VKA50LS031C [MURATA]
Analog Circuit, MDIP9;
muRata 
Corporate: www.cdtechno.com
Product: www.cd4power.com
VKA50xSC
50 Watt Single Output Half Brick DC/DC Converter
ꢀOperationꢀtoꢀ+100°CꢀꢀBaseplateꢀꢀ
ꢀRoHSꢀCompliant
ꢀ Temperature
ꢀ18-36ꢀVꢀ&ꢀ33ꢀ-ꢀ75VꢀInputꢀRange
ꢀPrimaryꢀRemoteꢀOn/Off,ꢀChoiceꢀofꢀꢀ
ꢀ Pos/NegꢀLogic
ꢀHighꢀEfficiency:ꢀ87%ꢀTypicalꢀatꢀꢀ
ꢀ 5V
ꢀAdjustableꢀOutputꢀVoltage
ꢀContinuoutꢀShort-CircuitꢀProtection
ꢀThermalꢀShutdown
ꢀ100mSꢀTransientꢀResponseꢀ50-ꢀ
ꢀ 100%ꢀLoadꢀStep
ꢀ420ꢀkHzꢀFixed-Frequencyꢀꢀ
ꢀ
ꢀ Operation
ꢀCaseꢀGroundꢀPin
ꢀRemoteꢀSense
ISO9001
CERTIFIED
For full details go to
www.cd4power.com/rohs
ꢀꢀꢀꢀꢀTheꢀVKA50xSCꢀSeriesꢀDC/DCꢀ
convertersꢀpresentꢀanꢀeconomicalꢀandꢀ
practicalꢀsolutionꢀforꢀdistributedꢀpowerꢀ
systemꢀarchitecturesꢀwhichꢀrequireꢀ
highꢀpowerꢀdensityꢀandꢀefficiencyꢀ
whileꢀmaintainingꢀsystemꢀmodularityꢀ
andꢀupgradeability.ꢀWithꢀtheꢀabilityꢀtoꢀ
backupꢀapplicationsꢀcommonꢀinꢀtodays’ꢀ ꢀꢀꢀꢀꢀTheꢀpatentedꢀfixedꢀfrequencyꢀ
telecommunicationꢀandꢀelectronicꢀdataꢀ
processingꢀapplications.ꢀTheꢀoutputꢀisꢀ
fullyꢀisolatedꢀfromꢀtheꢀinput,ꢀallowingꢀ
forꢀaꢀvarietyꢀofꢀpolarityꢀandꢀgroundingꢀ
configurations.ꢀ
architectureꢀcombinedꢀwithꢀsurfaceꢀ
mountꢀtechnologyꢀresultsꢀinꢀaꢀcom-
pact,ꢀefficientꢀandꢀreliableꢀsolutionꢀtoꢀ
DC/DCꢀconversionꢀrequirements.ꢀSafetyꢀ
perꢀUL1950,ꢀENꢀ60950ꢀandꢀCSAꢀ22.2ꢀ
#234.ꢀ
ꢀꢀꢀꢀꢀTheꢀVKA50xSC’sꢀproprietaryꢀ
operateꢀoverꢀaꢀwideꢀinputꢀvoltageꢀrangeꢀ controlꢀcircuitryꢀrespondsꢀtoꢀ50-100%ꢀ
ofꢀ18ꢀtoꢀ36ꢀandꢀ33ꢀtoꢀ75ꢀvolts,ꢀtheseꢀ
modulesꢀareꢀidealꢀforꢀuseꢀinꢀbatteryꢀ
loadꢀstepsꢀinꢀ100mSecondsꢀtoꢀwithinꢀ1%ꢀ
nominalꢀVout.ꢀ
PRODUCT SELECTION CHART
MODEL
INPUT
VOUT
IOUT
EFFICIENCY
VOLTAGE
(VDC)
(A)
MIN
80
85
87
88
89
81
86
88
89
89
TYP
81
86
88
89
90
82
87
89
90
90
VKA50LS03C
VKA50LS05C
VKA50LS12C
VKA50LS15C
VKA50LS24C
VKA50MS03C
VKA50MS05C
VKA50MS12C
VKA50MS15C
VKA50MS24C
3.3V
5.0V
10.0
10.0
4.2
24VDC
(18-36)
12.0V
15.0V
24.0V
3.3V
3.3
2.1
10.0
10.0
4.2
48VDC
(33-75)
5.0V
12.0V
15.0V
24.0V
3.3
2.1
THROUGH-HOLE SOLDERING INFORMATION
These devices are intended for wave soldering or manual soldering.
They are not intended to be subject to surface mount processes under any circumstances.
