CMKR / CMKRW Series
Up to 6 Watts
Single Output DC/DC Converter
2:1 and 4:1 Wide Input Voltage Range
Rev. E
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%
Ripple/Noise (20 MHz BW)..........................................................50mVp-p
Temperature Coefficient.................................................±0.02% / °C max.
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 (See Note 10),
EN60950-1
EMI ....................................EN55022............................................. Class A
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. • 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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