CMDB Series
40 Watt Single Output
2:1 Input Voltage Range
Rev. C
Chassis Mount DC/DC Converter
FEATURES
● High Efficiency up to 90%
UL E155800
TUV
CB
● Fixed Switching Frequency
● Six-Sided Continuous Shield
● 2:1 Wide Input Voltage Range
● International Safety Standard Approval
● Call Factory for More Output Power Options
CE MARK
● Chassis Mount Options: Open Frame, U Channel, and Enclosed Types Available
SPECIFICATIONS: CMDB Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
GENERAL SPECIFICATIONS
Input Voltage Range.............12V nominal input ......................... 9-18VDC
24V nominal input ....................... 18-36VDC
Efficiency ..................................................................................... see table
Switching Frequency............................................................... 300KHz typ.
48V nominal input ....................... 36-75VDC
Isolation Voltage
Under Voltage Lockout
12V nominal input.............DC-DC ON......................................... 9VDC
DC-DC OFF ....................................... 8VDC
Input to Output .................................................................1600VDC min.
Input to Case....................................................................1600VDC min.
Output to Case.................................................................1600VDC min.
Isolation Resistance............................................................. 109 ohms min.
Isolation Capacitance.............................................................1000pF max.
ENVIRONMENTAL SPECIFICATIONS
24V nominal input.............DC-DC ON.....................................17.8VDC
DC-DC OFF ..................................... 16VDC
48V nominal input.............DC-DC ON....................................... 36VDC
DC-DC OFF ..................................... 34VDC
Input Voltage Variation.........dv/dt........................................... 5V/ms max
(Complies with ETS300 132 part 4.4)
Operating Temperature................................-40°C to +85°C (with derating)
Storage Temperature.........................................................-55°C ~ +105°C
Maximum Case Temperature..........................................................+100°C
Relative Humidity.................................................................5% to 95% RH
Temperature Coefficient.................................................. ±0.02% / °C max.
Input Surge Voltage (100ms max) ............... 12V input.................. 36VDC
24V input.................. 50VDC
48V input.................100VDC
Input Reflected Ripple Current (nominal Vin and FL)...................40mAp-p
Thermal Impedance (See Note 6)
Start Up Time (nominal Vin and constant resistive load)
Natural Convection...........................................................9.2°C / Watt
Heat-Sink with 20LFM ........................................................7.6°C/Watt
Heat-Sink with 500LFM ......................................................2.8°C/Watt
Power Up................................................................................25ms typ.
Remote ON/OFF ....................................................................25ms typ.
Remote ON/OFF (See Note 1)
Thermal Shock................................................................... MIL-STD-810D
Vibration................................10~55Hz, 10G, 30 minutes along X, Y, and Z
MTBF (See Note 2).............................................................1.398 x 106 hrs
PHYSICAL SPECIFICATIONS
DC-DC ON ..................................................... Open or 3.5V < Vr < 12V
DC-DC OFF...................................................... Short or 0V < Vr < 1.2V
Remote Off Input Current (nominal Vin) ..........................................2.5mA
OUTPUT SPECIFICATIONS
Output Voltage............................................................................see table
Voltage Accuracy (nom Vin and full load) .......................................... ±1%
Voltage Adjustability (See Note 1)....................................................±10%
Output Current ............................................................................see table
Output Power...................................................................... 40 watts max.
Line Regulation (LL to HL at FL)..................................................... ±0.5%
Load Regulation (10% to 100% FL)................................................ ±0.5%
Minimum Load......................................................................................0%
Ripple/Noise (20MHz BW)...........................................................see table
Transient Response Recovery Time (25% load step change).......... 250us
PROTECTION SPECIFICATIONS
Potting material of the DC/DC Converter..........................Epoxy (UL94-V0)
Shielding of the DC/DC Converter..............................................six – sided
Weight .........................................................................Approximately 7 oz.
Dimensions...........................................4.00(L) x 2.25(W) x 0.81(H) inches
SAFETY & EMC
Approvals and Standards ................IEC60950-1, UL60950-1 (See Note 8),
EN60950-1
Conducted Emissions ................EN55022......................................Class A
Radiated Emissions ...................EN55022..................................... Class A
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
Over Voltage Protection ...................... 1.5V Output...........................3.9V
(Zener diode clamp)
1.8V Output...........................3.9V
2.5V Output...........................3.9V
3.3V Output...........................3.9V
5V Output..............................6.2V
12V Output.............................15V
15V Output.............................18V
Conducted Immunity
EN61000-4-6 ................... Perf. Criteria A
Over Load Protection (% of FL at nominal input) ..................... 150% max.
Short Circuit Protection ...................................Hiccup, automatic recovery
Over Temperature Protection................................................... 115°C typ.
Due to advances in technology, specifications subject to change without notice
Wall Industries, Inc. • Tel: 603-778-2300 • Toll Free: 888-597-9255 •
website: www.wallindustries.com • e-mail: sales@wallindustries.com
5/15/2019
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