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Rev. B
CMDD Series
60 Watt Single Output
2:1 Wide Input Voltage Range
Chassis Mount DC/DC Converter
FEATURES
● Single Output Up to 14A
● High Efficiency up to 91%
● RoHS Directive Compliant
UL
● Fixed Switching Frequency
TUV
● No Minimum Load Required
CB
● Approved for Basic Insulation
CE MARK (Pending)
● 2:1 Wide Input Voltage Range
● 60 Watts Maximum Output power
● Call Factory for More Output Power Options
● Chassis Mount Options: Open Frame, U Channel, and Enclosed Types Available
SPECIFICATIONS: CMDD Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
GENERAL SPECIFICATIONS
Input Voltage Range ............ 24V nominal input ...................... 18 - 36VDC
48V nominal input ...................... 36 - 75VDC
Efficiency ........................................................................................see table
Under Voltage Lockout
24V nominal input............. DC-DC ON ..................................17VDC typ.
DC-DC OFF ................................15VDC typ.
48V nominal input............. DC-DC ON ..................................34VDC typ.
DC-DC OFF ................................32VDC typ.
Isolation Voltage (Input to Output)......................................... 1600VDC min.
Input Voltage Variation......... dv/dt ............................................ 5V/ms max
(Complies with ETS300 132 part 4.4)
Isolation Capacitance ............................................................. 1500pF max.
Input Surge Voltage (100ms max) ............... 24V input ...................50VDC
48V input .................100VDC
Input Reflected Ripple Current (nominal Vin and FL) ...................20mAp-p
Start Up Time (nominal Vin and constant resistive load)
Power Up................................................................................20ms max.
Remote ON/OFF ....................................................................20ms max.
Remote ON/OFF
Positive Logic .................. DC-DC ON ................Open or 3V < Vr < 12V
DC-DC OFF .............Short or 0V < Vr < 1.2V
Negative Logic ................. DC-DC ON ...............Short or 0V < Vr < 1.2V
DC-DC OFF ..............Open or 3V < Vr < 12V
Remote Off Input Current (nominal Vin) ..............................................3mA
OUTPUT SPECIFICATIONS
Switching Frequency .................................................................300KHz typ.
Isolation Voltage (Input to Case) ........................................... 1600VDC min.
Isolation Voltage (Output to Case) ........................................ 1600VDC min.
9
Isolation Resistance ...............................................................10 ohms min.
ENVIRONMENTAL SPECIFICATIONS
Operating Ambient Temperature ............. -40°C to +50°C (without derating)
+50°C to +105°C (with derating)
Storage Temperature .......................................................... -55°C ~ +125°C
Maximum Case Temperature ........................................................... +105°C
Relative Humidity...................................................................5% to 95% RH
Temperature Coefficient ................................................... ±0.02% / °C max.
Thermal Impedance (See Note 3)
Without Heat-Sink.................................................................. 9.2°C / Watt
With Heat-Sink......................................................................... 7.6°C/Watt
Thermal Shock .................................................................... MIL-STD-810D
Vibration ................................10~55Hz, 10G, 30 minutes along X, Y, and Z
6
Output Voltage ..............................................................................see table
MTBF (See Note 2) ........Bellcore TR-NWT-000332............ 1.093 x 10 hrs
5
MIL-STD-217F ............................. 1.096 x 10 hrs
Voltage Accuracy (nom Vin and full load) ........................................... ±1%
PHYSICAL SPECIFICATIONS
Voltage Adjustability........................................................................... ±10%
Potting material of the DC/DC Converter ..........................Epoxy (UL94-V0)
Output Current ..............................................................................see table
Shielding of the DC/DC Converter............................................... six – sided
Output Power ........................................................................ 60 watts max.
