CMDMW Series
Rev. B
15 Watt Single Output
Chassis Mount DC/DC Converter
4:1 Ultra Wide Input Voltage Range
FEATURES
●
1500VDC Isolation
●
Six-Sided Shielding
●
MTBF>700,000 Hours
●
Remote On/Off Control
●
UL1950 Safety Approval
●
Internal SMT Construction
●
4:1 Ultra Wide Input Range
●
UL 94V-0 Package Material
●
Complies with EN55022 Class A
●
Call Factory for More Output Power Options
●
Chassis Mount Options: Open Frame, U Channel, and Enclosed Types Available
SPECIFICATIONS:
CMDMW Series
SPECIFICATION
INPUT (V
in
)
Operating Voltage Range
Start Voltage
Under Voltage Shutdown
Reverse Polarity Input Current
Short Circuit Input Power
Input Surge Voltage (1000ms)
OUTPUT (V
o
)
Output Voltage Range
Output Voltage Accuracy
Load Regulation
Line Regulation
Output Power
Output Current Range
Ripple & Noise (peak to peak)
Ripple & Noise (peak to peak)
Ripple & Noise
Transient Recovery Time
Transient Response Deviation
REMOTE ON/OFF
Supply On
Supply Off
Standby Input Current
Control Input Current (On)
Control Input Current (Off)
Control Common
PROTECTION
Over Power Protection
Short Circuit Protection
GENERAL
Efficiency
Switching Frequency
Isolation Voltage Rated
Isolation Voltage Test
Isolation Resistance
Isolation Capacitance
Internal Power Dissipation
ENVIRONMENTAL
Operating Temperature (Ambient)
Operating Temperature (Case)
Storage Temperature
Lead Temperature
Humidity
Cooling
RFI
Temperature Coefficient
MTBF
Conducted EMI
PHYSICAL
Weight
Dimensions
Flammability
Heatsink material
Heatsink finish
24V input models
48V input models
-0.7
-0.7
All specifications are based on 25°C, Nominal Input Voltage, and Maximum Output Current unless otherwise noted.
We reserve the right to change specifications based on technological advances.
TEST CONDITIONS
Min
Nom
24V input models
48V input models
24V input models
48V input models
8
15
7
13
9-36, 18-75
8.5
17
8
15
3500
50
100
See Rating Chart
±1.0
±2.0
±0.5
±1.0
±0.1
±0.5
15
See Rating Chart
55
80
100
15
300
500
±2
±4
Max
9
18
8.5
17
1
Unit
VDC
VDC
VDC
VDC
VDC
A
mW
VDC
VDC
%
%
%
W
mV
pk-pk
mV
pk-pk
mVrms
µs
%
Io = 10% to 100%
Vin = min. to max.
20MHz
Over Line, Load, and Temperature
25% load step change
25% load step change
Vin – RC = 5.0V
Vin – RC = 0V
2.5 to 5.5VDC or Open Circuit
-0.7
0.8
VDC
10
mA
50
mA
-1
mA
Referenced to negative input
120
Continuous
290
1500
1650
1000
See Rating Chart
330
400
KHz
VDC
VDC
MΩ
pF
mW
%
60 seconds
Flash Test for 1 second
500VDC
100KHz, 1V
1200
-40
-40
-50
1500
5,000
1.5mm from case for 10 seconds
MIL-HDBK-217F @ 25°C, Ground Benign
+60
°C
+100
°C
+125
°C
260
°C
95
%
Free air convection
Six-sided shielding, metal case
±0.01
±0.02
%/°C
700
Khours
EN55022 Class A
Approximately 6oz
4.00(L) x 2.25(W) x 0.81(H) inches
UL94V-0
Aluminum
Anodic treatment (black)
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
CMDMW Series
Rev. B
15 Watt Single Output
Chassis Mount DC/DC Converter
4:1 Ultra Wide Input Voltage Range
OUTPUT VOLTAGE / CURRENT RATING CHART
Model Number
CMDMW24S3.3-3000
CMDMW24S5-3000
CMDMW24S5.1-3000
CMDMW24S12-1250
CMDMW24S15-1000
CMDMW48S3.3-3000
CMDMW48S5-3000
CMDMW48S5.1-3000
CMDMW48S12-1250
CMDMW48S15-1000
48 VDC
(18 - 75 VDC)
24 VDC
(9 - 36 VDC)
Input Voltage
Output
Voltage
3.3 VDC
