25 to 50 Watt
2.28x2.40 Inch Package M
2:1 Input Range
o Efficiency up to 86%
o 300 kHz Switching Frequency
o 2:1 Input Range
o Regulated Single Output
o Continuous Short Circuit Protection
o Half Brick Size Meet Industrial Standard
MODEL NUMBER
INPUT VOLTAGE
OUTPUT
VOLTAGE
2.5 VDC
3.3 VDC
5 VDC
OUTPUT
CURRENT
10 A
10 A
10 A
INPUT CURRENT
% EFF
NO LOAD
FULL LOAD
2740 mA
3525 mA
5145 mA
50 mA
76
78
81
50MRS12W2.5LC
50MRS12W3.3LC
50MRS12W5LC
9-18 VDC
50MRS12W12LC
50MRS12W15LC
50MRS12W24LC
50MRS24W2.5LC
50MRS24W3.3LC
50MRS24W5LC
18-36 VDC
50MRS24W12LC
50MRS24W15LC
50MRS24W24LC
50MRS48W2.5LC
50MRS48W3.3LC
50MRS48W5LC
36-75 VDC
50MRS48W12LC
50MRS48W15LC
50MRS48W24LC
last up-date 25.05.2005
12 VDC
15 VDC
24 VDC
2.5 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
24 VDC
2.5 VDC
3.3 VDC
5 VDC
12 VDC
15 VDC
24 VDC
4.16 A
3.33 A
2.08 A
10 A
10 A
10 A
50 mA
4.16 A
2450 mA
3.33 A
2.08 A
10 A
10 A
10 A
50 mA
4.16 A
1220 mA
3.33 A
2.08 A
1209 mA
86
85
2419 mA
676 mA
870 mA
1250 mA
86
77
79
83
85
1353 mA
1740 mA
2540 mA
77
79
82
4950 mA
84
25 to 50 Watt - 2.28x2.40 Inch - Package M - 2:1 Input Range
S P E C I F I C AT I O N S
All Specifications Typical At Nominal Line, Full Load, and 25°C Unless Otherwise Noted
INPUT SPECIFICATIONS
Input Voltage Range
12 Vin power up
12 Vin power down
24 Vin power up
24 Vin power down
48 Vin power up
48 Vin power down
Logic compatibility
Module ON
Module OFF
2/5
2:1
8.8
8
17
16
34
32.5
V
V
V
V
V
V
Undervoltage lockout
Positiv Logic Remote ON/OFF
3)
Input Filter
Open Collector Ref. to -Input
Open Circuit
<0.8 VDC
Pi Type
OUTPUT SPECIFICATIONS
Voltage Accuracy
Transient Response
External Trim Adj. Range
2.5V, 3.3V, 5V
Ripple and Nois at 20 MHz BW
12V, 15V
25% Step Load Change
±1% max.
<500µ sec.
±10%
20 mV RMS max.
75 mV p-p max.
30 mV RMS max.
100 mV p-p max.
100 mV RMS max.
240 mV p-p max.
±0.03%/°C
Continuous
±0.2% max.
±0.2% max.
115-140%
110% ~ 150% Nominal Output
24V
Temperature Coefficient
Short Circuit Protection
Line Regulation
1)
Load Regulation
2)
Over Voltage Protection trip Range, % Vo nom.
Current Limit
NOTE:
1. Measured from High Line to Low Line.
2. Measured from Full Load to Zero Load.
3. Add Suffix "N" to the Model Number for Negative Logic Remote ON/OFF
GENERAL SPECIFICATION
Efficiency
Input / Output
Input / Case
Output / Case
see table
1500 VDC min.
1500 VDC min.
1500 VDC min.
10 MOhms min.
12/24 Vin
48 Vin
400 kHz
300 kHz
-40°C to +100°C
-55°C to +105°C
+100°C
Aluminium
2.28 x 2.40 x 0.5 Inches (57.9 x 61.0 x 12.7 mm)
Isolation Voltage
Isolation Resistance
Switching Frequency
Operating Case Temperature Range
Storage Temperature Range
Thermal Shut down, Case Temp.
