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MCOTS-C-28-05-QT Single Output Quarter Brick Military COTS DC/DC Converters
16-40V
Continuous Input
16-50V
Transient Input
5V
Output
24A
Output
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Full Power Operation: -55C to +100C
TheMilQorseriesofMILCOTSDC/DCconvertersbrings SynQor's field proven high-efficiency synchronous rectification technology to the Military/Aerospace industry. SynQor's ruggedized encased packaging approach ensures survivability in demanding environments. Compatible with the industry standard format,theseconvertersoperateatafixedfrequency, andfollowconservativecomponentderatingguidelines. Theyaredesignedandmanufacturedtocomplywitha widerangeofmilitarystandards Operational Features
* Highefficiency,88%atfullratedloadcurrent * Operatinginputvoltagerange:16-40V * FixedfrequencyswitchingprovidespredictableEMI * Nominimumloadrequirement
91% @ 12A / 88% @ 24A Efficiency
DesignedandManufacturedintheUSA
Mechanical Features
Protection Features
* Industrystandardquarter-brickpin-outconfiguration * Size:1.54"x2.39"x0.50" (39.0x60.6x12.7mm) * Totalweight:3oz(85g)
* Inputunder-voltagelockout * Outputcurrentlimitandshortcircuitprotection * Activebackbiaslimit * Outputover-voltageprotection * Thermalshutdown
Control Features
Screening/Qualification
* On/Offcontrolreferencedtoinputside * Remotesensefortheoutputvoltage * Outputvoltagetrimrangeof-20%,+10%
Safety Features
* 2250V,30MWinput-to-outputisolation * Certified60950-1requirementsforbasicinsulation (seeStandardsandQualificationspage) * CEMarked * RoHScompliant
Product # MCOTS-C-28-05-QT Phone 1-888-567-9596
* AS9100andISO9100:2000certifiedfacility * QualificationconsistentwithMIL-STD-883 * Avialablewithstandardormilitarygradescreening * Pre-capinspectionperIPC-610,ClassIII * TemperaturecyclingperMIL-STD-883,Method1010, ConditionB,10cycles * Burn-Inat100Cbaseplatetemperature * FinalvisualinspectionperMIL-STD-2008 * Fullcomponenttraceability
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Doc.# 005-0005271 Rev. 1
06/11/09
Page 1
MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
BLOCK DIAGRAM
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TYPICAL CONNECTION DIAGRAM
Vin
External Input Filter

Vin(+)
Vout(+)
Electrolytic
Vsense(+)
Trim
Rtrim-up
ON/OFF
or
Vsense(_) Vout(_)
Rtrim-down
Cload
Iload
Vin(_)
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MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
MCOTS-C-28-05-QT ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS InputVoltage Non-Operating Operating OperatingTransientProtection IsolationVoltage InputtoOutput InputtoBase-Plate OutputtoBase-Plate OperatingTemperature StorageTemperature VoltageatON/OFFinputpin INPUT CHARACTERISTICS OperatingInputVoltageRange InputUnder-VoltageLockout Turn-OnVoltageThreshold Turn-OffVoltageThreshold LockoutVoltageHysteresis RecommendedExternalInputCapacitance InputFilterComponentValues(L\C) MaximumInputCurrent No-LoadInputCurrent DisabledInputCurrent ResponsetoInputTransient InputTerminalRippleCurrent RecommendedInputFuse OUTPUT CHARACTERISTICS OutputVoltageSetPoint OutputVoltageRegulation OverLine OverLoad OverTemperature TotalOutputVoltageRange OutputVoltageRippleandNoise Peak-to-Peak RMS OperatingOutputCurrentRange OutputDCCurrent-LimitInception OutputDCCurrent-LimitShutdownVoltage Back-DriveCurrentLimitwhileEnabled Back-DriveCurrentLimitwhileDisabled MaximumOutputCapacitance OutputVoltageduringLoadCurrentTransient StepChangeinOutputCurrent(0.1A/s) SettlingTime OutputVoltageTrimRange OutputVoltageRemoteSenseRange OutputOver-VoltageProtection EFFICIENCY 100%Load 50%Load Ta=25C,airflowrate=300LFM,Vin=dcunlessotherwisenoted;fulloperatingtemperaturerangeis-40Cto+100Cbaseplatetemperaturewith appropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter
Min.
