Features
• Non-isolated DC/DC
Converters
• Wide Input Range
• Environmentally Sealed
Ideally Suited For:
• Transportation
• Computing
• Instrumentation
Input Characteristics
Input Voltage: Model Input Voltage Range
MR05 9 to 33 VDC
MR12 16 to 33 VDC
MR24 28 to 63 VDC
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Voltage Surge Protection: MOV
Inverse Polarity Protection: Internal reverse diode
Overload Protection: Via external fuse
Output Characteristics
Output Voltage Accuracy: 0 to 2%
Line and Load Regulation: < 1%
Ripple and Noise: <20 mV plus 1% pk-pk of Vout (0-30 MHz)
Transient Response/Recovery Time +/-3% (1mS)
Temperature Coefficient: <0.02%/degree C
Current Limiting: >120% maximum output
Short Circuit Protection: Continuous
Overvoltage Protection: External transient suppressor diode required
Environmental Characteristics
Operating Temperature Range: -20ºC to +70ºC ambient
Storage Temperature Range: -40ºC to +85ºC ambient
Maximum Baseplate Temperature: +85ºC
Derating without heatsink:
Derate 2% per ºC beyond 45ºC case temperature
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Reliability (MTBF per Mil-HDBK-217): >500,000 hours, +25ºC, Ground Benign
General Characteristics
Switching Frequency: >25 kHz
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Agency Approvals: CE Mark
MR series
20 to 144 watts
www.martekpower.com
>>1
Les Auberges 69770 Montrottier France Tel. 33 (0)1 69 88 83 97 Fax: +33 (0) 1 69 88 80 37 sales@martekpower.fr
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Outline Drawing
EMC Characteristics
Conducted emissions: EN55022
Radiated emissions: EN55022
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Radiated immunity: EN61000-4-3
Fast Transients: EN61000-4-4
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Available Models
Output Output
Model Voltage (VDC) Current (A) Case Code
MR054000 5 4 EC28 AK23
MR056000 5 6 EC28 AK23
MR1210000 12 10 VA32
MR246000 24 6 VA32
To order please specify model number and preferred case configuration i.e.
MR 05 4000 AK23
VA32
VA32
EC28
AK23
2.40
60.96
HEIGHT = 28mm
1.97
50.00
0.18
4.52
2.76
70.00
1.60
40.64
1.20
30.48
0.37
9.36
+Vi
-Vi
0Vo
+Vo
M3 X5
Ø1
1.38 (35.00)
0.39
9.76
3.2
81.28
HEIGHT = 23mm
0.15
3.86
3.50
89.00
2.20
55.88
1.10
27.94
-Vi
+Vi
+Vo
0Vo
2M3 X5
Ø1
1.75 (44.50)
0.15
3.81
ADJ.
2.50
63.50
0.75
19.05
1.00
25.40
0.59
15.00
3.74
95.00
2.68
68.00
1.08
27.30
0.40
10.16
0.40
10.16
0.40
10.16
0.30
7.62
1.34
34.00
3.94
100.00
0.10
2.50
4.13
105.00
1.26
32.00
0.55
14.00
0.43
11.00
0.39
10.00
Height
1.10
28.00
Height
0.91
23.00
+Vi -Vi +Vo -Vo
-
+
www.martekpower.com
>>2
Les Auberges 69770 Montrottier France Tel. 33 (0)1 69 88 83 97 Fax: +33 (0) 1 69 88 80 37 sales@martekpower.fr