputvoltages. Table11:OutputvoltageselectionwithR FBT =64.9kΩ. VOUT PGND 4, 5 VOUT RFBT MODULE CFF RFBB FB Figure13:Outputvoltageschematic. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 17
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14.2 STEP 2 Select The Input Capacitor (CIN)
Anexternalinputcapacitorisrequiredtoprovidethehighinputpulsecurrent. Theexternalinputcapacitormustbeplaced as close as possible to the VIN and PGND pins. For this MagI3C MicroModule, it is recommended to use an MLCC (multi-layer ceramic capacitor) with 4.7µF. Attention must be paid to the voltage, frequency, temperature derating and thermalclassoftheselectedcapacitor.
14.3 STEP 3 Select The Output Capacitor (COUT)
Theoutputcapacitorshouldbeselectedinordertominimizetheoutputvoltagerippleandtoprovideastablevoltageatthe output. Italsoaffectstheloopstability. AnexternalMLCCof47µFisrecommendedforallapplicationconditions. Attention mustbepaidtothevoltage,frequency,temperaturederatingandthermalclassoftheselectedcapacitor. Ingeneral,theoutputvoltageripplecanbecalculatedusingthefollowingequation: V OUTripple = ∆IL · ESR + ∆IL · ( 1 8 · fSW · COUT ) (2) whereΔIL istheinductorcurrentrippleandcanbecalculatedwiththefollowingequation: ∆IL = V OUT · (V IN − V OUT) fSW · L · V IN (3) Time in µsec 4.994 4.996 4.998 5.000 5.002 5.004 5.006 5.008Voltage in V Figure14:171930601outputvoltagerippleV IN =24V,V 5V,IOUT =0.3A,C OUT =33µF. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 18
WPME-VDMM -VariableStepDownMicroModule Time in µsec 4.994 4.996 4.998 5.000 5.002 5.004 5.006 5.008Voltage in V Figure15:171930601outputvoltagerippleV IN =24V,V 5V,IOUT =0.3A,C OUT =68µF. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 19
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14.4 STEP 4 Select The Feed-Forward Capacitor (CFF)
The 171930601 MagI3C MicroModule allows for the selection of a feed forward capacitor, CFF. To maintain the same transientresponsefordifferentC FF values,thetopfeedbackresistorR FBT shouldalsobeadjusted. Theintegratedinductor hasavalueof4.7µH.TheequationusedtodetermineC FF andRFBT isasfollows: CFF = √COUT · L RFBT (4) ACFF of220pFhasbeenevaluatedexperimentallyasavaluewithsuitableefficiencyandtransientcharacteristicsformost applications. The figures below show the transient behavior of the 171930601 in response to a load transition from 0A to 0.3A using therecommendedC FF =220pF,aswellasothervaluesofC FF. Time in ms -0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 Output Voltage Deviation in V 0.05 0.10 0.15 0.20 0.25 0.30 0.35 Output Current in A Cff = 100pF Cff = 270pF Cff = 150pF Cff = 330pF Cff = 220pF Iout Figure16:171930601loadtransientV IN =24V,V OUT =5Vfrom0.03Ato0.3A,T A =25°C. This behavior is valid only for this test under the specified conditions and must be verified in the real application. The recommendedCFF valueof220pFwillworkformostapplications. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 20
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15 MODES OF OPERATION
