NMR Series
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Isolated 1W Single Output DC-DC Converters
NMR100C
NMR101C
NMR102C
NMR106C
NMR107C
NMR118C
NMR120C
5
5
5
12
12
24
24
5
12
15
5
12
5
15
200
83
67
200
83
200
67
290
260
253
121
110
60
52
NMR100PC
5
5
200
12
14
15
30
69 28 1847
6.9 7.7 4.6 10
77 33 981
6.5 7.5 4.3 10
79 40 667
12.5 13.4 5.3 10
69 36 1485
6.9 7.7
5
10
76 58 869
6.8 10
8
15
70 61 1253
2.5 3.5
8
15
80 122 566
Short Circuit Protection Option
255 10
12
10
25 74 76.5 22 3095 61060
NMR108C
NMR119C
12
24
15
12
67
83
110
53
6.5
2.8
7.5
4
4
7
10
15
76
78
56
98
613
784
MER1S1215SC
MER1S2412SC
No electrolytic or tantalum capacitors
NMR112C
NMR113C
NMR114C
15
15
15
5
12
15
200
83
67
93
85
84
8.1
3.3
2.8
10
4
3.5
14
12
14
20
15
20
69
77
78
27
58
67
2110
1790
1560
MER1S1505SC
Contact Murata
MER1S1515SC
DESCRIPTION
INPUT CHARACTERISTICS
The NMR series of industrial temperature range
DC-DC converters are the standard building
blocks for on-board distributed power systems.
They are ideally suited for providing single rail
supplies on primarily digital boards with the added
benefit of galvanic isolation to reduce switching
noise. Surface mount technology and advanced
packaging materials produce rugged reliable
performance over an extended temperature range
from -40ºC to 85ºC. For the NMR100PC protection
is continuous and auto-resetting on removal of the
short circuit.
Parameter
FEATURES
Short circuit protection option
UL 60950 recognised
1kVDC isolation ‘Hi Pot Test’
Wide temperature performance at full
1 watt load, –40°C to 85°C
Efficiency (Typ)
Efficiency (Min)
%
mV p-p
Typ. Max. Typ. Max.
%
pF
MIL. Tel.
kHrs
Recommended
Alternative
mA
MTTF1
mA
Isolation
Capacitance
V
Ripple & Noise3
Input Current at
Rated Load
V
Order Code
Nominal Input
Voltage
Output
Voltage
Output Current
Load Regulation
SELECTION GUIDE
Industry standard pinout
5V, 12V & 24V inputs
5V, 12V & 15V outputs
Fully encapsulated with toroidal magnetics
Custom solutions available
Voltage range
Input short circuit current
Input reflected ripple
current
Conditions
Min.
Typ.
Max.
Units
Continuous operation, 5V input types
Continuous operation, 12V input types
Continuous operation, 15V input types
Continuous operation, 24V input types
Short circuit variants
Short circuit types
5V & 12V input types
15V & 24V input types
4.5
10.8
13.5
21.6
5
12
15
24
95
2
1.6
5
5.5
13.2
16.5
26.4
V
15
2
10
mA p-p
Typ.
Max.
Units
1.0
W
1.15
1.0
1.2
1.2
%/%
Typ.
Max.
Units
mA
OUTPUT CHARACTERISTICS
Parameter
Conditions
Rated Power2
Voltage Set Point Accuracy
TA=-40°C to 85°C, See derating graph
See tolerance envelope
High VIN to low VIN ; Short circuit types
High VIN to low VIN ; All other output types
Line regulation
Min.
ISOLATION CHARACTERISTICS
For full details go to
https://www.murata.com/englobal/products/power/rohs
Parameter
Conditions
Min.
Isolation voltage
Resistance
Flash tested for 1 second
Viso=1000VDC
1000
10
VDC
GΩ
1. Calculated using MIL-HDBK-217 FN2 and Telcordia SR-332 calculation model with nominal input voltage at full load.
2. See derating graph.
3. See ripple & noise characterisation method.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
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KDC_NMR.K01 Page 1 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds
Wave Solder
Input voltage VIN, NMR100C, NMR101C, NMR102C
Input voltage VIN, NMR106C, NMR107C, NMR108C
Input voltage VIN, NMR112C, NMR113C, NMR114C
Input voltage VIN, NMR118C, NMR119C, NMR120C
260°C
Wave Solder profile not to exceed the profile recommended in
IEC 61760-1 Section 6.1.3. Please refer to application notes for
further information.
7V
15V
18V
28V
GENERAL CHARACTERISTICS
Parameter
Conditions
Switching frequency
5V input types
12V input types
15V input types
24V input types
Short circuit types
Min.
Typ.
Max.
110
160
90
80
97
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
All output types
-40
-50
Case Temperature above ambient
Cooling
5V output types
All other output types
Short circuit types
Free air convection
Typ.
Max.