The normal wave soldering process can be used with these devices where the device is subjected to a maximum wave temperature of 260°C for a period of
no more than 10 seconds. Within this time and temperature range, the integrity of the device’s plastic body will not be compromised and internal temperatures
within the converter will not exceed 175°C. Care should be taken to control manual soldering limits identical to that of wave soldering.
Product: www.cd4power.com
ꢀ
VKA50xSC (Rev A: RoHS) 05/2006
SPECIFICATIONS, ALL MODELS
Specifications are at TCASE = +40°C nominal input voltage unless otherwise specified.
PARAMETER
CONDITIONS
MIN
TYP
MAx
UNITS
INPUT
Voltage Range
VKA50LS
VKA50MS
18
33
24
48
36
75
VDC
VDC
Maximum Input Current
VKA50LS
V
V
IN = 16VDC
IN = 27VDC
3.7
2.2
ꢀ
A
A
VKA50MS
ꢀ ReflectedꢀRippleꢀCurrentꢀꢀꢀ
Input Ripple Rejection
No Load Input Current LS/MS
ꢀꢀꢀꢀ
Peakꢀ-ꢀPeakꢀ
DC to 1KHz
ꢀ
20ꢀ
60
50/100
ꢀ
3.6/4.8
0.18/0.4ꢀ
ꢀꢀꢀꢀmAꢀ
dB
mA
ꢀ
W
W
ꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀ
50
PowerꢀDissipationꢀLS/MSꢀ
ꢀ
ꢀ
ꢀ
ꢀ
No Load
ꢀ ꢀꢀStandby,ꢀPrimaryꢀOn/OffꢀDisabledꢀLS/MSꢀ
Inrush Charge
ꢀ
V
IN = VINmax.
VKA50LS
VKA50MS
ꢀ QuiescentꢀOperatingꢀCurrentꢀ
ꢀ ꢀꢀꢀPrimaryꢀOn/OffꢀDisabledꢀ
0.520
0.360
ꢀ
mC
mC
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
8ꢀ
12ꢀ
mA
PARAMETER
CONDITIONS
MIN
TYP
MAx
UNITS
OUTPUT
ꢀ RatedꢀPowerꢀ
Set point Accuracy
ꢀ
0ꢀ
ꢀ
50ꢀ
1
W
%
Line Regulation
Load Regulation
High Line to Low Line
No Load to Rated Load
0.02
0.2
0.05
0.5
%
%
ꢀ OutputꢀTemperatureꢀDriftꢀ
OutputꢀRipple,ꢀp-pꢀꢀ
ꢀ OutputꢀCurrentꢀLimitꢀInceptionꢀ
ꢀ OutputꢀShort-CircuitꢀCurrentꢀ(2)ꢀ
ꢀ OutputꢀOvervoltageꢀLimitꢀ
Transient Response
ꢀ ꢀꢀꢀꢀꢀPeakꢀDeviationꢀ
Settling Time
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
±.02ꢀ
1%ꢀ
130%ꢀ
120%ꢀ
125%ꢀ
ꢀ
ꢀ
%/°C
VOUT, Nom
OUT, Nom
OUT, Nom
V
DCꢀtoꢀ20MHzꢀBWꢀ
ꢀ
150%ꢀ
150%ꢀ
135%ꢀ
l
l
testꢀ
ꢀ
50 to 100% Load Step
di/dtꢀ=ꢀ1.0A/mSec
OUT,ꢀ1%ꢀofꢀNominalꢀOutputꢀ
2%
100ꢀ
VOUT, Nom
mSec
V
ꢀ
ꢀ
PARAMETER
ISOLATION
CONDITIONS
MIN
TYP
MAx
UNITS
ꢀ InputꢀtoꢀOutputꢀ
Input to Baseplate
ꢀ OutputꢀtoꢀBaseplateꢀ
Resistance
PeakꢀTestꢀforꢀ2ꢀSecondsꢀ
ꢀ
1500ꢀꢀꢀ
1500
500ꢀ
10
ꢀ
ꢀ
ꢀ
ꢀ
VDC
VDC
VDC
MW
Capacitance
Leakage Current
2000
180
pF
mA, rms
V
ISO = 240VAC, 60Hz
GENERAL
ꢀ Efficiency,ꢀLine,ꢀLoad,ꢀTemp.ꢀ(3)ꢀ
Switching Frequency
Remote Sense Compensation
ꢀꢀ OutputꢀVoltageꢀAdjustꢀRangeꢀ
ꢀ RemoteꢀOn/OffꢀControlꢀInputsꢀ
ꢀ ꢀꢀPrimaryꢀ
ꢀ
ꢀ
400
420
440
0.5
ꢀ
ꢀ
KHz
V
ꢀVOUT, Nom
12Vꢀ&ꢀhigher(4)ꢀ
ꢀ
OpenꢀCollector/Drain
ꢀ
ꢀ
-50%ꢀ/ꢀ+25%ꢀ
ꢀ
Sink Current-Logic Low
Vlow
1.0
0.4
mA
V
ꢀ ꢀꢀꢀꢀꢀVhighꢀ
ꢀꢀTurn-onꢀTimeꢀ
ꢀ
ꢀ
ꢀ
ꢀ
OpenꢀCollectorꢀ
12.5ꢀꢀ
Withinꢀ1%ꢀofꢀRatedꢀOutputꢀ
10.0ꢀ
mSec
Weight
85 (3.0)
g (oz.)