The 171930601 MicroModule has two different modes of operation and the transition takes place automatically depending on the load current value. Under light load conditions, the module operates in PFM mode where the MicroModule runs at a lower switching frequency to reduce the current consumption, which leads to achieving a higher efficiency. The PFM control is achieved by creating a single pulse to turn on the high side switch while monitoring the inductorcurrent. Thehighsideswitchiskeptonuntiltheinductorcurrenthitsapresetvalue(I PFM). AfterreachingI PFM,thehighsideswitchisturnedoffandthelowsideswitchturnson. Theinductorcurrentdecreasesuntil itreacheszero. Whentheinductorcurrentreacheszero, bothswitchesareturnedoff(idletime)andtheoutputcapacitor solely supplies the load with energy. While the energy is supplied to the load, the output voltage starts to drop. The MicroModule monitors the output voltage ripple value and when it hits a certain limit, while the two switches are off, anotherpulseisinitiatedandthecyclerepeats. Whentheloadcurrentincreases,theidletimedecreasesandtheswitching frequencyincreasesuntilthenominalswitchingfrequencyisreachedandtheMicroModulegoestothePWMmode. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 21
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16 OUTPUT VOLTAGE RIPPLE
IfthemoduleisworkingPWMmode,therippleisverylowanditalwayshasthesamefrequencyastheinternaloscillator (1.2). IftheloadcurrentislowenoughtobeinthePFMmodeofoperationthentheoutputvoltageripplewillbehigherand thefrequencylowerthanthenominalswitchingfrequency(seefiguresbelow). 0 2 4 6 8 10 12 14 16 18 20 Time in µsec Voltage in mV Figure17:171930601outputvoltagerippleV IN =24V,V OUT =5V,I OUT =0.03A. Time in µsec Voltage in mV Figure18:171930601outputvoltagerippleV IN =24V,V OUT =5V,I OUT =0.3A. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 22
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17 PROTECTION FEATURES
17.1 Over Current Protection (OCP) and Short Circuit Protection (SCP)
The overcurrent and short circuit protections are implemented using a cycle-by-cycle scheme. The high-side switch currentissensedandwhenthecurrentexceedsthehighsidelimitvalue(1.3Atyp.),thehigh-sideswitchisturnedoffand thelow-sideswitchisturnedon,untilthecurrenthitsthelow-sideswitchlimitvalue(1Atyp.). Whenthelow-sideswitch limitisreached,thehighsideswitchisturnedonagainandthecyclerepeatsitself. Inaddition,afrequencyfoldbackcircuit is enabled to reduce the high- and low-side current limits, further reducing the rms current and heat dissipation through theMicroModule. ThefiguresbelowshowstheoperationoftheconverterunderOCPandSCPconditions. Figure19:171930601inductorcurrentandfrequencyfoldback. Time in sec 10Output Voltage in V -0.20 -0.05 0.10 0.25 0.40 0.55 0.70 0.85 1.00 1.15 1.30 Output Current in A Output Voltage Output Current Output Voltage Figure20:171930601OCPV IN =24V,V OUT =5V. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 23
WPME-VDMM -VariableStepDownMicroModule 0 20 40 60 80 100 120 140 160 180 200 Time in msec 8Output Voltage in V Figure21:171930601SCPV IN =24V,V OUT =5V,shortcircuitcondition. Notethatanoutputvoltageovershootisexpecteduponthereturntonormaloperationafteranovercurrentorshortcircuit fault. Thisisduetothesoft-startfuncitonalityonlyactivingwhenthemodulefirstturnson.
17.2 Over Temperature Protection (OTP)
Thermal protection helps prevent catastrophic failures due to accidental device overheating. The junction temperature of the 171930601 MagI3C MicroModule should not be allowed to exceed its maximum ratings. Thermal protection is implementedbyaninternalthermalshutdowncircuit,whichactivateswhenthejunctiontemperaturereaches160°C(typ). Under the thermal shutdown condition both MOSFETs remain off causing VOUT to drop. When the junction temperature fallsbelow150°Ctheinternalsoft-startisreleased,V OUT risessmoothly,andnormaloperationresumes.