Typ.
Max.
60 40 50
Units
V V V
Notes & Conditions
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-55 -65 -2 16 2250 2250 2250 100 135 18 40 Vdc Vdc Vdc C C V V Baseplatetemperature 28 15.1 14.2 15.4 14.5 0.9 100 1.0\6.6 70 2 0.3 380 5 15.7 14.8 11.199 90 4 TBD V V V F H\F A mA mA V mA A V 50Vtransientfor1s TypicalESR0.1-0.2 Internalvalues;seeFigureE Vinmin;trimup;incurrentlimit SeeFigure6 RMS Fastactingexternalfuserecommended 4.95 5.05 -75 4.875 0 0.1 0.1 0.3 0.3 75 5.125 120 20 24 31.2 % % mV V 0 26.4 60 10 28.8 2.4 0.55 TBD 130 100 6.1 8000 mV mV A A V A mA F mV s % % V % % Oversample,line,load,temperature&life 20MHzbandwidth;seeNote1 Fullload Fullload Subjecttothermalderating Outputvoltage10%Low Negativecurrentdrawnfromoutput Negativecurrentdrawnfromoutput Voutnominalatfullload(resistiveload) -20 5.85 10 10 6.35 50%to75%to50%Ioutmax Towithin1%Voutnom AcrossPins8&4;CommonFigures3-5;seeNote2 AcrossPins8&4 Overfulltemprange SeeFigure1forefficiencycurve SeeFigure1forefficiencycurve 88.4 91.1
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Continuous Continuous 1stransient,squarewave
MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
MCOTS-C-28-05-QT ELECTRICAL CHARACTERISTICS
Tb=25C,Vin=28Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-55Cto+100Cbaseplatetemperaturewithappropriatepower derating.Specificationssubjecttochangewithoutnotice. DYNAMIC CHARACTERISTICS Turn-OnTransient Turn-OnTime 9 ms Fullload,Vout=90%nom. Start-UpInhibitTime 200 230 250 ms -40Cto+125C;FigureE OutputVoltageOvershoot 0 % MaximumOutputCapacitance ISOLATION CHARACTERISTICS IsolationVoltage(dielectricstrength) SeeAbsoluteMaximumRatings IsolationResistance 30 M IsolationCapacitance(inputtooutput) 1000 pF SeeNote2 TEMPERATURE LIMITS FOR POWER DERATING CURVES SemiconductorJunctionTemperature 125 C Packageratedto150C BoardTemperature 125 C ULratedmaxoperatingtemp130C TransformerTemperature 125 C MaximumBaseplateTemperature,Tb 100 C FEATURE CHARACTERISTICS SwitchingFrequency 230 250 270 kHz Forbothinputandisolationstage ON/OFFControl Off-StateVoltage 2.4 18 V On-StateVoltage -2 0.8 ON/OFFControl ApplicationnotesFiguresA&B Pull-UpVoltage 5 V Pull-UpResistance 50 k Over-TemperatureShutdownOTPTripPoint 125 C AveragePCBTemperature Over-TemperatureShutdownRestartHysteresis 10 C RELIABILITY CHARACTERISTICS 6Hrs. 80%load,200LFM,40CTa CalculatedMTBF(Telcordia)TR-NWT-000332 TBD 10 CalculatedMTBF(MIL-217)MIL-HDBK-217F TBD 106Hrs. 80%load,200LFM,40CTa FieldDemonstratedMTBF 106Hrs. Seeourwebsitefordetails Note1:Outputisterminatedwith1Fceramicand15Flow-ESRtantalumcapacitors.Forapplicationsrequiringreducedoutputvoltagerippleand noise,consultSynQorapplicationssupport(e-mail:support@synqor.com) Note2:Highervaluesofisolationcapacitancecanbeaddedexternaltothemodule.