TEMPERATURE
ꢀ Operation/Specificationꢀ
ꢀ Storageꢀ
ꢀ ShutdownꢀTemperatureꢀ
Thermal Impedance, case-ambient
CaseꢀTemperatureꢀ
CaseꢀTemperatureꢀ
CaseꢀTemperatureꢀ
-40ꢀ
-55ꢀ
+100ꢀ
+25ꢀ
+25ꢀ
ꢀ
7.1
ꢀ
+100ꢀ
+125ꢀ
+115ꢀ
°C
°C
°C
°C/W
°C
ꢀꢀꢀLeadꢀSolderꢀTemperatureꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ10ꢀSecondsꢀmaxꢀ
ꢀ
+300ꢀ
NOTES: 1)ꢀꢀSeeꢀTypicalꢀPerformanceꢀCurves,ꢀpageꢀ3
(2) Continuous Mode
ꢀ ꢀ
(3)ꢀꢀSeeꢀgraphsꢀforꢀEfficiencyꢀvs.ꢀOutputꢀLoad,ꢀVIN, TCASE
(4) 3.3V Models Limited in Trim Down Range
(5) Consult Factory for Details
Product: www.cd4power.com
ꢁ
VKA50xSC (Rev B) 07/2007
Ambient Air Temperature (°C)
VKA50
ꢃSzz
C
Device Family
Indicatesꢀ50ꢀWattꢀRegulatedꢀUnit
ꢀ
Model Number
Selected from Table of Electrical Characteristics
Where:
x = Input Voltage (L = 24VDC; M = 48VDC)
ꢀ
ꢀꢀꢀꢀꢀꢀꢀzzꢀ=ꢀOutputꢀVoltageꢀ(03=3.3V,ꢀ05=5V,ꢀetc.)
Lead Length
0.200” - No Number
0.145” - (6)
0.110” - (8)
RemoteꢀOn-OffꢀLogic:
ꢀ
Positiveꢀ-ꢀNoꢀNumber
Negative - (1)
RoHS Compliant
Product: www.cd4power.com
ꢂ
VKA50xSC (Rev B) 07/2007
MECHANICAL
NOTES:
All dimensions are in inches (millimeters).
PINꢀPLACEMENTꢀTOLERANCE:ꢀ±ꢀ0.005”
MECHANICALꢀTOLERANCE:ꢀ±ꢀ0.015”
0.530 MAX
[13.46]
Markedꢀ with:ꢀ specificꢀ modeLꢀ ordered,ꢀ dateꢀ code,ꢀ jobꢀ
code.
0.20 [5.1]
.040 [1.02] DIA.
7 PLACES
.081 [2.06] DIA.
2 PLACES
MATERIAL:ꢀUnitsꢀareꢀencapsulatedꢀinꢀaꢀlowꢀthermalꢀresistanceꢀ
moldingcompoundwhichhasexcellentchemicalresistance
and electrical properties in high humidity environments and
over a wide operating temperature range. The encapsulant
andꢀouterꢀshellꢀofꢀtheꢀunitꢀhaveꢀUL94V-0ꢀratings.ꢀLeadꢀmaterialꢀ
is solder plated to allow ease of solderability.
0.20 [5.1]
0.50 [12.7]
.400 [10.16]
0.40 [10.16]
2.000
[50.80]
0.700
[17.78]
1.000
[25.40]
VKA50ꢃSC
1.000
[25.40]
2.40
[61.0]
MAX
1.400
1.400
[35.56]
[35.56]
MOUNTING INSERTS M3 X 0.5 ThRU, 4 PLACES
MAX. TORQUE, 8 IN/LBS
1.900
0.19 [4.8]
[48.26]
2.28
[57.91]
MAX
OUTPUT ADJUST VOLTAGE
OVP NOTE
Specialꢀattentionꢀshouldꢀbeꢀgivenꢀtoꢀtheꢀpeakꢀvoltageꢀ
deviationꢀduringꢀaꢀdynamicꢀloadꢀstepꢀwhenꢀtrimmingꢀtheꢀ
outputꢀaboveꢀtheꢀoriginalꢀsetꢀpointꢀtoꢀavoidꢀtrippingꢀtheꢀ
overvoltageꢀprotectionꢀcircuit.ꢀꢀShouldꢀanꢀOVPꢀconditionꢀ
occur,ꢀtheꢀconverterꢀwillꢀgoꢀintoꢀaꢀlatchꢀconditionꢀandꢀ
mustꢀbeꢀexternallyꢀresetꢀbeforeꢀitꢀwillꢀreturnꢀtoꢀnormalꢀ
operation.
