S T A N D A R D D C / D C C O N V E R T E R S
78
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
Efficiency:
75% to 94%
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:
-20C to +70C ambient
Storage Temperature Range:
-40C to +85C ambient
Maximum Baseplate Temperature:
+85C
Derating without heatsink:
Derate 2% per C beyond 45C case temperature
Humidity:
95% RH
Reliability (MTBF per Mil-HDBK-217):
>500,000 hours, +25C, Ground Benign
General Characteristics
Switching Frequency:
>25 kHz
Isolation:
Non-isolated
Agency Approvals:
CE Mark
MR series
20 to 144 watts
All specifications are typical at 25 degrees C with nominal input voltage and full output unless
otherwise noted. Specifications are subject to change without notice. All dimensions are typical.
79
Outline Drawing
EMC Characteristics
Conducted emissions:
EN55022
Radiated emissions:
EN55022
ESD:
EN61000-4-2
Radiated immunity:
EN61000-4-3
Fast Transients:
EN61000-4-4
Surge:
EN61000-4-5
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
1
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
1
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
-
+
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