17.3 Input Undervoltage Lockout (UVLO)
The device incorporates input undervoltage lockout (UVLO) to protect from unexpected behavior at input voltages below therecommendedvalues. ThethresholdsoftheUVLOareindicatedinthe ELECTRICALSPECIFICATION. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 24
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17.4 Enable / Adjustable Soft-Start
The171930601MagI 3CMicroModulecombinestheenableandsoft-startfunctionsintoasinglepinandisenabledbysetting thepinEN/SShigh. Enablingthedevicesachievesa2mssoft-starttime. AftersettingEN/SShigh,themodulepreparesfor operation. Once prepared, the module begins switching and the internal soft-start regulates the output voltage rise until thedesiredoutputvoltageismetallowingnormaloperationtotakeplace. Adjustablesoft-startpermitstheregulatortoslowlyramptoitssteadystateoperatingpointafterbeingenabled,thereby reducinginrushcurrentfromtheinputsupplyandslowingtheoutputvoltagerisetimetopreventovershoot. Uponturn-on, afterallUVLOconditionshavebeenpassed,aninternalcircuitslowlyrampstheEN/SSinputtoimplementtheinternalsoft- start. Ifthepresetsoft-starttimeisenoughfortheapplication,theEN/SSshouldbesettohigh. Longersoft-startperiods areachievedbyaddinganexternalcapacitorandaresistortothispinasshowninthefigurebelow: VEN PGND EN/SS RSS MODULE CSS Figure22:171930601externalsoft-startschematic. Thefollowingequationcanbeusedtosetthesoft-starttime: TSS = CSS · RSS · ln( V EN V EN − 1.45) (5) DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 25
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18 DESIGN EXAMPLE
Thedesignexampleshowsapossiblesolutionfor24Vto5Vwithamax. Ioutof0.3A.Allofthenecessarycomponentsto fulfilltherequirementsoftheCISPR32EMIconducted-andradiated-emissionstestsareincludedinthedesignexample. ItpassestheconductedemissionsclassBwith0.8minputand1moutputlinesandpasseshteradatedemissionsclassB inaFARat3mmeasurementdistancewith0.8mhorizontal,0.8mverticalinputand1mhorizontaloutputlines. Inthefinal application,filtercomponentsmaybeomitteddependingontherequirements.
18.1 Layout
Figure23:171930601layoutrecommendation. Thepictureaboveshowsapossiblelayoutforthe171930601MagI 3CMicroModule. Nevertheless,somerecommendations shouldbefollowedwhendesigningthelayout: 1. TheinputandoutputcapacitorshsouldbeplacedascloseaspossibletotheVINandVOUTpinsofthedevice. 2. ThefeedbackresistordividershouldbeplacedascloseaspossibletotheFBpin. 3. Avoidplacingviasinanyofthepadsforthemodulethesmallsizeofthepads,significantamountsofsoldercanbe pulledthroughtheviasduringheating,resultinginincompleteconnectionsbetweenthemoduleandboard. 4. Theambienttemperatureofthisdesignexampleislimitedto85°CduetotheX5Routputcapacitor. Forusageabove 85°C,twoX7R22µF(885012209006)capacitorsarerecommendedtoreplacethesingleX5Rcapacitor. 5. ToavoiddirectcouplingoftheDC/DCconverter´sE-andH-fieldsintoconnectors,filtercomponentsandcables,the modulemustbeplacedasfarawayfromthesecomponentsaspossible. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 26
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18.2 Schematic
C Cin C Cout R Rfbt FB PGND V IN V OUT R Rfbb C Cff PGND EP Module GND GND C Cf L Lf U Figure24:171930601designexampleschematic.
