CMJRW Series
10 Watt Single Output
Rev. B
Chassis Mount DC/DC Converter
4:1 Ultra Wide Input Voltage Range
FEATURES
● High Efficiency up to 86%
● Fixed Switching Frequency
● Six-Sided Continuous Shield
● 4:1 Wide Input Voltage Range
● International Safety Standard Approval
● Call Factory for More Output Power Options
UL
TUV
CB
CE MARK
● Options: Add suffix “-I” for Extended Operating Temperature Range
● Chassis Mount Options: Open Frame, U Channel, and Enclosed Types Available
SPECIFICATIONS: CMJRW Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
GENERAL SPECIFICATIONS
Input Voltage Range ............ 24V nominal input........................ 9 - 36VDC
Efficiency ........................................................................................see table
Switching Frequency .................................................................300KHz typ.
Isolation Voltage (Input to Output).........................................1600VDC min.
Isolation Resistance ...............................................................109 ohms min.
Isolation Capacitance ................................................................ 300pF max.
48V nominal input...................... 18 - 75VDC
Input Surge Voltage (100ms max) ....... 24V input ...........................50VDC
48V input .........................100VDC
Input Reflected Ripple Current......................................................30mAp-p
(nominal Vin and full load)
Start Up Time (nominal Vin and constant resistive load).............20ms typ.
ENVIRONMENTAL SPECIFICATIONS
Remote ON/OFF (Option) (See Note 2)
Operating Temperature (See derating curves)
(Positive Logic)............... DC-DC ON.............Open or 3.5V < Vr < 12V
DC-DC OFF.............Short or 0V < Vr < 1.2V
Standard............................................... -25°C ~ +85°C (with derating)
“I” (See Note 4)...................................... -40°C ~ +85°C (with derating)
Storage Temperature ..........................................................-55°C ~ +105°C
Maximum Case Temperature............................................................. 100°C
Relative Humidity...................................................................5% to 95% RH
(Negative Logic) ............. DC-DC ON...............Short or 0V < Vr < 1.2V
DC-DC OFF...........Open or 3.5V < Vr < 12V
Remote Off Input Current (nominal Vin) ............................................20mA
OUTPUT SPECIFICATIONS
Thermal Impedance (See Note 5)
Output Voltage..............................................................................see table
Voltage Accuracy (nominal Vin and full load) ...................................... ±1%
Output Current ..............................................................................see table
Output Power........................................................................ 10 watts max.
Line Regulation (LL to HL at FL)....................................................... ±0.2%
Load Regulation (10% - 100 % FL).................................................. ±0.5%
Minimum Load (See Note 1) ..............................................10% of full load
Natural Convection.............................................................12°C / Watt
Natural Convection with Heat-Sink.....................................10°C / Watt
Thermal Shock .................................................................... MIL-STD-810D
Vibration ................................10~55Hz, 10G, 30 minutes along X, Y, and Z
MTBF (See Note 3) ..........................................................1.976 x 106 hours
PHYSICAL SPECIFICATIONS
Potting material of the DC/DC Converter ..........................Epoxy (UL94-V0)
Shielding of the DC/DC Converter.................................................. six-sided
Weight .............................................................................Approximately 6oz
Dimensions............................................ 4.00(L) x 2.25(W) x 0.81(H) inches
Ripple/Noise (20 MHz BW)...........................................................50mVp-p
Temperature Coefficient ................................................. ±0.02% / °C max.
Transient Response Recovery Time (25% load step) .......................250us
PROTECTION SPECIFICATIONS
SAFETY & EMC
Approvals and Standards .................. IEC60950-1, UL60950-1, EN60950-1
Over Voltage Protection................. 3.3V output ..................................3.9V
(zener diode clamp)
5V output ....................................6.2V
12V output ....................................15V
15V output ....................................18V
Conducted Emissions.........EN55022 ..............................................Class A
Radiated Emissions............EN55022 ..............................................Class A
EN55022 ..............................................Class B
Over Load Protection (% of full load at nominal input).............. 150% max.
Short Circuit Protection....................................Hiccup, automatic recovery
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
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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