MKW1023资料

10 Watts 2:1 Wide Input Range DC/DC ConvertersSingle and Dual OutputsKey Features

yyyyyyyyyHigh Efficiency up to 83%2:1 Input RangeI/O Isolation 1500VDCSMT TechnologyShort Circuit ProtectionIndustry Standard PinoutEMI Complies With EN55022 Class ASix-Side Shielded CaseMTBF > 700,000 HoursMKW1000 series of DC/DC converters, comprising 24different models, is designed for a wide range of applicationsincluding data communication equipments, mobile battery drivenequipments, distributed power systems, telecommunication

equipments, mixed analog/digital subsystems, process/machine

control equipments,computer peripheral systems and industrial robotsystems.

Packing up to 10W of power into a 2 x 1 x 0.4 inch package, withefficiencies as high as 83%, the MKW1000 has wide input ranges of 9-18VDC, 18-36VDC and 36-75VDC and is available in outputvoltages of 3.3V, 5V, 12V, 15V, 24V, {5V, {12V and {15V.Other feathers include continuous short circuit protection,six-side shielded case and EN55022 level A conducted noise

compliance minimize design-in time, cost and eliminate the need forexternal components.

$Low Cost1500VDCI/O IsolationEMIEN550222:1Wide RangeBlock DiagramSingle Output

Dual Output

+VinLCFilter+Vo+VinLCFilter+VoCom.-VoPWMIsolationRef.AmpPWMIsolationRef.Amp-Vo-Vin-Vin元器件交易网www.cecb2b.com

Model Selection Guide

ModelNumberInputVoltageOutputVoltageOutput CurrentInput CurrentReflectedRippleCurrentmA (Typ.)EfficiencyVDCMKW1021MKW1022MKW1023MKW1024MKW1025MKW1026MKW1027MKW1028MKW1031MKW1032MKW1033MKW1034MKW1035MKW1036MKW1037MKW1038MKW1041MKW1042MKW1043MKW1044MKW1045MKW1046MKW1047MKW1048VDC3.35121524{5{12{153.35121524{5{12{153.35121524{5{12{15Max.mA24002000830670416{1000{416{33324002000830670416{1000{416{33324002000830670416{1000{416{333Min.mA120100423421{50{21{17120100423421{50{21{17120100423421{50{21{17@Max. LoadmA (Typ.)9171082103810471027106810271041434534506511501521507507217260253252251257251251@No LoadmA (Typ.)@Max. Load% (Typ.)72778080817881807678828283808282768082838381838312( 9 ~ 18 )305024( 18 ~ 36 )202548( 36 ~ 75 )1012Absolute Maximum Ratings

Parameter12VDC Input ModelsInput Surge Voltage24VDC Input Models( 1000 mS )48VDC Input ModelsLead Temperature (1.5mm from case for 10 Sec.)Internal Power DissipationMin.-0.7-0.7-0.7------Max.25501002605,000UnitVDCVDCVDC]mWNote :

1. Specifications typical at Ta=+25], resistive load,nominal input voltage, rated output current unlessotherwise noted.2. Transient recovery time is measured to within 1%error band for a step change in output load of 75%to 100%.3. Ripple & Noise measurement bandwidth is 0-20MHz.4. These power converters require a minimum output loading to maintain specified regulation.Exceeding these values can damage the module. These are not continuousoperating ratings.Environmental Specifications

ParameterOperating TemperatureOperating TemperatureStorage TemperatureHumidityCoolingConducted EMIConditionsAmbientCaseMin.Max.-40+71-40+90-40+125---95Free-Air ConvectionEN55022 Class AUnit]]]%5. Operation under no-load conditions will notdamage these devices; however they may notmeet all listed specifications.6. All DC/DC converters should be externally fused atthe front end for protection.7. Other input and output voltage may be available,please contact factory.8. Specifications subject to change without notice.元器件交易网www.cecb2b.com

Input Specifications

ParameterStart VoltageModel12V Input Models24V Input Models48V Input ModelsUnder Voltage Shortdown12V Input Models24V Input Models48V Input ModelsReverse Polarity Input CurrentShort Circuit Input PowerInput FilterAll ModelsMin.8153071325------Typ.8.5173381529---3500Pi FilterMax.918368.5173424500AmWVDCUnitOutput Specifications

ParameterOutput Voltage AccuracyOutput Voltage BalanceLine RegulationLoad RegulationRipple & Noise (20MHz)Ripple & Noise (20MHz)Ripple & Noise (20MHz)Over Power ProtectionTransient Recovery TimeTransient Response DeviationTemperature CoefficientOutput Short Circuit25% Load Step ChangeOver Line,Load & TempDual Output Balance LoadVin=Min. to Max.Io=10% to 100%ConditionsMin.---------------------120---------ContinuousTyp.{0.5{0.5{0.1{0.150---------150{2{0.01Max.{1.0{2.0{0.3{0.57510015---300{4{0.02Unit%%%%mV P-PmV P-PmV rms.%uS%%/]General Specifications

ParameterIsolation VoltageIsolation Test VoltageIsolation ResistanceIsolation CapacitanceSwitching FrequencyMTBF MIL-HDBK-217F @ 25], Ground BenignConditions60 SecondsFlash Tested for 1 Seconds500VDC100KHz,1VMin.150016501000---260700Typ.---------150300---Max.---------470340---UnitVDCVDCM[pFKHzK HoursCapacitive LoadModels by VoutMaximum Capacitive LoadNote: # For each output .3.3V22005V220012V220015V220024V2200{5V #470{12V #470{15V #470UnituF元器件交易网www.cecb2b.com

