CMKR

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Document overview

• PDF pages: 3

Technical content

Page 1

APPLICATIONS

FEATURES

• Measurement
• Output Current up to 1A
• Wireless Network
• High Efficiency up to 83%
• Telecom/Datacom
• Fixed Switching Frequency
• Industry Control System
• Six-Sided Continuous Shield
• Semiconductor Equipment
• 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

Input Voltage Range CMKR......................... 12V nominal input .............................. 9-18VDC

24V nominal input ............................ 18-36VDC 48V nominal input ............................ 36-75VDC

CMKRW ..................... 24V nominal input .............................. 9-36VDC

48V nominal input ............................ 18-75VDC

Input Surge Voltage (100ms max) ....... 12V input ..........................36 VDC

24V input ..........................50 VDC 48V input ........................100 VDC

Input Reflected Ripple Current (nom. Vin and FL)........................20mAp-p

Start Up Time (nom. Vin and constant resistive load)..............450ms max.

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

(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.

Transient Response Recovery Time 25% load step change.................................................... (Single) 200us

PROTECTION SPECIFICATIONS

Over Load Protection (% of full load at nom. input) .................... 170% typ.

Short Circuit Protection. ............................Continuous, automatic recovery

GENERAL SPECIFICATIONS

Efficiency ........................................................................................see table

Switching Frequency CMKR ....................................................................................300KHz typ. CMKRW.................................................................................200KHz typ.

Isolation Voltage (Input to Output).........................................1600VDC min. Isolation Resistance ...............................................................109 ohms min.

Isolation Capacitance ................................................................ 300pF max.

ENVIRONMENTAL SPECIFICATIONS

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)

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

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

Air ± 8KV

ESD ....................EN61000-4-2…….. …….Perf. Criteria B

Contact ± 6KV

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

Due to advances in technology, specifications subject to change without notice

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Page 2

MODEL SELECTION GUIDE

NOTES

1. BELLCORE TR-NWT-000332. Case 1: 50% Stress, Temperature at 40ºC. (Ground fixed and controlled environment)

2. Maximum value at nominal input voltage and full load of standard type.

3. Typical value at nominal input voltage and no load.

4. Typical value at nominal input voltage and full load.

5. Test by minimum Vin and constant resistive load.

6. The ON/OFF control pin voltage is referenced to -Vin. To order positive logic ON-OFF control add the suffix “P” (Ex: CMKR48S5-1000P) To order negative logic ON-OFF control add the suffix “R” (Ex: CMKR48S5-1000R)

1. The industrial “I” suffix for the 2:1 input version is more efficient; therefore, it can be operated in a more extensive

temperature range than “standard” and “I” suffix 4:1 input versions. To order industrial temperature range (-40°C ~ +85°C) add the suffix “I” to the part number (Ex: CMKR48S5-1000I)

8. Heat sink is optional, consult factory.

9. Chassis Mount Options: No suffix for open frame, “U” suffix for U Channel, and “E” suffix for Enclosed type.

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Page 3

DERATING CURVE & EFFICIENCY GRAPHS

MECHANICAL DRAWING

Unit: inches [mm]

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