Dual Output
+Vo
PWM Isolation Ref.Amp
LC
Filter
+Vin
-Vin
Com.
-Vo
Single Output
PWM Isolation Ref.Amp
LC
Filter
+Vin
-Vin
-Vo
+Vo
Block Diagram
Wide Range
2:1
EN55022
EMI
I/O Isolation
1500
VDC
Low Cost
$
MKW1000 series of DC/DC converters, comprising 24
different models, is designed for a wide range of applications
including data communication equipments, mobile battery driven
equipments, distributed power systems, telecommunication
equipments, mixed analog/digital subsystems, process/machine
control equipments,computer peripheral systems and industrial robot
systems.
Packing up to 10W of power into a 2 x 1 x 0.4 inch package, with
efficiencies as high as 83%, the MKW1000 has wide input ranges of
9-18VDC, 18-36VDC and 36-75VDC and is available in output
voltages 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 for
external components.
yMTBF > 700,000 Hours
ySix-Side Shielded Case
yEMI Complies With EN55022 Class A
yIndustry Standard Pinout
yShort Circuit Protection
ySMT Technology
yI/O Isolation 1500VDC
y2:1 Input Range
yHigh Efficiency up to 83%
Key Features
Single and Dual Outputs
10 Watts 2:1 Wide Input Range DC/DC Converters
TOTAL POWER INT'L
TOTAL POWER INT'L Tel: 877-646-0900 Fax: 978-453-7395
Email: sales@total-power.com http://www.total-power.com
-1-
83251{17{333{15MKW1048
83251{21{416{12MKW1047
81257{50{1000{5MKW1046
832512141624MKW1045
832523467015MKW1044
822534283012MKW1043
8026010020005MKW1042
76
1210
21712024003.3
48
( 36 ~ 75 )
MKW1041
82507{17{333{15MKW1038
82507{21{416{12MKW1037
80521{50{1000{5MKW1036
835012141624MKW1035
825113467015MKW1034
825064283012MKW1033
7853410020005MKW1032
76
2520
43412024003.3
24
( 18 ~ 36 )
MKW1031
801041{17{333{15MKW1028
811027{21{416{12MKW1027
781068{50{1000{5MKW1026
8110272141624MKW1025
8010473467015MKW1024
8010384283012MKW1023
77108210020005MKW1022
72
5030
91712024003.3
12
( 9 ~ 18 )
MKW1021
% (Typ.)mA (Typ.)mA (Typ.)mA (Typ.)mAmAVDCVDC
@Max. Load@No Load@Max. LoadMin.Max.
EfficiencyReflected
Ripple
Current
Input CurrentOutput CurrentOutput
Voltage
Input
Voltage
Model
Number
Model Selection Guide
EN55022 Class AConducted EMI
Free-Air ConvectionCooling
%95---Humidity
]+125-40Storage Temperature
]+90-40CaseOperating Temperature
]+71-40AmbientOperating Temperature
UnitMax.Min.ConditionsParameter
Environmental Specifications
Exceeding these values can damage the module. These are not continuous
operating ratings.
mW5,000---Internal Power Dissipation
]260---Lead Temperature (1.5mm from case for 10 Sec.)
VDC100-0.748VDC Input Models
VDC50-0.724VDC Input Models
VDC25-0.712VDC Input Models
Input Surge Voltage
( 1000 mS )
UnitMax.Min.Parameter
Note :
1. Specifications typical at Ta=+25], resistive load,
nominal input voltage, rated output current unless
otherwise 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 0-20
MHz.
4. These power converters require a minimum
output loading to maintain specified regulation.
5. Operation under no-load conditions will not
damage these devices; however they may not
meet all listed specifications.
6. All DC/DC converters should be externally fused at
the front end for protection.
7. Other input and output voltage may be available,
please contact factory.
8. Specifications subject to change without notice.
Absolute Maximum Ratings
TOTAL POWER INT'L Tel: 877-646-0900 Fax: 978-453-7395
Email: sales@total-power.com http://www.total-power.com
-2-
K Hours------700MIL-HDBK-217F @ 25], Ground BenignMTBF
KHz340300260Switching Frequency
pF470150---100KHz,1VIsolation Capacitance
M[------1000500VDCIsolation Resistance
VDC------1650Flash Tested for 1 SecondsIsolation Test Voltage
VDC------150060 SecondsIsolation Voltage
UnitMax.Typ.Min.ConditionsParameter
General Specifications
ContinuousOutput Short Circuit
%/]{0.02{0.01---Temperature Coefficient
%{4{2---Transient Response Deviation
uS300150---
25% Load Step Change
Transient Recovery Time
%------120Over Power Protection
mV rms.15------Ripple & Noise (20MHz)
mV P-P100------Over Line,Load & TempRipple & Noise (20MHz)
mV P-P7550---Ripple & Noise (20MHz)
%{0.5{0.1---Io=10% to 100%Load Regulation
%{0.3{0.1---Vin=Min. to Max.Line Regulation
%{2.0{0.5---Dual Output Balance LoadOutput Voltage Balance
%{1.0{0.5---Output Voltage Accuracy
UnitMax.Typ.Min.ConditionsParameter
Output Specifications
Pi FilterInput Filter
mW45003500---Short Circuit Input Power
A2------
All Models
Reverse Polarity Input Current
34292548V Input Models
17151324V Input Models
8.58712V Input ModelsUnder Voltage Shortdown
36333048V Input Models
18171524V Input Models
VDC
98.5812V Input ModelsStart Voltage
UnitMax.Typ.Min.ModelParameter
Input Specifications
Note: # For each output .