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Product # MCOTS-C-28-05-QT Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005271 Rev. 1 06/11/09 Page 4
MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
95
18 16
90
14
Power Dissipation (W)
85
12 10 8 6 4 2 0
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80 75 70 16 Vin 28 Vin 50 Vin
16 Vin 28 Vin 50 Vin
Efficiency (%)
65
0
5
10
15
20
0
5
10
15
20
Load Current (A)
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25C.
Figure 2: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25C.
28 24 20 16 12 8 4 0
28 24 20 16 12 8 4 0
Iout (A)
400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s)
Iout (A)
400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s)
0
25
40
55
70
85
0
25
40
55
70
85
Ambient Air Temperature (C)
Ambient Air Temperature (C)
Figure 3: Encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows across the converter from pin 3 to pin 1 (nominal input voltage).
Figure 4: Encased converter (with 1/4" heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows across the converter from pin 3 to pin 1 (nominal input voltage).
Figure 5: Output voltage response to step-change in load current (50%-75%50% of Iout(max); dI/dt = 0.1 A/s). Load cap: 1 F ceramic and 15 F tantalum capacitors. Ch 1: Vout (200mV/div), Ch 2: Iout (5A/div).
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Figure 6: Output voltage response to step-change in input voltage (250 V/ms). Load cap: 100 F, electrolytic output capacitance. Ch 1: Vout (200mV/div), Ch 2: Vin (20V/div).
Doc.# 005-0005271 Rev. 1 06/11/09
Product # MCOTS-C-28-05-QT
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MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
120
Nominal Vout
100
Typical Current Limit Inception Point
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Output Voltage (%)
80 Typical Output Voltage at Shutdown 60 40 Vin min 20 Vin nom Vin max 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Load Current (% )
Figure 7: Typical startup waveform. Input voltage pre-applied, ON/OFF Pin on Ch 2.
100,000.0
Figure 8: Output voltage vs. load current showing typical current limit curves and converter shutdown points.
Trim Up
Trim Down
Trim Resistance (kOhms)
10,000.0
1,000.0
100.0
10.0
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20
Figure 9: Trim graph for trim-up, trim down.
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MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
MILCOTSQualification
Test Name LifeTesting Details
Visual,mechanicalandelectricaltestingbefore,duringandafter1000hour burn-in@fullload Visual,mechanicalandelectricaltestingbefore,duringandaftershockand vibrationtests +85C,85%RH,1000hours,2minuteson/6hoursoff 500cyclesof-40Cto+100C(30 minutedwellateachtemperature 15pins
#Tested (# Failed)
15 (0)
Consistent with MIL-STD-883F Method Method1005.8
Consistent with MILSTD-883F Method 5005
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Shock-Vibration Humidity
5 (0) 8 (0)
MIL-STD-202,Method1
Method1004.7
TemperatureCycling Solderability DMT
10 (0) 15 (0)
Method1010.8 Method2003
ConditionA
-65Cto+110Cacrossfulllneand loadspecificatonsin5Csteps
7 (0)
MILCOTSScreening
Screening
Process Description
Standard
Military (MIL Grade)
BaseplateOperatingTemperature StorageTemperature Pre-Capinspection TemperatureCyclling Burn-In
-55Cto+100C -65Cto+135C
-55Cto+100C -65Cto+135C
IPC-610,ClassIII
Method1010,ConditionB, 10Cycles 100CBaseplate 100% MIL-STD-2008
12Hours 25C
96Hours
FinalElectricalTest
-55C,+25C,+100C
FinalVisualInspection
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Page 7
MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
BASICOPERATIONANDFEATURES
This MIL-COTS converter series uses a two-stage power conversion topology. The first stage is a buck-converter that keepstheoutputvoltageconstantovervariationsinline,load, and temperature. The second stage uses a transformer to providethefunctionsofinput/outputisolationandvoltagestepuporstep-downtoachievetheoutputvoltagerequired. Both the first stage and the second stage switch at a fixed frequency for predictable EMI performance. Rectification of the transformer's output is accomplished with synchronous rectifiers. These devices, which are MOSFETs with a very low on-state resistance, dissipate far less energy than Schottky diodes. This is the primary reason that the converter has such highefficiency,evenatverylowoutputvoltagesandveryhigh outputcurrents.