18.3 Bill of Materials
Table12:171930601designexamplebillofmaterials. Designator Description Function Quantity Order Code Manufacturer U1 MagI3CMicroModule Powersupply 1 171930601 WE Filterinductor,1µH,MAPIfamily, ISAT =3.4A,I R =1.4A Inputfilter 1 74438313010 WE C1,C2 Ceramicchipcapacitor4.7µF, 50V,X7R,1210 Inputfilter 1 885012209048 WE Ceramicchipcapacitor220pF, 10V,NP0,0402 Eletrical performance 1 885012005015 WE Ceramicchipcapacitor47µF, 16V,X5R,0805 Outputfilter 1 885012109011 WE R1 64.9kΩ Electrical performance 1 — — R2 11.3kΩ forVOUT =5V Electrical performance 1 — — DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 27
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19 HANDLING RECOMMENDATIONS
- The power module is classified as MSL3 (JEDEC Moisture Sensitivity Level 3) and requires special handling due to moisturesensitivity(JEDECJ-STD033D). 2. Thepartsaredeliveredinasealedbag(MoistureBarrierBag=MBB)andshouldbeprocessedwithinoneyear. 3. Whenopeningthemoisturebarrierbag,checktheHumidityIndicatorCard(HIC)forcolorstatus. Bakepartspriorto solderingincaseindicatorcolorhaschangedaccordingtothenotesonthecard. 4. Partsmustbeprocessedafter168hour(7days)offloorlife. Oncethistimehasbeenexceeded,bakepartspriorto solderingperJEDECJ-STD033Drecommendation. 5. Maximumnumberofsoldercyclesistwo. 6. Forminimumrisk,solderthemoduleinthelastsoldercycleofthePCBproduction. 7. Forsolderingprocesspleaseconsiderleadmaterialcopper(Cu)andleadfinishtin(Sn). 8. ItisrecommendedtouseastandardSACAlloysuchasSAC305,type3orhigher. 9. Theprofilebelowisvalidforconvectionreflowonly. 10. Othersolderingmethods(e.g. vaporphase)arenotverifiedandhavetobevalidatedbythecustomerattheirownrisk.
19.1 SOLDERING PROFILE
Table13:Reflowsolderprofile. Profile Feature Symbol Value Preheattemperatureminimum Ts_min 150°C Preheattemperaturemaximum Ts_max 180°C PreheattimefromT s_min toTs_max ts 60-90seconds Liquidoustemperature TL 217°C TimemaintainedaboveT L tL 60-190seconds Classificationtemperature TC 260°C Peakpackagebodytemperature TP TP ≤ TC Timewithin5°Cofactualpeak temperature tP tP ≤ 20seconds Ramp-upRate(T L toTp) 3°C/secondmaximum Ramp-downrate(T p toTL) 3°C/secondmaximum Time25°Ctopeaktemperature 8minutesmaximum PleaserefertoJEDECJ-STD020Eforfurtherinformationpertainingtoreflowsolderingofelectroniccomponents. Figure25:Solderprofile. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 28
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20 PHYSICAL DIMENSIONS
20.1 COMPONENT
5,0 1,8 max. 0,21 ref. 1,5 ref. 0,4 ±0,05 1,0 1,9 0,3 ±0,05 0,8 1,6 1,1 ±0,05 2,0 0,7 0,9 ±0,05 2,5 1 4 Bottom view All dimensions in mm T olerances ±0.1mm unless otherwise indicated Figure26:171930601componentdimensions. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 29
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20.2 EXAMPLE LANDPATTERN
Figure27:171930601landpatterndimensions. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 30
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20.3 PACKAGING
B D C A N close to center detail B Chip Cavity Sprocket Hole Embossment Cover Tape B Figure28:171930601reeldimensions. Table14:Reeldimensions. A B C D N W1 W2 W3 W3 Material DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 31
WPME-VDMM -VariableStepDownMicroModule Tape in mm End Feeding direction Start T Carrier Tape Top Cover Tape F E1 E2 W Cover Tape No Component min. 160mm Components No Component min. 100mm Cover Tape min. 400mm A A Figure29:171930601tapedimensions. Table15:Tapedimensions. Tape Type A0 B0 W T T1 T2 K0 P0 P1 P2 D0 D1 E1 E2 F Tapematerialispolystyrene. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 32
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21 DOCUMENT HISTORY
Table16:Documenthistory. Revision Date Description Comment
1.0 November2021 Initialdatasheetrelease
1.1 December2021 Minorformattingchange Updatedformatandupdatedfrontpage
1.2 April2022 Minorchanges
- Updateddocumentfontstyle 2. Correctedoutputvoltagevaluesinoutput voltageselectiontableinDesignFlow 3. UpdatedFilterSuggestionforConductedEMI section
2.0 July2023 PCN
Therecommendedreflowsolderprofileinthe HandlingRecommendationssectionofthedata sheethasbeenupdated. Theformattingofthe documenthasbeenupdated. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 33
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22 LIST OF FIGURES
DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 34
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23 LIST OF TABLES
DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 35
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24 CAUTIONS AND WARNINGS
The following conditions apply to all goods within the product series of MagI3C of Würth Elektronik eiSos GmbH & Co. KG: General:
- Allrecommendationsaccordingtothegeneraltechnicalspecificationsofthedata-sheethavetobecompliedwith.
