CMDD Series
60 Watt Single Output
Rev. B
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
● Fixed Switching Frequency
● No Minimum Load Required
● Approved for Basic Insulation
● 2:1 Wide Input Voltage Range
● 60 Watts Maximum Output power
● Call Factory for More Output Power Options
UL
TUV
CB
CE MARK (Pending)
● 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
Efficiency ........................................................................................see table
Switching Frequency .................................................................300KHz typ.
Isolation Voltage (Input to Output).........................................1600VDC min.
Isolation Voltage (Input to Case) ...........................................1600VDC min.
Isolation Voltage (Output to Case) ........................................1600VDC min.
Isolation Resistance ...............................................................109 ohms min.
Isolation Capacitance ............................................................. 1500pF max.
ENVIRONMENTAL SPECIFICATIONS
48V nominal input...................... 36 - 75VDC
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.
Input Voltage Variation......... dv/dt............................................ 5V/ms max
(Complies with ETS300 132 part 4.4)
Input Surge Voltage (100ms max) ............... 24V input ...................50VDC
Operating Ambient Temperature............. -40°C to +50°C (without derating)
48V input .................100VDC
+50°C to +105°C (with derating)
Input Reflected Ripple Current (nominal Vin and FL) ...................20mAp-p
Storage Temperature ..........................................................-55°C ~ +125°C
Maximum Case Temperature........................................................... +105°C
Relative Humidity...................................................................5% to 95% RH
Temperature Coefficient................................................... ±0.02% / °C max.
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
Thermal Impedance (See Note 3)
DC-DC OFF.............Short or 0V < Vr < 1.2V
Without Heat-Sink..................................................................9.2°C / Watt
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
With Heat-Sink.........................................................................7.6°C/Watt
Thermal Shock .................................................................... MIL-STD-810D
Vibration ................................10~55Hz, 10G, 30 minutes along X, Y, and Z
MTBF (See Note 2) ........Bellcore TR-NWT-000332............ 1.093 x 106 hrs
MIL-STD-217F ............................. 1.096 x 105 hrs
Output Voltage..............................................................................see table
Voltage Accuracy (nom Vin and full load)........................................... ±1%
Voltage Adjustability........................................................................... ±10%
Output Current ..............................................................................see table
Output Power........................................................................ 60 watts max.
Line Regulation (LL to HL at FL)....................................................... ±0.2%
Load Regulation (no load to 100% load)........................................... ±0.5%
Minimum Load .....................................................................................0mA
Output Ripple & Noise ..................................................................see table
Transient Response Recovery Time (25% load step change)...........250us
PROTECTION SPECIFICATIONS
PHYSICAL SPECIFICATIONS
Potting material of the DC/DC Converter ..........................Epoxy (UL94-V0)
Shielding of the DC/DC Converter............................................... six – sided
Weight .............................................................................Approximately 7oz
Dimensions............................................ 4.00(L) x 2.25(W) x 0.81(H) inches
SAFETY & EMC
Approvals and Standards .................IEC60950-1, UL60950-1, EN60950-1
Conducted Emissions.................EN55022.....................................Class A
Radiated Emissions....................................................................... EN55022
ESD ............................................EN61000-4-2.....................Perf. Criteria B
Radiated Immunity......................EN61000-4-3.....................Perf. Criteria A
Fast Transient.............................EN61000-4-4.....................Perf. Criteria B
Surge..........................................EN61000-4-5.....................Perf. Criteria B
Conducted Immunity...................EN61000-4-6.................... Perf. Criteria A
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
Over Load Protection (% of FL at nominal input)...................... 150% max.
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
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