Dual Output
+Vo
PFM Isolation Ref.Amp
LC
Filter
+Vin
-Vin
Com.
-Vo
Single Output
PFM Isolation Ref.Amp
LC
Filter
+Vin
-Vin
-Vo
+Vo
Block Diagram
Wide Range
2:1
Low Profile
I/O Isolation
1500
VDC
EN55022
EMI
Low Cost
$
Low Noise
MDW1000-Series power modules are low-profile
dc-dc converters that operate over input voltage ranges of
4.5-9VDC, 9-18VDC, 18-36VDC and 36-72VDC and provide
precisely regulated output voltages of 3.3V, 5V, 12V, 15V, {5V,
{12V and {15V.
The -40 ]+65 ] operating temperature range makes it ideal
for 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.
The modules have a maximum power rating of 2 and a typical
full-load efficiency of 80 ] , continuous short circuit, 60mV output
ripple, built-in filtering for both input and output minimizes the need
for external filtering.
yEMI Complies With EN55022 Class A
yLow Ripple and Noise
yMTBF > 1,000,000 Hours
yShort Circuit Protection
ySMT Technology
yIndustry Standard Pinout
yI/O Isolation 1500VDC
y2:1 Input Range
yHigh Efficiency up to 80%
Key Features
Single and Dual Outputs
2 Watts 2 :1 Wide Input Range DC/DC Converters
MDW1000 Series
TOTAL POWER INT'L
7757{17{67{15MDW1047
7757{21{83{12MDW1046
7162{50{200{5MDW1045
79553313415MDW1044
79534216712MDW1043
73571004005MDW1042
71
108
491255003.3
48
( 36 ~ 72 )
MDW1041
80110{17{67{15MDW1037
78112{21{83{12MDW1036
74119{50{200{5MDW1035
811083313415MDW1034
801094216712MDW1033
771091004005MDW1032
72
1510
961255003.3
24
( 18 ~ 36 )
MDW1031
78
226{17{67{15MDW1027
78224{21{83{12MDW1026
73242{50{200{5MDW1025
802203313415MDW1024
802094216712MDW1023
772171004005MDW1022
73
2520
1841255003.3
12
( 9 ~ 18 )
MDW1021
71598{17{67{15MDW1017
69615{21{83{12MDW1016
64667{50{200{5MDW1015
735823313415MDW1014
755344216712MDW1013
735481004005MDW1012
70
10040
4711255003.3
5
( 4.5 ~ 9 )
MDW1011
% (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
Free-Air ConvectionCooling
%95---Humidity
]+125-40Storage Temperature
]+90-40CaseOperating Temperature
]+65-40AmbientOperating Temperature
UnitMax.Min.ConditionsParameter
Environmental Specifications
Exceeding these values can damage the module. These are not continuous
operating ratings.
mW1,800---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
VDC11-0.75VDC 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 50%
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
on 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
MDW1000 Series
K Hours------1000MIL-HDBK-217F @ 25], Ground BenignMTBF
KHz---300---Switching Frequency
pF420250---100KHz,1VIsolation Capacitance
M[------1000500VDCIsolation Resistance
VDC------1650Flash Tested for 1 SecondIsolation Test Voltage
VDC------150060 SecondsIsolation Voltage
UnitMax.Typ.Min.ConditionsParameter
General Specifications
ContinuousOutput Short Circuit
%/]{0.02{0.01---Temperature Coefficient
%{5{3---Transient Response Deviation
uS300100---
25% Load Step Change
Transient Recovery Time
%------120Over Power Protection
mV rms.15------Ripple & Noise (20MHz)
mV P-P75------Over Line,Load & TempRipple & Noise (20MHz)
mV P-P5030---Ripple & Noise (20MHz)
%{0.75{0.5---Io=25% to 100%Load Regulation
%{0.5{0.3---Vin=Min. to Max.Line Regulation
%{2.0{1.0---Dual Output Balance LoadOutput Voltage Balance
%{2.0{1.0---Output Voltage Accuracy
UnitMax.Typ.Min.ConditionsParameter
Output Specifications
Pi FilterInput Filter
mW1500------Short Circuit Input Power
A1------
All Models
Reverse Polarity Input Current
3422---48V Input Models
1711---24V Input Models
8.56.5---12V Input Models
43.5---5V Input ModelsUnder Voltage Shortdown
36241648V Input Models
1812824V Input Models
974.512V Input Models
VDC
4.543.55V Input ModelsStart Voltage
UnitMax.Typ.Min.ModelParameter
Input Specifications
Note: # For each output .
uF4710047011017010002200Maximum Capacitive Load
Unit
{15V #{12V #{5V #
15V12V5V3.3VModels by Vout
Capacitive Load
MDW1000 Series
120mA Slow - Blow Type250mA Slow - Blow Type500mA Slow - Blow Type1000mA Slow - Blow Type
48V Input Models24V Input Models12V Input Models5V 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
5VDC Input Models
Input Voltage Transient Rating
MDW1000 Series
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 )
30
40
50
60
70
80
90
Load Current (%)
Efficiency (%)
2010 40 60 80 100
30
40
50
60
70
80
90
Load Current (%)
Efficiency(%)
2010 40 60 80 100
Efficiency vs Input Voltage ( Dual Output )Efficiency vs Input Voltage ( Single Output )
40
50
60
70
80
90
100
Input Voltage (V)
Effi
c
i
ency
(%)
Low Nom High
40
50
60
70
80
90
100
Input Voltage (V)
Efficiency (%)
Low Nom High
MDW1000 Series
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
simulated source impedance.
Capacitor Cin, offsets possible battery impedance.
Current ripple is measured at the input terminals of the
module, measurement bandwidth is 0-500KHz.
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 MDW1000 series has limitation of maximum
connected capacitance on the output.
The power module may operate in current limiting mode
during start-up, affecting the ramp-up and the startup time.
For optimum performance we recommend maximum
1000uF capacitive load for dual outputs and 4000uF capacitive
load for single outputs.
Connect capacitors at the point of load for best
performance.
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
on the input to insure startup.
By using a good quality low Equivalent Series Resistance
(ESR < 1.0[ at 100 kHz) capacitor of a 8.2uF for the 5V input
devices, a 3.3uF for the 12V input devices and a 1.5uF for the
24V and 48V devices, capacitor mounted close to the power
module helps ensure stability of the unit.
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 that 3.3uF
capacitors are used on output.
MDW1000 Series
+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 were determined from measurements
obtained in an experimental apparatus.
MDW1000 Series
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 environments and over a wide operating temperature range.
The encapsulant and outer shell of the unit have UL94V-0 ratings. Lead is solder plated surface to allow ease of solderability.
NC:No Connection.
UL94V-0
:Flammability
+Vin+Vin16
5.1g
:
Weight
-Vout-Vout10
+Vout+Vout9
Non-Conductive Black Plastic
:
Case Material
CommonNC8
NCNC7
0.94*0.54*0.3inches
-Vin-Vin1
23.8*13.7*7.62 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
23.8[0.94]
7.62[0.3]
3.8[0.15]
0.5[0.02]
0.5[0.02]
2.54[0.1]
13.7[0.54]
10.16[0.4]
178
910
16
Bottom
Side
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Mechanical Data
MDW1000 Series