CONTROLFEATURES
REMOTE ON/OFF (Pin 2):TheON/OFFinput,Pin2,permits the user to control when the converter is on or off. This input is referenced to the return terminal of the input bus, Vin(-). TheON/OFFsignalisactivelow(meaningthatalowturnsthe converteron).FigureAdetailsfourpossiblecircuitsfordriving theON/OFFpin.FigureBisadetailedlookoftheinternalON/ OFFcircuitry.
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REMOTE SENSE(+) (Pins 7 and 5): The SENSE(+) inputs correctforvoltagedropsalongtheconductorsthatconnectthe converter'soutputpinstotheload. Pin 7 should be connected to Vout(+) and Pin 5 should be connectedtoVout(-)atthepointontheboardwhereregulation is desired. A remote connection at the load can adjust for a voltage drop only as large as that specified in this datasheet, thatis Theseconvertersareofferedtotallyencasedtowithstandharsh environmentsandthermallydemandingapplications.Dissipation throughout the converter is so low that it does not require a heatsink for operation in many applications; however, adding a heatsink provides improved thermal derating performance in extremesituations. Thisseriesofconvertersusetheindustrystandardfootprintand pin-outconfiguration.
[Vout(+)-Vout(-)]-[Vsense(+)-Vsense(-)]<
SenseRange%xVout
Pins 7 and 5 must be connected for proper regulation of the output voltage. If these connections are not made, the converter will deliver an output voltage that is slightly higher thanitsspecifiedvalue.
Note: the output over-voltage protection circuit senses the voltage across the output (pins 8 and 4) to determine when it should trigger, not the voltage across the converter's sense leads(pins7and5).Therefore,theresistivedropontheboard should be small enough so that output OVP does not trigger, evenduringloadtransients.
ON/OFF
ON/OFF
Vin(_)
Vin(_)
5V
RemoteEnableCircuit
NegativeLogic (PermanentlyEnabled) ON/OFF 5V
50k
ON/OFF
50k
TTL/ CMOS
TTL
ON/OFF
100pF
Vin(_)
Vin(_)
Vin(_)
OpenCollectorEnableCircuit
DirectLogicDrive
Figure A: Various circuits for driving the ON/OFF pin.
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Figure B: Internal ON/OFF pin circuitry
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Doc.# 005-0005271 Rev. 1
Page 8
MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
OUTPUT VOLTAGE TRIM (Pin 6):TheTRIMinputpermitsthe usertoadjusttheoutputvoltageacrossthesenseleadsupor downaccordingtothetrimrangespecifications. To decrease the output voltage, the user should connect a resistorbetweenPin6andPin5(SENSE(-)input).Foradesired decreaseofthenominaloutputvoltage,thevalueoftheresistor shouldbe
PROTECTIONFEATURES
Input Under-Voltage Lockout: The converter is designed toturnoffwhentheinputvoltageistoolow,helpingavoidan input system instability problem, described in more detail in the application note titled "Input System Instability" on our website.Thelockoutcircuitryisacomparatorwithdchysteresis. Whentheinputvoltageisrising,itmustexceedthetypicalTurnOn Voltage Threshold value (listed on the specifications page) before the converter will turn on. Once the converter is on, the input voltage must fall below the typical Turn-Off Voltage Thresholdvaluebeforetheconverterwillturnoff. Output Current Limit: The maximum current limit remains constant as the output voltage drops. However, once the impedanceoftheloadacrosstheoutputissmallenoughtomake theoutputvoltagedropbelowthespecifiedOutputDCCurrentLimitShutdownVoltage,theconverterturnsoff.
