CMKR / CMKRW Series
Up to 6 Watts
Single Output DC/DC Converter
2:1 and 4:1 Wide Input Voltage Range
Rev. D
APPLICATIONS
● Measurement
FEATURES
● Output Current up to 1A
● Wireless Network
● High Efficiency up to 83%
● Telecom/Datacom
● Industry Control System
● Semiconductor Equipment
● Fixed Switching Frequency
● Six-Sided Continuous Shield
● 2:1 and 4:1 Wide Input Voltage Range
● ISO9001 Certified Manufacturing Facilities
● Call Factory for More Output Power Options
● Compliant to RoHS EU Directive 2002/95/EC
● Chassis Mount Options: Open Frame, U Channel, and Enclosed Types Available
● Options: Positive Logic and Negative Logic Remote ON/OFF, Industrial Temperature
SPECIFICATIONS: CMKR / CMKRW Series
All specifications apply @ 25°C ambient unless otherwise noted
INPUT SPECIFICATIONS
GENERAL SPECIFICATIONS
Input Voltage Range
Efficiency ........................................................................................see table
CMKR......................... 12V nominal input.............................. 9-18VDC
24V nominal input............................ 18-36VDC
48V nominal input............................ 36-75VDC
Switching Frequency
CMKR ....................................................................................300KHz typ.
CMKRW.................................................................................200KHz typ.
CMKRW ..................... 24V nominal input.............................. 9-36VDC
48V nominal input............................ 18-75VDC
Isolation Voltage (Input to Output).........................................1600VDC min.
Isolation Resistance ...............................................................109 ohms min.
Isolation Capacitance ................................................................ 300pF max.
Input Surge Voltage (100ms max) ....... 12V input ..........................36 VDC
24V input ..........................50 VDC
48V input ........................100 VDC
ENVIRONMENTAL SPECIFICATIONS
Input Reflected Ripple Current (nom. Vin and FL)........................20mAp-p
Start Up Time (nom. Vin and constant resistive load)..............450ms max.
Operating Temperature
Standard .................................................... -25°C ~ +85°C (with derating)
“I” suffix (See Note 7)................................. -40°C ~ +85°C (non-derating)
“I” suffix (CMKRW series).......................... -40°C ~ +85°C (with derating)
Remote ON/OFF (Option) (See Note 6)
(Positive Logic)............... DC-DC ON.............Open or 3.5V < Vr < 12V
DC-DC OFF.............Short or 0V < Vr < 1.2V
Storage Temperature ..........................................................-55°C ~ +105°C
Maximum Case Temperature............................................................. 100°C
Relative Humidity...................................................................5% to 95% RH
Thermal Shock ..................................................................... MIL-STD-810F
Vibration ................................10~55Hz, 10G, 30 minutes along X, Y, and Z
MTBF (See Note 1) ..........................................................3.145 x 106 hours
(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)..................................2.5mA
OUTPUT SPECIFICATIONS
Output Voltage..............................................................................see table
Voltage Accuracy (nominal Vin and full load) ...................................... ±1%
Output Current ..............................................................................see table
Output Power......................................................................... 6 Watts max.
Line Regulation (LL to HL at FL)....................................................... ±0.2%
Load Regulation (no load to full load) .......... Single Output.............. ±0.2%
Cross Regulation (Dual) (Asymmetrical load 25% / 100% FL) ............ ±5%
Minimum Load ....................................................................................... 0%
PHYSICAL SPECIFICATIONS
Weight .............................................................................Approximately 6oz
Dimensions................................................... 4(L) x 2.2(W) x 0.81(H) inches
Potting material of the DC/DC converter ...........................Epoxy (UL94-V0)
Shielding of the DC/DC converter .................................................. six-sided
SAFETY & EMC
Approvals and Standards .................. IEC60950-1, UL60950-1, EN60950-1
EMI .....................................EN55022 ..............................................Class A
Ripple/Noise (20 MHz BW)...........................................................50mVp-p
Temperature Coefficient ................................................. ±0.02% / °C max.
Air ± 8KV
Contact ± 6KV
ESD ....................EN61000-4-2……..
…….Perf. Criteria B
Transient Response Recovery Time
25% load step change.................................................... (Single) 200us
Radiated Immunity..............EN61000-4-3............... 10V/m Perf. Criteria A
Fast Transient.....................EN61000-4-4.................±2KV Perf. Criteria B
Surge (See Note 9).............EN61000-4-5.................±1KV Perf. Criteria B
Conducted Immunity...........EN61000-4-6............ 10 Vrms Perf. Criteria A
PROTECTION SPECIFICATIONS
Over Load Protection (% of full load at nom. input) .................... 170% typ.
Short Circuit Protection.............................Continuous, 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
03/15/2010
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