TOTAL POWER INT'L
MDW1000 Series
2 Watts 2 :1 Wide Input Range DC/DC Converters
Single and Dual Outputs
Key Features
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High Efficiency up to 80%
2:1 Input Range
I/O Isolation 1500VDC
Industry Standard Pinout
SMT Technology
Short Circuit Protection
MTBF > 1,000,000 Hours
Low Ripple and Noise
EMI Complies With EN55022 Class A
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.
$
Low Noise
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.
Low Cost
1500
VDC
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.
I/O Isolation
EMI
EN55022
2:1
Low Profile
Wide Range
Block Diagram
Single Output
+Vin
Dual Output
+Vo
LC
Filter
+Vin
+Vo
LC
Filter
Com.
-Vo
-Vin
PFM
Isolation
Ref.Amp
-Vo
-Vin
PFM
Isolation
Ref.Amp
MDW1000 Series
Model Selection Guide
Model
Number
MDW1011
MDW1012
MDW1013
MDW1014
MDW1015
MDW1016
MDW1017
MDW1021
MDW1022
MDW1023
MDW1024
MDW1025
MDW1026
MDW1027
MDW1031
MDW1032
MDW1033
MDW1034
MDW1035
MDW1036
MDW1037
MDW1041
MDW1042
MDW1043
MDW1044
MDW1045
MDW1046
MDW1047
Input
Voltage
Output
Voltage
VDC
VDC
Max.
mA
Min.
mA
@Max. Load
mA (Typ.)
3.3
5
12
15
{5
{12
{15
3.3
5
12
15
{5
{12
{15
3.3
5
12
15
{5
{12
{15
3.3
5
12
15
{5
{12
{15
500
400
167
134
{200
{83
{67
500
400
167
134
{200
{83
{67
500
400
167
134
{200
{83
{67
500
400
167
134
{200
{83
{67
125
100
42
33
{50
{21
{17
125
100
42
33
{50
{21
{17
125
100
42
33
{50
{21
{17
125
100
42
33
{50
{21
{17
471
548
534
582
667
615
598
184
217
209
220
242
224
226
96
109
109
108
119
112
110
49
57
53
55
62
57
57
5
( 4.5 ~ 9 )
12
( 9 ~ 18 )
24
( 18 ~ 36 )
48
( 36 ~ 72 )
Output Current
Input Current
Absolute Maximum Ratings
mA (Typ.)
40
100
20
25
10
15
8
10
Efficiency
@Max. Load
% (Typ.)
70
73
75
73
64
69
71
73
77
80
80
73
78
78
72
77
80
81
74
78
80
71
73
79
79
71
77
77
Note :
Parameter
5VDC Input Models
12VDC Input Models
Input Surge Voltage
( 1000 mS )
24VDC Input Models
48VDC Input Models
Lead Temperature (1.5mm from case for 10 Sec.)
Internal Power Dissipation
Min.
-0.7
-0.7
-0.7
-0.7
-----
Max.
11
25
50
100
260
1,800
Unit
VDC
VDC
VDC
VDC
]
mW
Exceeding these values can damage the module. These are not continuous
operating ratings.
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.
Environmental Specifications
Parameter
Operating Temperature
Operating Temperature
Storage Temperature
Humidity
Cooling
@No Load
mA (Typ.)
Reflected
Ripple
Current
Conditions
Ambient
Case
Min.
Max.
-40
+65
-40
+90
-40
+125
--95
Free-Air Convection
Unit
]
]
]
%
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.
MDW1000 Series
Input Specifications
Parameter
Start Voltage
Under Voltage Shortdown
Model
Min.
Typ.
Max.
4.5
5V Input Models
3.5
4
12V Input Models
4.5
7
9
24V Input Models
8
12
18
48V Input Models
16
24
36
5V Input Models
---
3.5
4
12V Input Models
---
6.5
8.5
24V Input Models
---
11
17
48V Input Models
---
22
34
---
---
1
A
---
---
1500
mW
Unit
Reverse Polarity Input Current
All Models
Short Circuit Input Power
Unit
Input Filter
VDC
Pi Filter
Output Specifications
Parameter
Conditions
Min.
Typ.
Max.
---
{1.0
{2.0
%
Dual Output Balance Load
---
{1.0
{2.0
%
Line Regulation
Vin=Min. to Max.
---
{0.3
{0.5
%
Load Regulation
Io=25% to 100%
---
{0.5
{0.75
%
---
30
50
mV P-P
Over Line,Load & Temp
---
---
75
mV P-P
Ripple & Noise (20MHz)
---
---
15
mV rms.