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Rtrim-down= 511 -10.22 (kW) %
()
where
% =
Vnominal-Vdesired x100% Vnominal
To increase the output voltage, the user should connect a resistorbetweenPin6andPin7(SENSE(+)input).Foradesired increaseofthenominaloutputvoltage,thevalueoftheresistor shouldbe
Rtrim-up =
where
(
5.11VOUTx(100+%)
1.225%
_ 511 _ 10.22
%
)
(kW)
Theconverterthenentersa"hiccupmode"whereitrepeatedly turnsonandoffata5Hz(nominal)frequencywitha5%duty cycleuntiltheshortcircuitconditionisremoved.Thisprevents excessiveheatingoftheconverterortheloadboard. Output Over-Voltage Limit:Ifthevoltageacrosstheoutput pinsexceedstheOutputOver-VoltageProtectionthreshold,the converterwillimmediatelystopswitching.Thispreventsdamage totheloadcircuitdueto1)excessiveseriesresistanceinoutput current path from converter output pins to sense point, 2) a releaseofashort-circuitcondition,or3)areleaseofacurrent limit condition. Load capacitance determines exactly how high theoutputvoltagewillriseinresponsetotheseconditions.After 200mstheconverterwillautomaticallyrestart.
Vout=NominalOutputVoltage
Trim graphs show the relationship between the trim resistor valueandRtrim-upandRtrim-down,showingthetotalrangethe outputvoltagecanbetrimmedupordown. Note:theTRIMfeaturedoesnotaffectthevoltageatwhichthe outputover-voltageprotectioncircuitistriggered.Trimmingthe output voltage too high may cause the over-voltage protection circuittoengage,particularlyduringtransients.
ItisnotnecessaryfortheusertoaddcapacitanceattheTrim pin.Thenodeisinternallybypassedtoeliminatenoise.
Total DC Variation of VOUT: For the converter to meet its full specifications, the maximum variation of the dc value of VOUT, duetobothtrimmingandremoteloadvoltagedrops,shouldnot begreaterthanthatspecifiedfortheoutputvoltagetrimrange.
Over-Temperature Shutdown: A temperature sensor on the converter senses the average temperature of the module. Thethermalshutdowncircuitisdesignedtoturntheconverter off when the temperature at the sensed location reaches the Over-Temperature Shutdown value. It will allow the converter to turn on again when the temperature of the sensed location fallsbytheamountoftheOver-TemperatureShutdownRestart Hysteresisvalue.
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MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
APPLICATIONCONSIDERATIONS
Input System Instability: This condition can occur because Application Circuits:FigureCprovidesatypicalcircuitdiagram any dc-dc converter appears incrementally as a negative whichdetailstheinputfilteringandvoltagetrimming. resistanceload.Adetailedapplicationnotetitled"InputSystem Instability"isavailableontheSynQorwebsitewhichprovides anunderstandingofwhythisinstabilityarises,andshowsthe preferredsolutionforcorrectingit.
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Vin(+) Vout(+)
Vin
External Input Filter
Electrolytic Capacitor
Vsense(+)
Trim
Rtrim-up
ON/OFF
or
Vsense(_) Vout(_)
Rtrim-down
Cload
Iload
Vin(_)
Figure C: Typical application circuit (negative logic unit, permanently enabled).
Input Filtering and External Capacitance:FigureDprovides adiagramshowingtheinternalinputfiltercomponents.Thisfilter dramaticallyreducesinputterminalripplecurrent,whichotherwise couldexceedtheratingofanexternalelectrolyticinputcapacitor.
The recommended external input capacitance is specified in the Input Characteristics section on the Electrical Characteristics page.Moredetailedinformationisavailableintheapplicationnote titled"EMICharacteristics"ontheSynQorwebsite.
Lin
Vin(+)
C1
C2
Regulation Stage
Isolation Stage
Vin(_)
Figure D: Internal Input Filter Diagram (component values listed on the specifications page).