- Theusageandoperationoftheproductwithinambientconditionswhichprobablyalloyorharmthecomponentsurface hastobeavoided.
- The responsibility for the applicability of customer specific products and use in a particular customer design is always withintheauthorityofthecustomer. Alltechnicalspecificationsforstandardproductsdoalsoapplyforcustomerspecific products
- Residualwashingvarnishagentthatisusedduringtheproductiontocleantheapplicationmightchangethecharacteristics ofthebody,pinsortermination. Thewashingvarnishagentcouldhaveanegativeeffectonthelongtermfunctionofthe product. Directmechanicalimpacttotheproductshallbepreventedasthematerialofthebody,pinsorterminationcould flakeorintheworstcaseitcouldbreak. Asthesedevicesaresensitivetoelectrostaticdischargecustomershallfollow properICHandlingProcedures.
- Customer acknowledges and agrees that it is solely responsible for compliance with all legal, regulatory and safety-relatedrequirementsconcerningitsproducts,andanyuseofWürthElektronikeiSosGmbH&Co.KGcomponents in its applications, notwithstanding any applications-related information or support that may be provided by Würth ElektronikeiSosGmbH&Co.KG.
- Customer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipatedangerousconsequencesoffailures,monitorfailuresandtheirconsequenceslessenthelikelihoodoffailures thatmightcauseharmandtakeappropriateremedialactions
- CustomerwillfullyindemnifyWürthElektronikeiSosanditsrepresentativesagainstanydamagesarisingoutoftheuse ofanyWürthElektronikeiSosGmbH&Co.KGcomponentsinsafety-criticalapplications Product specific: Followallinstructionsmentionedinthedatasheet,especially:
- The solder profile has to comply with the technical reflow or wave soldering specification, otherwise this will void the warranty.
- Allproductsaresupposedtobeusedbeforetheendoftheperiodof12monthsbasedontheproductdate-code.
- Violationofthetechnicalproductspecificationssuchasexceedingtheabsolutemaximumratingswillvoidthewarranty.
- Itisalsorecommendedtoreturnthebodytotheoriginalmoistureproofbagandresealthemoistureproofbagagain.
- ESDpreventionmethodsneedtobefollowedformanualhandlingandprocessingbymachinery. Disclaimer: Thiselectroniccomponenthasbeendesignedanddevelopedforusageingeneralelectronicequipmentonly. Thisproductis notauthorizedforuseinequipmentwhereahighersafetystandardandreliabilitystandardisespeciallyrequiredorwhere afailureoftheproductisreasonablyexpectedtocauseseverepersonalinjuryordeath,unlessthepartieshaveexecutedan agreementspecificallygoverningsuchuse. MoreoverWürthElektronikeiSosGmbH&Co.KGproductsareneitherdesigned norintendedforuseinareassuchasmilitary,aerospace,aviation,nuclearcontrol,submarine,transportation(automotive control,traincontrol,shipcontrol),transportationsignal,disasterprevention,medical,publicinformationnetworketc. Würth ElektronikeiSosGmbH&Co.KGmustbeinformedabouttheintentofsuchusagebeforethedesign-instage. Inaddition, sufficientreliabilityevaluationchecksforsafetymustbeperformedoneveryelectroniccomponentwhichisusedinelectrical circuitsthatrequirehighsafetyandreliabilityfunctionsorperformance. Thesecautionsandwarningscomplywiththestate ofthescientificandtechnicalknowledgeandarebelievedtobeaccurateandreliable. However,noresponsibilityisassumed forinaccuraciesorincompleteness. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 36
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25 IMPORTANT NOTES