Weight .............................................................................Approximately 7oz
Line Regulation (LL to HL at FL)....................................................... ±0.2%
Dimensions............................................ 4.00(L) x 2.25(W) x 0.81(H) inches
Load Regulation (no load to 100% load)........................................... ±0.5%
SAFETY & EMC
Minimum Load ..................................................................................... 0mA
Approvals and Standards .................IEC60950-1, UL60950-1, EN60950-1
Output Ripple & Noise ..................................................................see table
Conducted Emissions................. EN55022 .....................................Class A
Transient Response Recovery Time (25% load step change)...........250us
Radiated Emissions....................................................................... EN55022
PROTECTION SPECIFICATIONS
ESD ............................................ EN61000-4-2.....................Perf. Criteria B
Over Voltage Protection......................3.3V Output .................. 3.7V - 5.4V
(Ctrl. voltage clamp)
5V Output ..................... 5.6V - 7.0V
12V Output ............... 13.5V - 19.6V
15V Output ............... 16.8V - 20.5V
Radiated Immunity...................... EN61000-4-3..................... Perf. Criteria A
Over Load Protection (% of FL at nominal input)...................... 150% max.
Conducted Immunity................... EN61000-4-6.................... Perf. Criteria A
Fast Transient............................. EN61000-4-4.....................Perf. Criteria B
Surge .......................................... EN61000-4-5.....................Perf. Criteria B
Short Circuit Protection .................................... Hiccup, automatic recovery
Over Temperature Protection ..................................................... 110°C typ
Due to advances in technology, specifications subject to change without notice
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
CMDD Series
60 Watt Single Output
2:1 Wide Input Voltage Range
Chassis Mount DC/DC Converter
Rev. B
OUTPUT VOLTAGE / CURRENT RATING CHART
Model Number
Input Range
CMDD24S3.3-14000
Output Current
Output
Voltage
Min. Load
Full Load
Output
Ripple & Noise
3.3 VDC
0mA
14,000mA
Input Current
(4)
(5)
Efficiency
(6)
Max Capacitive
(7)
Load
No load
Full Load
75mVp-p
90mA
2264mA
89%
36,000µF
CMDD24S5-12000
24VDC
5 VDC
0mA
12,000mA
75mVp-p
100mA
2874mA
91%
20,400µF
CMDD24S12-5000
(18 – 36 VDC)
12 VDC
0mA
5000mA
100mVp-p
120mA
2907mA
90%
3550µF
CMDD24S15-4000
15 VDC
0mA
4000mA
100mVp-p
120mA
2907mA
90%
2300µF
CMDD48S3.3-14000
3.3 VDC
0mA
14,000mA
75mVp-p
90mA
1132mA
89%
36,000µF
CMDD48S5-12000
48VDC
5 VDC
0mA
12,000mA
75mVp-p
100mA
1437mA
91%
20,400µF
CMDD48S12-5000
(36 – 75 VDC)
12 VDC
0mA
5000mA
100mVp-p
100mA
1453mA
90%
3550µF
15 VDC
0mA
4000mA
100mVp-p
100mA
1453mA
90%
2300µF
CMDD48S15-4000
NOTES
1. The ON/OFF control function: There are positive (standard) and negative logic (option). The pin voltage is referenced to negative input.
To order negative logic ON/OFF control add the suffix “R” to the part number (Ex: CMDD48S5-12000R).
2. BELLCORE TR-NWT-000332. Case I: 50% Stress, Temperature at 40ºC. (Ground fixed and controlled environment).
MIL-STD-217F Notice2 @ Ta=25°C, Full Load (Ground, Benign, controlled environment).
3. Heat sink is optional. Please call factory for ordering details.
4. Typical Value at nominal input voltage.
5. Maximum value at nominal input voltage and full load
6. Typical Value at nominal input voltage and full load.
7. Test by minimum Vin and constant resistive load.
8. Chassis Mount Options: No suffix for open frame, “U” suffix for U Channel, and “E” suffix for Enclosed type.
9. The “Sense” option is not available for this series.
DERATING CURVES & EFFICIENCY GRAPHS
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
CMDD Series
60 Watt Single Output
2:1 Wide Input Voltage Range
Chassis Mount DC/DC Converter
Rev. B
MECHANICAL DRAWING
Unit: inches [mm]
TRM
+ Out
-Out
-Vin
CNTL
+ Vin
4.00 [101.6]
MODEL NAME
LABEL
2.25 [57.2]
.17 [4.3]
1.13 [28.6]
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
.81 [20.6]