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MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
Startup Inhibit Period:TheStartupInhibitPeriodensuresthat theconverterwillremainoffforapproximately200mswhenitis shutdownforanyreason.Whenanoutputshortispresent,this generates a 5 Hz "hiccup mode," which prevents the converter fromoverheating.Inall,therearesevenwaysthattheconverter canbeshutdown,initiatingaStartupInhibitPeriod: * InputUnder-VoltageLockout * InputOver-VoltageShutdown * OverTemperatureShutdown * CurrentLimit * ShortCircuitProtection When the ON/OFF pin goes high after t2, the Startup Inhibit Period has elapsed, and the output turns on within the typical Turn-OnTime. Thermal Considerations:Themaximumoperatingbase-plate temperature,TB,is100C.Aslongastheuser'sthermalsystem keepsTB<100C,theconvertercandeliveritsfullratedpower.
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* OutputOver-VoltageProtection * TurnedoffbytheON/OFFinput Apowerderatingcurvecanbecalculatedforanyheatsinkthatis attached to the base-plate of the converter. It is only necessary todeterminethethermalresistance,RTHBA,ofthechosenheatsink between the base-plate and the ambient air for a given airflow rate. This information is usually available from the heatsink vendor.Thefollowingformulacanthebeusedtodeterminethe maximumpowertheconvertercandissipateforagiventhermal conditionifitsbase-plateistobenohigherthan100C. FigureEshowsthreeturn-onscenarios,whereaStartupInhibit 100C-TA max Periodisinitiatedatt0,t1,andt2: Pdiss = RTHBA Beforetimet0,whentheinputvoltageisbelowtheUVLthreshold, theunitisdisabledbytheInputUnder-VoltageLockoutfeature. Thisvalueofpowerdissipationcanthenbeusedinconjunction WhentheinputvoltagerisesabovetheUVLthreshold,theInput withthedatashowninFigure2todeterminethemaximumload Under-VoltageLockoutisreleased,andaStartupInhibitPeriodis current (and power) that the converter can deliver in the given initiated.Attheendofthisdelay,theON/OFFpinisevaluated, thermalcondition. andsinceitisactive,theunitturnson. Forconvenience,powerderatingcurvesforanencasedconverter Attimet1,theunitisdisabledbytheON/OFFpin,anditcannot without a heatsink and with a typical heatsink are provided for eachoutputvoltage. beenabledagainuntiltheStartupInhibitPeriodhaselapsed.
Vin
Under-Voltage LockoutTurnOnThreshold
ON/OFF
(neglogic)
ON
OFF ON
OFF
ON
Vout
9ms(typical
(typicalstart-up inhibitperiod)
200ms
turnontime)
200ms
200ms
t0
t1
t2
t
Figure E: Startup Inhibit Period (turn-on time not to scale)
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MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
Mechanical Drawing
Top View
1.5360.020(39.010.5) 0.600(15.24) 0.450(11.43) 0.300(7.62) 0.150(3.81) 0.2530.020 (6.40.5)
Side View
0.5000.025 (12.70.63) OverallHeight
0.180.010 (4.570.25)
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0.2630.020 (6.680.5)
87654
2.386 0.020 (60.60.5)
2.00 (50.8)
1.86 (47.2)
M3 Threaded Inserts 4Places SeeNotes
1
2
3
0.183.020 (4.65)0.5
0.4680.020 (11.890.5)
0.300(7.62) 0.600(15.24) 1.030(26.16)
NOTES
PIN DESIGNATIONS
Function Positiveinputvoltage
1) M3screwsusedtoboltunit'sbaseplatetoothersurfaces(suchasa heatsink)mustnotexceed0.100"(2.54mm)depthbelowthesurface ofthebaseplate. 2) Appliedtorqueperscrewshouldnotexceed6in-lb.(0.7Nm).
Pin 1 2 3
Name Vin(+)
ON/OFF Vin(-)
3) Baseplateflatnesstoleranceis0.004"(.10mm)TIRforsurface.