Units
85
130
33
28
18
°C
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KDC_NMR.K01 Page 2 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage,
applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions NMR series of DC-DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The NMR is recognised by Underwriters Laboratory for functional insulation, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or
60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part
could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must be
regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to safety
standard requirements.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials,
construction and environment. The NMR series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enamelled wire. While
parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically
polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We
therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage.
This consideration equally applies to agency recognised parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further
insulation system of physical spacing or barriers.
SAFETY APPROVAL
UL60950
The NMR series is recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation in a maximum still air ambient temperature of 100°C as measured at any point
on the case of the unit (hotspot).
FUSING
The NMR Series of converters are not internally fused so to meet the requirements of UL an anti-surge input line fuse should always be used with ratings as defined below.
Input Voltage, 5V 0.5A
Input Voltage, 12V 0.25A
Input Voltage, 24V 0.12A
All fuses should be UL recognised, 125V rated.
File number E151252 applies.
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260ºC for 10 seconds. Please refer to application
notes for further information. The pin termination finish on this product series is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The
series is backward compatible with Sn/Pb soldering systems.
For further information, please visit https://www.murata.com/en-global/products/power/rohs
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KDC_NMR.K01 Page 3 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
CHARACTERISATION TEST METHODS
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
C1
1μF X7R multilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC-DC converter
10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC-DC converter with an ESR of less
than 100mΩ at 100 kHz
C3
100nF multilayer ceramic capacitor, general purpose
R1
450Ω resistor, carbon film, ±1% tolerance
R2
50Ω BNC termination
T1
3T of the coax cable through a ferrite toroid
RLOAD
Resistive load to the maximum power rating of the DC-DC converter. Connections should be made via twisted wires
Measured values are multiplied by 10 to obtain the specified values.
C2
Differential Mode Noise Test Schematic
DC/DC Converter
OSCILLOSCOPE
C1 C2 C3
+
SUPPLY
Input
-
R1
+
T1
R2
Y INPUT
Output
-
R LOAD
APPLICATION NOTES
Minimum load
The minimum load to meet datasheet specification is 10% of the full rated load across the specified input voltage range. Lower than 10% minimum loading will result in
an increase in output voltage, which may rise to typically double the specified output voltage if the output load falls to less than 5%.
Capacitive loading and start up
Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product
series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF.
Typical Start-Up Wave Form
NMR100C
NMR101C
NMR102C
NMR106C
NMR107C
NMR108C
Start-up time
μs
2301
5570
8289
783
4770
4850
NMR112C
NMR113C
NMR114C
NMR118C
NMR119C
NMR120C
NMR100PC
Start-up time
μs
744
1908
6620
671
5335
6370
360
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KDC_NMR.K01 Page 4 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
APPLICATION NOTES (Continued)
Output Ripple Reduction
By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.
Component selection
Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended.
The voltage rating should be at least twice (except for 15V output), the rated output voltage of the DC-DC converter.
Inductor: The rated current of the inductor should not be less than that of the output of the DC-DC converter. At the rated current, the DC resistance of the inductor
should be such that the voltage drop across the inductor is 20MHz.
L
DC
Power
Source
NMR100C
NMR101C
NMR102C
NMR106C
NMR107C
NMR108C
NMR112C
NMR113C
NMR114C
NMR118C
NMR119C
NMR120C
NMR100PC
L, μH
10
47
47
10
47
47
10
47
47
10
47
47
22
Inductor
SMD
82103C
82473C
82473C
82103C
82473C
82473C
82103C
82473C
82473C
82103C
82473C
82473C
82223C
C
Load
DC
Through Hole
11R103C
11R473C
11R473C
11R103C
11R473C
11R473C
11R103C
11R473C
11R473C
11R103C
11R473C
11R473C
11R223C
Capacitor
C, μF
4.7
1
1
4.7
1
1
4.7
1
1
4.7
1
1
1
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KDC_NMR.K01 Page 5 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
TOLERANCE ENVELOPES
The voltage tolerance envelopes show typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due
to changes in output loading and set point accuracy.
NMR118
NMR113, NMR114, NMR119, NMR120
2%
0%
Output Voltage
Output Voltage
7%
4%
1%
0%
-3%
-5%
10
25
50
Output Load Current (%)
100
75
10
25
All other output types
50
Output Load Current (%)
100
75
Short cicuit types
10%
10%
0%
Output Voltage
Output Voltage
5%
2.5%
0%
-6%
-7.5%
10
25
50
Output Load Current (%)
10
100
75
25
50
Output Load Current (%)
75
100
TEMPERATURE DERATING GRAPHS
All other types.
1
Output Power (W)
Output Power (W)
Short Circuit types.