Thisꢀfeatureꢀallowsꢀtheꢀuserꢀtoꢀaccuratelyꢀadjustꢀtheꢀmodule’sꢀ
outputꢀvoltageꢀsetꢀpointꢀtoꢀaꢀspecifiedꢀlevel.ꢀꢀThisꢀisꢀachievedꢀ
byꢀconnectingꢀaꢀresistorꢀorꢀpotentiometerꢀfromꢀtheꢀTRIMꢀ
terminalꢀtoꢀeitherꢀtheꢀ+Voutꢀterminalꢀ(forꢀincreasedꢀVout)ꢀorꢀ
theꢀ-Voutꢀterminalꢀ(forꢀdecreasedꢀVout).ꢀꢀTheꢀformulaeꢀbelowꢀ
describeꢀtheꢀtrimꢀresistorꢀvalueꢀtoꢀobtainꢀaꢀVoutꢀchangeꢀofꢀ
D%.ꢀꢀVOꢀisꢀoutputꢀvoltageꢀpriorꢀtoꢀadjustmentꢀ(3.3V,ꢀ5V,ꢀ12V,ꢀ
15V,ꢀorꢀ24V).
ꢀVo(100ꢀ+ꢀD%)
ꢀꢀ1.225D%ꢀ
(100ꢀ+ꢀ2D%)
D%
_ꢀ
ꢀꢀꢀ
Radjꢀ-ꢀupꢀꢀ=ꢀ ꢀ
ꢀꢀ
ꢀ
ꢀW
(
)
ꢀ
ꢀ
ꢀ
100 ꢀ
D%
Radjꢀ-ꢀdownꢀ=ꢀ
(
ꢀ -ꢀ2
)ꢀ
ꢀW
Power Electronics Division, Americas
3400 E Britannia Drive, Tucson, Arizona 85706
Tel: 800.547.2537 Fax: 520.295.4197
Anyꢀdata,ꢀprices,ꢀdescriptionsꢀorꢀspecificationsꢀpresentedꢀhereinꢀareꢀsubjectꢀtoꢀrevisionꢀbyꢀC&DꢀTechnologies,ꢀInc.ꢀwithoutꢀnotice.ꢀꢀWhileꢀsuchꢀinformationꢀisꢀbelievedꢀtoꢀbeꢀ
accurateꢀasꢀindicatedꢀherein,ꢀC&DꢀTechnologies,ꢀInc.ꢀmakesꢀnoꢀwarrantyꢀandꢀherebyꢀdisclaimsꢀallꢀwarranties,ꢀexpressꢀorꢀimplied,ꢀꢀwithꢀregardꢀtoꢀtheꢀaccuracyꢀorꢀcomplete-
nessꢀofꢀsuchꢀinformation.ꢀꢀFurther,ꢀbecauseꢀtheꢀproduct(s)ꢀfeaturedꢀhereinꢀmayꢀbeꢀusedꢀunderꢀconditionsꢀbeyondꢀitsꢀcontrol,ꢀC&DꢀTechnologies,ꢀInc.ꢀherebyꢀdisclaimsꢀallꢀ
warranties,ꢀeitherꢀexpressꢀorꢀimplied,ꢀconcerningꢀtheꢀfitnessꢀorꢀsuitabilityꢀofꢀsuchꢀproduct(s)ꢀforꢀanyꢀparticularꢀuseꢀorꢀinꢀanyꢀspecificꢀapplicationꢀorꢀarisingꢀfromꢀanyꢀcourseꢀofꢀ
dealingꢀorꢀusageꢀofꢀtrade.ꢀꢀTheꢀuserꢀisꢀsolelyꢀresponsibleꢀforꢀdeterminingꢀtheꢀsuitabilityꢀofꢀtheꢀproduct(s)ꢀfeaturedꢀhereinꢀforꢀuser’sꢀintendedꢀpurposeꢀandꢀinꢀuser’sꢀspecificꢀ
application.ꢀC&DꢀTechnologies,ꢀInc.ꢀdoesꢀnotꢀꢀwarrantꢀorꢀrecommendꢀthatꢀanyꢀofꢀitsꢀproductsꢀbeꢀusedꢀinꢀanyꢀlifeꢀsupportꢀorꢀaviationꢀorꢀaerospaceꢀapplications.
Product: www.cd4power.com
4
VKA50xSC (Rev B) 07/2007
相关型号：
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