CMDM Series
15 Watt, Single Output
Rev B
2:1 Wide Input Voltage Range
Chassis Mount DC/DC Converter
FEATURES
APPLICATIONS
● Measurement
● Wireless Network
● Telecom/Datacom
● Industry Control System
● Semiconductor Equipment
● 15 Watts Output Power
● Output Current up to 4A
● High Efficiency up to 88%
● Fixed Switching Frequency
● Six-Sided Continuous Shield
● 2:1 Wide Input Voltage Range
● ISO9001 Certified Manufacturing Facilities
● Call Factory for More Output Power Options
● Compliant to RoHS EU Directive 2002/95/EC
● Options: Positive Logic and Negative Logic Remote ON/OFF
● Chassis Mount Options: Open Frame, U Channel, and Enclosed Types Available
SPECIFICATIONS: CMDM Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
GENERAL SPECIFICATIONS
Input Voltage Range ............ 12V nominal input....................... 9 - 18 VDC
Efficiency ........................................................................................see table
Switching Frequency .................................................................500KHz typ.
Isolation Voltage (Input to Output).........................................1600VDC min.
Isolation Resistance ...............................................................109 ohms min.
Isolation Capacitance ................................................................ 300pF max.
24V nominal input..................... 18 - 36 VDC
48V nominal input..................... 36 - 75 VDC
Input Surge Voltage (100ms max) ....... 12V input ..........................36 VDC
24V input ..........................50 VDC
48V input ........................100 VDC
Input Reflected Ripple Current (Note 2)........................................20mAp-p
Start Up Time (nominal Vin and constant resistive load).............20ms typ.
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature ................................ -40°C ~ +85°C (with derating)
Storage Temperature ..........................................................-55°C ~ +105°C
Maximum Case Temperature............................................................. 100°C
Relative Humidity...................................................................5% to 95% RH
Remote ON/OFF (Option) (Note 7)
(Positive Logic)............... DC-DC ON.............Open or 3.5V < 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 3.5V < Vr < 12V
Input Current of Remote Control Pin (nominal Vin) ...........-0.5mA ~ +1mA
Remote Off State Input Current (nominal Vin)...................................20mA
Thermal Impedance (Note 8)
Natural Convection.............................................................12°C / Watt
Natural Convection with Heat-Sink.....................................10°C / Watt
OUTPUT SPECIFICATIONS
Thermal Shock ..................................................................... MIL-STD-810F
Vibration ................................10~55Hz, 10G, 30 minutes along X, Y, and Z
MTBF (See Note 1) ..........................................................2.041 x 106 hours
Output Voltage..............................................................................see table
Voltage Accuracy (nominal Vin and full load) ...................................... ±1%
Output Current ..............................................................................see table
Output Power........................................................................ 15 watts max.
Line Regulation (LL to HL at FL)....................................................... ±0.5%
Load Regulation (min load to full load) ............................................. ±0.5%
Minimum Load (See Note 6) ........................................................see table
Ripple/Noise (20 MHz BW).......................................................... 50mVp-p
Temperature Coefficient ................................................. ±0.02% / °C max.
Transient Response Recovery Time (25% load step) .......................250us
PHYSICAL SPECIFICATIONS
Potting material of the DC/DC Converter ..........................Epoxy (UL94-V0)
Shielding of the DC/DC Converter.................................................. six-sided
Weight .............................................................................Approximately 6oz
Dimensions................................................... 4(L) x 2.2(W) x 0.81(H) inches
SAFETY & EMC
Approvals and Standards .................. IEC60950-1, UL60950-1, EN60950-1
EMI ............................EN55022 ......................................................Class A
PROTECTION SPECIFICATIONS
Air ± 8KV
ESD ....................EN61000-4-2……..
…….Perf. Criteria B
Over Voltage Protection................. 3.3V output ..................................3.9V
Contact ± 6KV
(zener diode clamp)
5V output ..................................6.2V
12V output ...................................15V
15V output ...................................18V
Radiated Immunity......EN61000-4-3....................... 10V/m Perf. Criteria A
Fast Transient.............EN61000-4-4.........................±2KV Perf. Criteria B
Surge .........................EN61000-4-5.........................±1KV Perf. Criteria B
Conducted Immunity...EN61000-4-6.................... 10 Vrms Perf. Criteria A
Over Load Protection (% of full load at nominal input).............. 150% max.
Short Circuit Protection....................................Hiccup, automatic recovery
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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