CMJRW Series
Rev. B
10 Watt Single Output
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
UL
TUV
●
4:1 Wide Input Voltage Range
CB
●
International Safety Standard Approval
CE MARK
●
Call Factory for More Output Power Options
●
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
Input Voltage Range ............ 24V nominal input ........................ 9 - 36VDC
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.
Remote ON/OFF (Option) (See Note 2)
(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
Remote Off Input Current (nominal Vin) ............................................20mA
GENERAL SPECIFICATIONS
Efficiency ........................................................................................see table
Switching Frequency .................................................................300KHz typ.
Isolation Voltage (Input to Output)......................................... 1600VDC min.
Isolation Resistance ...............................................................10 ohms min.
Isolation Capacitance ................................................................ 300pF max.
9
ENVIRONMENTAL SPECIFICATIONS
Operating Temperature (See derating curves)
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
Thermal Impedance (See Note 5)
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 10 hours
6
OUTPUT SPECIFICATIONS
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
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............................................ 4.00(L) x 2.25(W) x 0.81(H) inches
PROTECTION SPECIFICATIONS
Over Voltage Protection................. 3.3V output ..................................3.9V
(zener diode clamp)
5V output ....................................6.2V
12V output ....................................15V
15V output ....................................18V
Over Load Protection (% of full load at nominal input).............. 150% max.
Short Circuit Protection. ...................................Hiccup, automatic recovery
SAFETY & EMC
Approvals and Standards .................. IEC60950-1, UL60950-1, EN60950-1
Conducted Emissions.........EN55022 .............................................. Class A
Radiated Emissions............EN55022 .............................................. Class A
EN55022 .............................................. Class B
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
CMJRW Series
Rev. B
10 Watt Single Output
Chassis Mount DC/DC Converter
4:1 Ultra Wide Input Voltage Range
OUTPUT VOLTAGE / CURRENT RATING CHART
Model
Number
CMJRW24S33-2500
CMJRW24S5-2000
CMJRW24S12-830
CMJRW24S15-660
CMJRW48S33-2500
CMJRW48S5-2000
CMJRW48S12-830
CMJRW48S15-660
48 VDC
(18 – 75 VDC)
24 VDC
(9 – 36 VDC)
Input
Range
Output
Voltage
3.3 VDC
5 VDC
12 VDC
15 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
Output
Current
2500mA
2000mA
830mA
670mA
2500mA
2000mA
830mA
670mA
Output
Input Current
(6)
Efficiency
(7)
Ripple & Noise
50mVp-p
50mVp-p
50mVp-p
50mVp-p
50mVp-p
50mVp-p
50mVp-p
50mVp-p
465mA
548mA
519mA
544mA
239mA
270mA
259mA
262mA
78%
80%
84%
81%
76%
81%
84%
84%
Capacitor
(8)
Load max
6800µF
4700µF
690µF
470µF
6800µF
4700µF
690µF
470µF
NOTES
1. The CMJRW Series requires a minimum 10% loading on the output to maintain specified regulation. Operation under
no-load condition will not damage these devices, however, they may not meet all listed specifications.
2. The ON/OFF control pin voltage is referenced to –Vin.
To order positive logic On/Off control add the suffix “-P” (Ex: CMJRW24S5-2000-P).
To order negative logic On/Off control add the suffix “-R” (Ex: CMJRW24S5-2000-R).
3. BELLCORE TR-NWT-000332. Case 1: 50% Stress, Temperature at 40ºC. (Ground fixed and controlled environment).
4. “I” Version is more efficient; therefore, it can be operated over a more extensive temperature range than the standard
version. Please add the suffix “-I” for industrial grade temperature range models.
5. Heat sink is optional, please consult factory for ordering details.
6. Maximum value at nominal input voltage and full load of standard type.
7. Typical value at nominal input voltage and no load.
8. Tested at minimum Vin and constant resistive load.
9. Chassis Mount Options: No suffix for open frame, “U” suffix for U Channel, and “E” suffix for Enclosed type.
DERATING CURVE
Wall Industries, Inc. 5 Watson Brook Road Exeter, NH 03833
603-778-2300 www.wallindustries.com Fax 603-778-9797
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