General Customer Responsibility Some goods within the product range of Würth Elektronik eiSos GmbH & Co. KG contain statements regarding general suitabilityforcertainapplicationareas. Thesestatementsaboutsuitabilityarebasedonourknowledgeandexperienceof typical requirements concerning the areas, serve as general guidance and cannot be estimated as binding statements about the suitability for a customer application. The responsibility for the applicability and use in a particular customer design is always solely within the authority of the customer. Due to this fact it is up to the customer to evaluate, where appropriatetoinvestigateanddecidewhetherthedevicewiththespecificproductcharacteristicsdescribedintheproduct specificationisvalidandsuitablefortherespectivecustomerapplicationornot. Accordingly,thecustomeriscautionedto verifythatthedatasheetiscurrentbeforeplacingorders. Customer Responsibility Related to Specific, in Particular Safety-Relevant, Applications Ithastobeclearlypointedoutthatthepossibilityofamalfunctionofelectroniccomponentsorfailurebeforetheendofthe usuallifetimecannotbecompletelyeliminatedinthecurrentstateoftheart,eveniftheproductsareoperatedwithinthe rangeofthespecifications. Incertaincustomerapplicationsrequiringaveryhighlevelofsafetyandespeciallyincustomer applications in which the malfunction or failure of an electronic component could endanger human life or health it must beensuredbymostadvancedtechnologicalaidofsuitabledesignofthecustomerapplicationthatnoinjuryordamageis causedtothirdpartiesintheeventofmalfunctionorfailureofanelectroniccomponent. Best Care and Attention Anyproduct-specificnotes,warningsandcautionsmustbestrictlyobserved. Anydisregardwillresultinthelossofwarranty. Customer Support for Product Specifications Some products within the product range may contain substances which are subject to restrictions in certain jurisdictions inordertoservespecifictechnicalrequirements. Necessaryinformationisavailableonrequest. Inthiscasethefieldsales engineerortheinternalsalespersoninchargeshouldbecontactedwhowillbehappytosupportinthismatter. Product R&D Due to constant product improvement product specifications may change from time to time. As a standard reporting procedure of the Product Change Notification (PCN) according to the JEDEC-Standard we inform about minor and major changes. IncaseoffurtherqueriesregardingthePCN,thefieldsalesengineerortheinternalsalespersoninchargeshould becontacted. ThebasicresponsibilityofthecustomerasperSection1and2remainsunaffected. Product Life Cycle Due to technical progress and economical evaluation we also reserve the right to discontinue production and delivery of products. AsastandardreportingprocedureoftheProductTerminationNotification(PTN)accordingtotheJEDECStandard we will inform at an early stage about inevitable product discontinuance. According to this we cannot guarantee that all productswithinourproductrangewillalwaysbeavailable. Thereforeitneedstobeverifiedwiththefieldsalesengineeror the internal sales person in charge about the current product availability expectancy before or when the product for application design-in disposal is considered. The approach named above does not apply in the case of individual agreementsdeviatingfromtheforegoingforcustomer-specificproducts. Property Rights AlltherightsforcontractualproductsproducedbyWürthElektronikeiSosGmbH&Co.KGonthebasisofideas,development contracts as well as models or templates that are subject to copyright, patent or commercial protection supplied to the customerwillremainwithWürthElektronikeiSosGmbH&Co.KG.WürthElektronikeiSosGmbH&Co.KGdoesnotwarrantor representthatanylicense,eitherexpressedorimplied,isgrantedunderanypatentright,copyright,maskworkright,orother intellectualpropertyrightrelatingtoanycombination,application,orprocessinwhichWürthElektronikeiSosGmbH&Co.KG componentsorservicesareused. General Terms and Conditions Unless otherwise agreed in individual contracts, all orders are subject to the current version of the “General Terms and ConditionsofWürthElektronikeiSosGroup”,lastversionavailableatwww.we-online.com. DataSheetVersion2.0 ©July2023 www.we-online.com/powermodules 37