MR2011S
Series
Ultra-Wide Input, 20W
Compact, Railway
DC/DC Converters
Electrical Specifications
Key Features:
•
20W Output Power
•
40 -160 VDC Input Range
•
1,500 VDC Isolation
•
Efficiency to 89%
•
Compact 1 x 2 Inch Case
•
-40°C to +85°C Operation
•
Industry Standard Pin-Out
•
Chassis Mount Option
•
DIN Rail Mount Option
Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice.
Input
Parameter
Input Voltage Range
Input Start Voltage
Under Voltage Shutdown
Input Filter
Conditions
Min.
40.0
I
OUT
= 100% 36.0
(Pi)
Filter
Typ.
110.0
Max.
160.0
39.8
Units
VDC
VDC
VDC
Output
Parameter
Output Voltage Accuracy
Output Trim Range
Line Regulation
Load Regulation
Ripple & Noise (20 MHz)
Transient Recovery Time, See Note 2
Transient Response Deviation
Output Power Protection
Temperature Coefficient
Output Short Circuit, See Note 3
Conditions
Typ.
±1.0
±10
V
IN
= Min to Max
±0.2
±0.5
I
OUT
= 10% to 100%
See Note 1
75
500
25% Load Step Change
±3.0
110
130
±0.02
Continuous (Autorecovery)
Min.
1,500
1,000
Typ.
Min.
Max.
±3.0
±0.5
±1.0
100
800
±5.0
170
Units
%
%
%
%
mV P - P
µSec
%
%
%/°C
General
Parameter
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
Conditions
60 Seconds
500 VDC
100 kHz/0.1V
Max.
Units
VDC
M
pF
kHz
Units
°C
°C
%
2,000
300
Min.
-40
Typ.
+25
Max.
+85
+105
+125
95
Environmental
Parameter
Operating Temperature Range
Storage Temperature Range
Cooling
Humidity
Physical
Case Size
Case Material
Weight
Conditions
Ambient
Case
-55
Free Air Convection
RH, Non-condensing
See Mechanical Diagram (Page 4)
Aluminum Alloy With Non-Conductive Base (UL94-V0)
0.99 Oz (28g)
Conditions
See Note 4
See Note 4
Min.
2.5
0
Typ.
Max.
12.0
1.2
Units
VDC
VDC
mA
Units
MHours
Remote On/Off
MicroPower Direct
292 Page Street
Suite D
Stoughton, MA 02072
USA
T:
(781) 344-8226
F:
(781) 344-8481
E:
sales@micropowerdirect.com
W:
www.micropowerdirect.com
Parameter
Unit On
Unit Off
Off Idle Current
1.0
Conditions
MIL HDBK 217F, 25°C, Gnd Benign
Displacement Range
Acceleration
Conditions
24 VDC Input
1.5 mm From Case for 10 Sec
Min.
1.0
Typ.
Max.
7.5 mm
2G
Min.
-0.7
Typ.
Max.
200.0
300
Reliability Specifications
Parameter
MTBF
Vibration, 5 - 150 Hz
Absolute Maximum Ratings
Parameter
Input Voltage Surge (1 Sec)
Lead Temperature
Units
VDC
°C
Caution: Exceeding Absolute Maximum Ratings may damage the module. These are not continuous operating ratings.
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Model Selection Guide
Input
Model
Number
MR2011S-05RU
MR2011S-12RU
MR2011S-15RU
MR2011S-24RU
Voltage
(VDC)
Nominal
110
110
110
110
Range
40 - 160
40 - 160
40 - 160
40 - 160
Current
(mA)
Full-Load No-Load
204
15
206
8
206
8
206
8
Voltage
(VDC)
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Output
Current
(mA, Max)
Current
(mA, Min)
Efficiency
(%, Typ)
Over
Fuse
Voltage Capacitive
Rating
Load
Protection
Slow-Blow
(VDC Typ)
(µF, Max)
(mA)
5.0
12.0
15.0
24.0
4,000
1,667
1,333
833
200
83
67
42
89
88
88
88
6.2
15.0
18.0
28.8
4,020
1,600
1,000
470
400
400
400
400
Notes:
1. When measuring output ripple, it is recommended that an external ceramic capacitor
(approx 10 µF) be placed from the +V
OUT
to the -V
OUT
pins.
2. Transient recovery is measured to within a 1% error band for a load step change
of 25%.
3. Short circuit protection is provided by a “hiccup mode” circuit.
4. The maximum control current at the on/off pin (pin 6) during a logic high is 50
µA.
The
maximum control current to the on/off pin at logic low (-0.7V to 0.8V) is 1 mA. If the
on/off pin is left open, the unit operates. If it is grounded, the unit will shut off.
5. These units should not be operated with a load under 5% of full load. Operation at no-load
will not damage the unit, but they may not meet all specifications.
6. These units should not be operated over +85°C. Exceeding +85°C may damage the unit.
7. It is recommended that a fuse be used on the input of a power supply for protection. See
the Model Selection table above for the correct rating.
Derating Curve
Efficiency vs Input Voltage
(Full Load)
Efficiency vs Output Power
(V
IN
= 110 VDC)
External Trim
External Trim Notes:
An external resistor can be used to adjust the converter output up/down by about
10%. The connection is shown in the diagram at left.
The required resistor value
is calculated by the formulas:
R
Trim UP =
R
TRIM
= A
$
-
2
- R
3
R
2
A
R
Trim Down =
R
TRIM
= A
$
-
1
- R
3
R
1
A
If not used
Where A =
V
REF
$
R
1
V
TRIM
- V
REF
-
Where A = V
TRIM
V
REF
$
R
2
V
REF
Where R
TRIM
= The value of the external trim resistor
V
TRIM
= The amount of voltage adjustment required
The value of R
1
, R
2
, R
3
and V
REF
are given in the table below.