TTLinputtoturnconverteron andoff,referencedtoVin(-),with internalpullup. Negativeinputvoltage Negativeoutputvoltage Negativeremotesense1 Outputvoltagetrim2 Positiveremotesense3 Positiveoutputvoltage
4) Pins1-3,5-7are0.040"(1.02mm)diameter,with0.080"(2.03mm) diameterstandoffshoulders.
4 5 7 8
Vout(-) TRIM
5) Pins4and8are0.062"(1.57mm)diameterwith0.100"(2.54mm) diameterstandoffshoulders. 6) AllPins:Material-CopperAlloy-Finish(RoHS6/6)-MatteTinover Nickelplate 7) Undimensionedcomponentsareshownforvisualreferenceonly. 8) Weight:3.02oz.(85.7g)typical 9) Alldimensionsininches(mm) Tolerances:x.xx+/-0.02in.(x.x+/-0.5mm) x.xxx+/-0.010in.(x.xx+/-0.25mm)
SENSE(-)
6
SENSE(+) Vout(+)
Notes: 1)
SENSE(-)shouldbeconnectedtoVout(-)eitherremotelyor attheconverter. LeaveTRIMpinopenfornominaloutputvoltage.
2)
10) Workmanship:MeetsorexceedsIPC-A-610CClassII
3)
11) Recommendedpinlengthis0.03"(0.76mm)greaterthanthePCB thickness.
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SENSE(+)shouldbeconnectedtoVout(+)eitherremotelyor attheconverter.
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MCOTS-C-28-05-QT
Output: 5V Current: 24A
Technical Specification
Ordering Information/ Part Numbering
Family Product Input Voltage Output Voltage
1R2:1.2V 1R5:1.5V 1R8:1.8V 2R5:2.5V 3R3:3.3V 05:5V 07:7V 12:12V 15:15V 24:24V 28:28V 40:40V 48:48V P:Passive T:Active
Package
FT:FullBrick HP:HalfBrickPeta HZ:HalfBrickZeta QT:QuarterBrick EG:EighthBrick SM:SixteenthBrick
Heatsink Option
Screening Level
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MCOTS C:Converter F:Filter 28:16-40V 48:34-75V 270:155-400V N:Normal F:Flanged S:Standard M:M-Grade
Example MCOTS-C-28-05-QT-N-S
Application Notes
Avarietyofapplicationnotesandtechnicalwhitepaperscan bedownloadedinpdfformatfromourwebsite.
RoHS Compliance:TheEUledRoHS(RestrictionofHazardous Substances)DirectivebanstheuseofLead,Cadmium,Hexavalent Chromium, Mercury, Polybrominated Biphenyls (PBB), and PolybrominatedDiphenylEther(PBDE)inElectricalandElectronic Equipment. This SynQor product is 6/6 RoHS compliant. For more information please refer to SynQor's RoHS addendum availableatourRoHSCompliance/LeadFreeInitiativewebpage ore-mailusatrohs@synqor.com.
PATENTS
SynQorholdsthefollowingpatents,oneormoreofwhichmightapplytothisproduct: 5,999,417 6,594,159 6,927,987 7,119,524 6,222,742 6,731,520 7,050,309 7,269,034 6,545,890 6,894,468 7,072,190 7,272,021
6,577,109 6,896,526 7,085,146 7,272,023
Contact SynQor for further information:

Phone: TollFree: Fax: E-mail: Web: Address:
978-849-0600 888-567-9596 978-849-0602 mqnbofae@synqor.com www.synqor.com 155SwansonRoad Boxborough,MA01719 USA
Warranty SynQoroffersatwo(2)yearlimitedwarranty.Completewarranty informationislistedonourwebsiteorisavailableuponrequestfrom SynQor.
InformationfurnishedbySynQorisbelievedtobeaccurateandreliable. However,noresponsibilityisassumedbySynQorforitsuse,norforany infringementsofpatentsorotherrightsofthirdpartieswhichmayresult fromitsuse.Nolicenseisgrantedbyimplicationorotherwiseunderany patentorpatentrightsofSynQor.
Product # MCOTS-C-28-05-QT
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005271 Rev. 1
06/11/09
Page 13

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