Case Material
Dimensions
M + R Multitronik GmbH
Kaninchenbergweg 78 • 23564 Lübeck • Germany
Tel. (+49) 0451 - 60 99 50 • Fax (+49) 0451 - 60 46 95
www.multitronik.com
info@multitronik.com
vertrieb@mrmultitronik.de
25 to 50 Watt - 2.28x2.40 Inch - Package M - 2:1 Input Range
S P E C I F I C AT I O N S
All Specifications Typical At Nominal Line, Full Load, and 25°C Unless Otherwise Noted
3/5
MECHANICAL SPECIFICATIONS
Case "M"
PIN CONNECTIONS
1
2
3
4
5
6
7
8
9
+INPUT
REMOTE CONTROL
CASE
-INPUT
-OUTPUT
-SENSE
TRIM
+SENSE
+VOUT
APPLICATION NOTES
Remote ON/OFF Control
The 50MRS allows the user to switch the module on and off electronically by remote on/off feature. The 50MRS are available in
"positive logic" or "negative logic" (option) versions for remote on/off.
Logic State
(PIN2)
Logic Low-
Switch Closed
Logic High-
Switch Open
Negative Logic
Positive Logic
Module on
Module off
Module off
Module on
External Output Trimming
Output may optionally be externally
trimmed (±10%) with a fixed resistor
or an external trimpot as shown.
M + R Multitronik GmbH
Kaninchenbergweg 78 • 23564 Lübeck • Germany
Tel. (+49) 0451 - 60 99 50 • Fax (+49) 0451 - 60 46 95
www.multitronik.com
info@multitronik.com
vertrieb@mrmultitronik.de
25 to 50 Watt - 2.28x2.40 Inch - Package M - 2:1 Input Range
S P E C I F I C AT I O N S
All Specifications Typical At Nominal Line, Full Load, and 25°C Unless Otherwise Noted
4/5
APPLICATION NOTES
Output Noise
The output noise is measured with 10µF tantalum capacitor and 1.0µF ceramic capacitor across output.
Derating
The operating case temperature range of 50MRS... series is -40°C to +100°C. When operating the 50MRS..., proper derating or
cooling is needed.
The following curve is the derating curve of 50MRS... without heat sink.
M + R Multitronik GmbH
Kaninchenbergweg 78 • 23564 Lübeck • Germany
Tel. (+49) 0451 - 60 99 50 • Fax (+49) 0451 - 60 46 95
www.multitronik.com
info@multitronik.com
vertrieb@mrmultitronik.de
25 to 50 Watt - 2.28x2.40 Inch - Package M - 2:1 Input Range
S P E C I F I C AT I O N S
All Specifications Typical At Nominal Line, Full Load, and 25°C Unless Otherwise Noted
5/5
APPLICATION NOTES
Where:
The power dissipation (Pd):
Pd = Pi - Po = Po (1-
η ) / η
The thermal resistance are list below:
Chart of Thermal Resistance vs Air Flow:
AIR FLOW RATE
Natural Convection 20 ft./min. (0.1 m/s)
100 ft./min. (0.5 m/s)
200 ft./min. (1.0 m/s)
300 ft./min. (1.5 m/s)
400 ft./min. (2.0 m/s)
500 ft./min. (2.5 m/s)
600 ft./min. (3.0 m/s)
700 ft./min. (3.5 m/s)
800 ft./min. (4.0 m/s)
TYPICAL Rca
7.12°C/W
6.21°C/W
5.17°C/W
4.29°C/W
3.64°C/W
2.96°C/W
2.53°C/W
2.37°C/W
2.19°C/W
The temperature rise (ΔT):
ΔT
=
ΔPd
* Rca
N O T I C E:
The information in this document has been carefully checked. However, no responsibility is assumed for inaccuracies!
Specifications can be changed without notice. The latest and most complete information can be found on our website.
M + R Multitronik GmbH
Kaninchenbergweg 78 • 23564 Lübeck • Germany
Tel. (+49) 0451 - 60 99 50 • Fax (+49) 0451 - 60 46 95
www.multitronik.com
info@multitronik.com
vertrieb@mrmultitronik.de
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