Parameter
R
1
(k )
R
2
(k )
R
3
(k )
V
REF
(V)
292 Page Street Ste D Stoughton, MA 02072
5.0
2.883
2.864
10.00
2.50
Output Voltage
(VDC)
12
15
24
10.971
14.497
24.872
2.864
2.864
2.864
17.80
17.80
20.00
2.50
2.50
2.50
•
TEL: (781) 344-8226
•
FAX: (781) 344-8481
•
E-Mail: sales@micropowerdirect.com
EMC Specifications
Parameter
Transient Input Voltage
See Note 1
Standard
RIA 12
EN 50155
Maximum Input Voltage See Note 1
Radiated Emissions
Conducted Emissions
ESD
RS
EFT
Surge
CS
Voltage Dips
See Note 2
See Note 2
Criteria
A
B
B
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Specification
385V/20 mS
1,800V (5/50
µS,
50 or 100
8,400V (0.05/0.1
µS,
100
Class B
Class B
±4 kV Contact
10V/m
±4 kV
±2 kV/±4 kV
3 Vrms
0% - 70%
Notes:
1. With a pulse interval that is >60S. Requires the addition of the filter module
MDCFM-40U
(or a similar discrete circuit) as shown in the circuit/board
layout diagrams below. Contact the factory for more information.
2. All units will meet class B with the addition of the filter module
MDCFM-40U
(or a similar discrete circuit) as shown in the circuit/board layout diagrams
below. Contact the factory for more information.
3. To meet the requirements of EN 61000-4-4 (±4 kV), external components are
needed. This can be done discretely, or with the addition of the
MDCFM-40U.
Contact the factory for more information.
4. To meet the requirements of EN 61000-4-5 (±2 kV/
±4
kV ), external components
are needed. This can be done discretely, or with the addition of the
MDCFM-40U.
Contact the factory for more information.
EN 55022
EN 55022
EN 61000-4-2
EN 61000-4-3
See Note 3 EN 61000-4-4
See Note 4 EN 61000-4-5
EN 61000-4-6
EN 61000-4-29
B
A
B
B
A
B
Typical Connection
The diagram above illustrates a typical connection of the
MR2011S
series. The
MDCFM-40U
filter module is used to make the circuit compliant with input
surge and EMC standards EN 55022, EN 61000 and EN 50155. This can also be
accomplished by using external filter components as shown in the board layout
drawing below. Some notes on these components are:
1. It is recommended that an external fuse be used. The recommended fuse is
shown in the model chart on page 2.
2. An external MOV is recommended on the input to protect the unit in the event
of a surge. A recommended value is given in the table at right.
3. An external TVS is recommended on the input to protect the unit in the event
of a voltage spike. A recommended value is given in the table at right.
4. The output filtering capacitor (C
3
) is a high frequency, low resistance electrolytic
capacitor. Care must be taken in choosing this capacitor not to exceed the
capacitive load specification for the unit. Voltage derating of capacitors should
be 80% or above.
mended. A typical board layout with this module is shown in the figure
below. For pricing or full technical information on these modules please
Component
Value
contact the factory.
MOV
S14K35
7. In many applications,
L
1
56
µH
simply adding input/out-
Vin
Input
Vout
Output
put capacitors will en-
(VDC)
Capacitor
(VDC)
Capacitor
TVS
SMCJ170
hance the input surge
C
1
100
µF/200V
5.0
470
µF
protection & and reduce
C
3
12
1.0
µF/50V
220
µF
output ripple sufficiently. 110
100
µF
15
220
µF
L
2
4.7
µH
In this case, capacitors
24
100
µF
C
Y1,
C
Y2
1,000 pF/2 kV
C
1
and C
3
would be
connected as shown, without the other filter components. Recom-
6. Input noise and surge suppression modules are available for a
mended capacitor values are given in the table above.
number of
MPD
DC/DC power supplies. For use with the
MRxxS
product series, the
MDCFM-40U
DC filter module is recom-
5. Suggested component values are:
Typical Board Layout
: With External Filter/Surge Components
Typical Board Layout
: With External Filter Module
MicroPower Direct
•
292 Page Street Ste D Stoughton, MA 02072
•
TEL: (781) 344-8226
•
FAX: (781) 344-8481
•
E-Mail: sales@micropowerdirect.com
Mechanical Dimensions
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Pin Connections
Pin
1
2
3
4
5
6
Single Output
+V
IN
-V
IN
+V
OUT
Trim
-V
OUT
Remote On/Off
Pin
1
2
3
4
5
6
Dual Output
+V
IN
-V
IN
+V
OUT
Common
-V
OUT
Remote On/Off
Adapter Plate
Mechanical Dimensions:
With Optional Heatsink
All models of the
MR2011S-xxRU
series are available mounted
on an adapter plate similar to the one pictured above. The adapter
plate makes it easier to mount the unit to a chassis or to a standard
DIN rail. Please contact the factory for more information.
For the heatsink option, add suffix “H” to the
model number (i.e.
MR2011S-05RU-H)
MicroPower Direct
We Power Your Success - For Less!
292 Page Street Ste D Stoughton, MA 02072
•
Notes:
•
All dimensions are typical in inches (mm)
•
Tolerance x.xx = ±0.02 (±0.50)
FAX: (781) 344-8481
•
TEL: (781) 344-8226
•
E-Mail: sales@micropowerdirect.com
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