85°C
Safe Operating Area
0
-40
100
50
0
Ambient Temperature (°C)
150
85°C
1
Safe Operating Area
120°C
0
-40
100
50
0
Ambient Temperature (°C)
150
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KDC_NMR.K01 Page 6 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
EFFICIENCY VS LOAD
NMR100C
NMR101C
NMR102
NMR106C
NMR107C
NMR108C
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KDC_NMR.K01 Page 7 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
EFFICIENCY VS LOAD (Continued)
NMR118C
NMR119C
NMR120C
NMR100PC
90
80
70
Efficiency (%)
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
Load (%)
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KDC_NMR.K01 Page 8 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
EMC FILTERING AND SPECTRA
FILTERING
The following filter circuit and filter table shows the input filters typically required to meet EN 55022 Curve B, Quasi-Peak EMC limit, as shown in the following plots. The
following plots show positive and negative quasi peak and CISPR22 Average Limit B (pink line) and Quasi Peak Limit B (green line) adherence limits.
L
DC
C
DC
C
Ceramic capacitor
Inductor
Capacitor
Part Number
L, μH
SMD
Through Hole
C, μF
NMR100C
NMR101C
NMR102C
NMR106C
NMR107C
NMR108C
NMR118C
NMR119C
NMR120C
NMR100PC
10
82103C
13R103C
10
NMR100C
NMR101C
NMR102C
NMR106C
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KDC_NMR.K01 Page 9 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
EMC FILTERING AND SPECTRA (Continued)
NMR107C
NMR108C
NMR118C
NMR119C
NMR120C
NMR100PC
80
70
60
dBuV
50
40
30
20
10
0
1.00E+05
1.00E+06
1.00E+07
1.00E+08
Frequency (Hz)
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KDC_NMR.K01 Page 10 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
PIN CONNECTIONS - 7 PIN SIP
7 Pin SIP Package
19.50±0.25 [0.768±0.010]
6.00±0.25 [0.236±0.010]
10.00±0.25 [0.394±0.010]
Pin
Function
1
2
4
6
+VIN
-VIN
-VOUT
+VOUT
S
4.10±0.5 [0.161±0.020]
0.50±0.05 [0.020±0.002]
5.08 [0.200]
0.25±0.05 [0.010±0.002]
1
2
(1.13 [0.044])
4
6
2.54 [0.100]
(1.93 [0.076])
12.70 [0.500]
All dimensions in mm (inches) Controlling dimension is mm.
All pins on a 2.54 (0.100) pitch and within ±0.1 (0.004) of true position from pin 1 at seating plane ‘S’
For SIP products, from date code D2224 onwards, products have an embossed logo on the top of the case.
Prior to this date, SIP products have flat surface finish.
RECOMMENDED FOOTPRINT DETAILS
Weight: 2.1g (C) 1.9g (PC)
TUBE OUTLINE DIMENSIONS
9.3 [0.366]
2.54 [0.100]
x4 HOLES
Ø 0.045
0.039
Ø 1.15
1.00
[
]
12.43 [0.489]
2.54 [0.100]
18.0 [0.709]
Tube quantity: 35
5.0 [0.197]
All dimensions in mm (inches) Controlling dimension is mm.
Unless otherwise specified all dimensions in mm [inches] ±0.55mm [0.022].
Tube Length : 520mm [20.472] ±2.0 [0.079].
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KDC_NMR.K01 Page 11 of 12
NMR Series
Isolated 1W Single Output DC-DC Converters
DISCLAIMER
Unless otherwise stated in the datasheet, all products are designed for standard commercial and industrial applications and NOT for safety-critical and/or life-critical
applications.
Particularly for safety-critical and/or life-critical applications, i.e. applications that may directly endanger or cause the loss of life, inflict bodily harm and/or loss or severe
damage to equipment/property, and severely harm the environment, a prior explicit written approval from Murata is strictly required. Any use of Murata standard products for any safety-critical, life-critical or any related applications without any prior explicit written approval from Murata shall be deemed unauthorised use.
These applications include but are not limited to:
•
Aircraft equipment
•
Aerospace equipment
•
Undersea equipment
•
Power plant control equipment
•
Medical equipment
•
Transportation equipment ( automobiles, trains, ships, etc.)
•
Traffic signal equipment
•
Disaster prevention / crime prevention equipment
•
Data Processing equipment
Murata makes no express or implied warranty, representation, or guarantee of suitability, fitness for any particular use/purpose and/or compatibility with any application or device of the buyer, nor does Murata assume any liability whatsoever arising out of unauthorised use of any Murata product for the application of the buyer. The
suitability, fitness for any particular use/purpose and/or compatibility of Murata product with any application or device of the buyer remain to be the responsibility and
liability of the buyer.
Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards that anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause harm, and take appropriate remedial actions. Buyer will fully indemnify and hold
Murata, its affiliated companies, and its representatives harmless against any damages arising out of unauthorised use of any Murata products in any safety-critical and/
or life-critical applications.
Remark: Murata in this section refers to Murata Manufacturing Company and its affiliated companies worldwide including, but not limited to, Murata Power Solutions.
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: https://www.murata.com/en-eu/products/power/requirements
Murata Power Solutions (Milton Keynes) Ltd. makes no representation that the use of its products in the circuits described herein, or the use
of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do
not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change
without notice.
© 2023 Murata Power Solutions (Milton Keynes) Ltd.
www.murata.com
KDC_NMR.K01 Page 12 of 12