Input Fuse Selection Guide12V Input Models3000mA Slow - Blow Type24V Input Models1500mA Slow - Blow Type48V Input Models750mA Slow - Blow TypeInput Voltage Transient Rating

150140130120110100Vin ( VDC )908070605040302010010uS100uS1mS10mS100mS12VDC Input Models24VDC Input Models48VDC Input Models元器件交易网www.cecb2b.com

10090)%( yc80neiciffE706050LowNomHighInput Voltage (V)Efficiency vs Input Voltage ( Single Output )9080)%70( ycn60eiciff50E4030201020406080100Load Current (%)Efficiency vs Output Load ( Single Output )10080100LFM400LFM)%( Natural reconvection200LFMw60oP tuptu40O200〜-405060708090100110Ambient Temperature]Derating Curve10090)%( yc80neiciffE706050LowNomHighInput Voltage (V)Efficiency vs Input Voltage ( Dual Output )9080)%70( ycn60eiciff50E4030201020406080100Load Current (%)Efficiency vs Output Load ( Dual Output )元器件交易网www.cecb2b.com

Test ConfigurationsInput Reflected-Ripple Current Test Setup

To Oscilloscope+Vin+Out++LinCurrentDC / DCProbeConverterLoadBatteryCin-Vin-OutInput reflected-ripple current is measured with a inductorLin (4.7uH) and Cin (220uF, ESR < 1.0[ at 100 KHz) tosimulate source impedance.

Capacitor Cin, offsets possible battery impedance.Current ripple is measured at the input terminals of themodule, measurement bandwidth is 0-500 KHz.

Peak-to-Peak Output Noise Measurement Test

Use a Cout 0.47uF ceramic capacitor.

Scope measurement should be made by using a BNCsocket, measurement bandwidth is 0-20 MHz. Position theload between 50 mm and 75 mm from the DC/DC Converter.

+Vin+OutCopper StripSingle OutputDC / DCCoutScopeResistiveConverterLoad-Vin-Out+Vin+OutCopper StripDual OutputCoutScopeDC / DCCom.ResistiveConverterLoadCoutScope-Vin-OutDesign & Feature ConsiderationsMaximum Capacitive LoadThe MKW1000 series has limitation of maximumconnected capacitance at the output.

The power module may be operated in current limitingmode during start-up, affecting the ramp-up and the startuptime.

For optimum performance we recommend 470uFmaximum capacitive load for dual outputs and 2200uFcapacitive load for single outputs.

The maximum capacitance can be found in the data.

Overcurrent ProtectionTo provide protection in a fault (output overload) condition,the unit is equipped with internal current limiting circuitry andcan endure current limiting for an unlimited duration. At thepoint of current-limit inception, the unit shifts from voltagecontrol to current control. The unit operates normally once theoutput current is brought back into its specified range.

Input Source Impedance

The power module should be connected to a lowac-impedance input source. Highly inductive sourceimpedances can affect the stability of the power module.

In applications where power is supplied over long lines andoutput loading is high, it may be necessary to use a capacitorat the input to ensure startup.

Capacitor mounted close to the power module helpsensure stability of the unit, it is recommended to use a goodquality low Equivalent Series Resistance (ESR < 1.0[ at 100KHz) capacitor of a 15uF for the 12V input devices and a4.7uF for the 24V and 48V devices.

++Vin+OutDC Power+DC / DCSourceConverterLoadCin--Vin-OutOutput Ripple ReductionA good quality low ESR capacitor placed as close aspracticable across the load will give the best ripple and noiseperformance.

To reduce output ripple, it is recommended to use 3.9uFcapacitors at the output.

++Vin+OutDC PowerSingle OutputSourceDC / DCConverterCoutLoad--Vin-Out++Vin+OutDC PowerDual OutputSourceDC / DCCom.CoutConverter--Vin-OutLoad元器件交易网www.cecb2b.com

Thermal ConsiderationsMany conditions affect the thermal performance of thepower module, such as orientation, airflow over the moduleand board spacing. To avoid exceeding the maximumtemperature rating of the components inside the powermodule, the case temperature must be kept below 90°C.

The derating curves are determined from measurementsobtained in an experimental apparatus.

Position of air velocityprobe and thermocouple15mm / 0.6in50mm / 2inAir FlowDUT元器件交易网www.cecb2b.com

Mechanical Data

Top View ( 2.54 mm / 0.1 inch grids )Connecting Pin Patterns

Single Output10.20 [0.402]10.20 [0.402]2.5 [0.10]20.30 [0.800]1.00[ 0.039]345BottomSide50.8 [2.00]12Dual Output5.08 [0.200]10.2 [0.40]25.4 [1.00]6.0 [0.24]10.2 [0.40]ToleranceMillimeters.X{0.25.XX{0.25{0.0515.2 [0.60]Inches.XX{0.01.XXX{0.01{0.002PinPin ConnectionsPin12345Single Output+Vin-Vin+VoutNo Pin-VoutDual Output+Vin-Vin+VoutCommon-VoutPhysical Characteristics

50.8*25.4*10.2 mm2.0*1.0*0.4 inchesCase Size :Case Material :Metal With Non-Conductive BaseplateWeight Flammability:32g:UL94V-0Units are encapsulated in a low thermal resistance molding compound which has excellent chemical resistance and electricalproperties in high humidity environment and over a wide operating temperature range.The encapsulant and outer shell of the unit have UL94V-0 ratings. The leads are golden plated for better soldering.