5 VDC
5.1 VDC
12 VDC
15 VDC
3.3 VDC
5 VDC
5.1 VDC
12 VDC
15 VDC
Output Current
Min
300 mA
300 mA
300 mA
125 mA
100 mA
300 mA
300 mA
300 mA
125 mA
100 mA
Max
3000mA
3000 mA
3000 mA 25mA (typ)
1250 mA
1000 mA
3000 mA
3000 mA
3000 mA 15mA (typ)
1250 mA
1000 mA
Input Current
No Load
Reflected
Max Load Ripple Current
528 mA
762 mA
735 mA
726 mA
771 mA
26 mA
381 mA
368 mA
363 mA
386 mA
30mA (typ)
40mA (typ)
Efficiency
(Typ)
78%
82%
81%
85%
86%
78%
82%
81%
85%
86%
Max Capacitive
Load
470 µF
470 µF
470 µF
470 µF
470 µF
470 µF
470 µF
470 µF
470 µF
470 µF
NOTES
1. Transient recovery time is measured to within 1% error band for a step change in output load of 75% to 100%.
2. Ripple and noise measured at 20MHz bandwidth.
3. The CMDMW series requires a minimum 10% load on the output to maintain specified regulation. Operation under no-load condition
will not damage these devices, however they may not meet all listed specifications.
4. Other input and output voltages may be available, please contact factory.
5. On/Off control is optional, please contact factory. Control voltage referenced to negative input (-Vin).
6. Heat-sink is optional, consult factory.
7. Chassis Mount Options: No suffix for open frame, “U” suffix for U Channel, and “E” suffix for Enclosed type.
BLOCK DIAGRAM
INPUT VOLTAGE TRANSIENT RATING
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
CMDMW Series
Rev. B
15 Watt Single Output
Chassis Mount DC/DC Converter
4:1 Ultra Wide Input Voltage Range
MECHANICAL DRAWING
Unit: inches [mm]
+ Out
3.66 [93.0]
.16 [4.06] 2X
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
.17 [4.3]
+ Vin
CNTL
-Vin
2.25 [57.2]
1.13 [28.6]
-Out
TRM
4.00 [101.6]
MODEL NAME
.81 [20.6]
LABEL
CMDMW Series
Rev. B
15 Watt Single Output
Chassis Mount DC/DC Converter
4:1 Ultra Wide Input Voltage Range
DESIGN & FEATURE CONSIDERATONS
Remote On/Off
Positive logic remote on/off turns the module on during a logic high voltage on the remote on/off pin, and off during a logic low. To turn the
power module on and off, the user must supply a switch to control the voltage between the on/off terminal and the -Vin terminal. The
switch can be an open collector or equivalent.
A logic low is -0.7V to 0.8V.
A logic high is 2.5V to 5.5V.
The maximum sink current at on/off terminal during a logic low is -1mA. The maximum allowable leakage current of the switch at on/off
terminal (2.5 to 5.5V) is 50uA.
Over Current 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
.
Efficiency vs Input Voltage
Efficiency vs Output Load
Derating Curve without Heatsink
Derating Curve with Heatsink
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
CMDMW Series
Rev. B
15 Watt Single Output
Chassis Mount DC/DC Converter
4:1 Ultra Wide Input Voltage Range
TEST CONFIGURATIONS
Input Reflected-Ripple Current Test Setup
Input reflected-ripple current is measured with an inductor Lin (4.7uH) and Cin (220uF, ESR < 1.0Ω 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.
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
100°C. The derating curves are determined from measurements obtained in an experimental apparatus.
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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