Over Power Protection
120
---
---
%
Transient Recovery Time
---
100
300
uS
Output Voltage Accuracy
Output Voltage Balance
Ripple & Noise (20MHz)
Ripple & Noise (20MHz)
25% Load Step Change
Transient Response Deviation
Temperature Coefficient
Output Short Circuit
---
{3
{5
%
---
{0.01
{0.02
%/]
Continuous
General Specifications
Parameter
Isolation Voltage
Isolation Test Voltage
Conditions
Min.
Typ.
Max.
Unit
60 Seconds
1500
---
---
VDC
Flash Tested for 1 Second
1650
---
---
VDC
Isolation Resistance
500VDC
1000
---
---
M[
Isolation Capacitance
100KHz,1V
---
250
420
pF
---
300
---
KHz
1000
---
---
K Hours
Switching Frequency
MTBF
MIL-HDBK-217F @ 25], Ground Benign
Capacitive Load
Models by Vout
3.3V
5V
12V
15V
{5V #
{12V #
{15V #
Unit
Maximum Capacitive Load
2200
1000
170
110
470
100
47
uF
Note: # For each output .
MDW1000 Series
Input Fuse Selection Guide
5V Input Models
12V Input Models
24V Input Models
48V Input Models
1000mA Slow - Blow Type
500mA Slow - Blow Type
250mA Slow - Blow Type
120mA Slow - Blow Type
Input Voltage Transient Rating
150
140
130
120
48VDC Input Models
110
Vin ( VDC )
100
90
80
70
24VDC Input Models
60
50
40
12VDC Input Models
30
20
5VDC Input Models
10
0
10uS
100uS
1mS
10mS
100mS
100
100
90
90
80
80
Efficiency (%)
Efficiency (%)
MDW1000 Series
70
60
50
40
70
60
50
Low
Nom
High
40
Low
Input Voltage (V)
High
Efficiency vs Input Voltage ( Dual Output )
90
90
80
80
70
70
Efficiency (%)
Efficiency(%)
Efficiency vs Input Voltage ( Single Output )
60
50
60
50
40
40
30
30
10
60
40
20
80
100
Load Current (%)
Efficiency vs Output Load ( Single Output )
80
60
100LFM
400LFM
Natural
convection
200LFM
40
20
0
〜
-40
50
60
70
90
80
Ambient Temperature
Derating Curve
]
100
10
20
40
60
80
Load Current (%)
Efficiency vs Output Load ( Dual Output )
100
Output Power (%)
Nom
Input Voltage (V)
110
100
MDW1000 Series
Test Configurations
Overcurrent Protection
Input Reflected-Ripple Current Test Setup
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.
To Oscilloscope
+
+
Battery
+Vin
Lin
DC / DC
Converter
Current
Probe
Cin
+Out
-Vin
Load
Input Source Impedance
-Out
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.
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.
+
+Vin
+Out
Single Output
DC / DC
Converter
-Vin
Copper Strip
Cout
DC Power
Source
Resistive
Scope
Load
+Vin
+
+Out
DC / DC
Converter
Load
Cin
-
-Vin
-Out
-Out
Output Ripple Reduction
+Vin
+Out
Dual Output
DC / DC
Converter
Com.
-Vin
-Out
Copper Strip
Cout
Scope
Cout
Scope
Resistive
Load
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.
+
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.
+Vin
+Out
Single Output
DC / DC
Converter
DC Power
Source
Cout
-
-Vin
-Out
+
+Vin
+Out
Dual Output
DC / DC Com.
Converter
DC Power
Source
-
-Vin
-Out
Load
Cout
Load
MDW1000 Series
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.
Position of air velocity
probe and thermocouple
15mm / 0.6in
50mm / 2in
Air Flow
DUT
MDW1000 Series
Mechanical Data
Connecting Pin Patterns
Top View ( 2.54 mm / 0.1 inch grids )
Single Output
Side
7.62[0.3]
0.5[0.02]
23.8[0.94]
3.8[0.15]
0.5[0.02]
7
8
10
9
10.16[0.4]
1
Bottom
16
Tolerance
Pin
Millimeters
Inches
.X{0.25
.XX{0.01
.XX{0.25
{0.05
.XXX{0.01
{0.002
Pin Connections
Dual Output
13.7[0.54]
2.54[0.1]
Physical Characteristics
Pin
Single Output
Dual Output
1
-Vin
-Vin
7
NC
NC
8
NC
Common
9
+Vout
+Vout
10
-Vout
-Vout
16
+Vin
+Vin
23.8*13.7*7.62 mm
Case Size
:
Case Material
:
Non-Conductive Black Plastic
Weight
:
5.1g
Flammability
:
UL94V-0
0.94*0.54*0.3inches
NC:No Connection.
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.