uF47047047022002200220022002200Maximum Capacitive Load
Unit
{15V #{12V #{5V #
24V15V12V5V3.3VModels by Vout
Capacitive Load
750mA Slow - Blow Type1500mA Slow - Blow Type3000mA Slow - Blow Type
48V Input Models24V Input Models12V Input Models
Input Fuse Selection Guide
Vin ( VDC )
10uS
150
140
130
120
110
100
90
80
70
60
100uS 1mS 10mS 100mS
50
40
30
20
10
0
48VDC Input Models
24VDC Input Models
12VDC Input Models
Input Voltage Transient Rating
Derating Curve
〜
]
Ambient Temperature
Output Power (%)
0
20
40
60
80
100
-40 50 60 80 100 110
9070
400LFM
200LFM
100LFM
Natural
convection
Efficiency vs Output Load ( Dual Output )Efficiency vs Output Load ( Single Output )
20
30
40
50
60
70
80
90
Load Current (%)
Efficiency (%)
100
60402010 80
20
30
40
50
60
70
80
90
Load Current (%)
Efficiency (%)
100
60402010 80
Efficiency vs Input Voltage ( Dual Output )Efficiency vs Input Voltage ( Single Output )
50
60
70
80
90
100
Efficiency (%)
Input Voltage (V)
NomLow High
50
60
70
80
90
100
Efficiency (%)
Input Voltage (V)
NomLow High
Test Configurations
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with a inductor
Lin (4.7uH) and Cin (220uF, ESR < 1.0[ at 100 KHz) to
simulate source impedance.
Capacitor Cin, offsets possible battery impedance.
Current ripple is measured at the input terminals of the
module, 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 BNC
socket, measurement bandwidth is 0-20 MHz. Position the
load between 50 mm and 75 mm from the DC/DC Converter.
Design & Feature Considerations
Maximum Capacitive Load
The MKW1000 series has limitation of maximum
connected capacitance at the output.
The power module may be operated in current limiting
mode during start-up, affecting the ramp-up and the startup
time.
For optimum performance we recommend 470uF
maximum capacitive load for dual outputs and 2200uF
capacitive load for single outputs.
The maximum capacitance can be found in the data.
Overcurrent Protection
To provide protection in a fault (output overload) condition,
the unit is equipped with internal current limiting circuitry and
can endure current limiting for an unlimited duration. At the
point of current-limit inception, the unit shifts from voltage
control to current control. The unit operates normally once the
output current is brought back into its specified range.
Input Source Impedance
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power module.
In applications where power is supplied over long lines and
output loading is high, it may be necessary to use a capacitor
at the input to ensure startup.
Capacitor mounted close to the power module helps
ensure stability of the unit, it is recommended to use a good
quality low Equivalent Series Resistance (ESR < 1.0[ at 100
KHz) capacitor of a 15uF for the 12V input devices and a
4.7uF for the 24V and 48V devices.
Output Ripple Reduction
A good quality low ESR capacitor placed as close as
practicable across the load will give the best ripple and noise
performance.
To reduce output ripple, it is recommended to use 3.9uF
capacitors at the output.
+Out
-Out
+Vin
-Vin
DC / DC
Converter Load
Battery
+ Lin+
Cin
To Oscilloscope
Current
Probe
+Out
-Out
+Vin
-Vin
Dual Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
Com.
Scope
Cout
+Out
-Out
+Vin
-Vin
Single Output
DC / DC
Converter
Resistive
Load
Scope
Copper Strip
Cout
+
+Out
-Out
+Vin
-Vin
DC / DC
Converter Load
DC Power
Source
+
-
Cin
+Out
-Out
+Vin
-Vin Load
DC Power
Source
+
-
Cout
Com.
Dual Output
DC / DC
Converter
+Out
-Out
+Vin
-Vin
Load
DC Power
Source
+
-
Cout
Single Output
DC / DC
Converter
Thermal Considerations
Many conditions affect the thermal performance of the
power module, such as orientation, airflow over the module
and board spacing. To avoid exceeding the maximum
temperature rating of the components inside the power
module, the case temperature must be kept below 90°C.
The derating curves are determined from measurements
obtained in an experimental apparatus.
DUT
Position of air velocity
probe and thermocouple 50mm / 2in Air Flow
15mm / 0.6in
Units are encapsulated in a low thermal resistance molding compound which has excellent chemical resistance and electrical
properties 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.
UL94V-0
:Flammability
32g
:Weight
-Vout-Vout5
CommonNo Pin4
Metal With Non-Conductive Baseplate:Case Material
+Vout+Vout3
-Vin-Vin2
2.0*1.0*0.4 inches
+Vin+Vin1
50.8*25.4*10.2 mm
:Case Size
Dual OutputSingle OutputPin
Physical Characteristics
Pin Connections
{0.002{0.05Pin
.XXX{0.01.XX{0.25
.XX{0.01.X{0.25
InchesMillimetersTolerance
Dual Output
Single Output
10.2 [0.40]6.0 [0.24]
50.8 [2.00]
15.2 [0.60]
10.2 [0.40]
Bottom Side
12
345
10.20 [0.402] 10.20 [0.402] 2.5 [0.10]
20.30 [0.800]
1.00[ 0.039]
25.4 [1.00]
5.08 [0.200]
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Mechanical Data
