additional external load capacitance the rise time of the input voltage will determine the maximum external
capacitance value for guaranteed start up. The slower the rise time of the input voltage the greater the maximum value of the
additional external capacitance for reliable start up.
INPUT CHARACTERISTICS
Parameter
Voltage range
Conditions
Continuous operation, 5V input types
Continuous operation, 12V input types
Min.
4.5
10.8
Typ.
5
12
Max.
5.5
13.2
Units
V
OUTPUT CHARACTERISTICS
Parameter
Rated Power
Voltage Set Point Accuracy
Line regulation
2
Conditions
T
A
=0
°C
to 70
°C
See tolerance envelope
High V
IN
to low V
IN
10% load to rated load, 5V output types
10% load to rated load, 9V output types
10% load to rated load, 12V output types
10% load to rated load, 15V output types
BW=DC to 20MHz, all output types
Min.
-7.5
Typ.
Max.
2
10
1.2
15
15
15
15
200
Units
W
%
%/%
Load Regulation
1.0
10
6
6
6
%
Ripple and Noise
mV p-p
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
DESCRIPTION
The NMS series of DC/DC converters are UL1950
recognized which makes them ideal for all
telecom and safety applications where approved
isolation is required. The low profile package
allows mounting in rack systems without risk of
touching other boards. The output configuration
allows all of the rated power to be drawn from a
single pin provided the total load does not exceed
2 watts. The devices feature low noise and low
isolation capacitance suiltable for applications
in high noise environments, e.g. heavy electrical
machine interface.
Conditions
Flash tested for 1 second
Viso= 500VDC
Min.
6000
Typ.
10
Max.
Units
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Conditions
All input types
Min.
Typ.
35
Max.
Units
kHz
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection
3
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage V
IN
, NMS05 types
Input voltage V
IN,
NMS12 types
1 second
300°C
900mW
7V
15V
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2. See derating graph.
3. Supply voltage must be disconnected at the end of the short circuit duration.
All specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
KDC_NMS.G04
Page 1 of 3
NMS Series
6kVDC Isolated 2W Dual Output DC/DC Converters
TEMPERATURE CHARACTERISTICS
Parameter
Specification
Storage
Case Temperature above ambient
Cooling
Conditions
All output types
All output types
Free air convection
Min.
0
-50
Typ.
Max.
70
130
32
Units
°C
TEMPERATURE DERATING GRAPH
3.0
TOLERANCE ENVELOPE
+10%
70°C
+5%
V
NOM
SAFETY APPROVAL
The NMS series has been recognised
Output Power (W)
Typical
L
2.0
1.0
0
Safe Operating Area
oad Line
+2.5%
-2.5%
-7.5%
by Underwriters Laboratory (UL) to UL 60950
for supplementary insulation up to 300Vrms
and reinforced insulation up to 150Vrms
working voltage.
File number E151252 applies.
Output Voltage
0
20
40
60
Ambient Temperature (°C)
80
10
75
50
25
Output Load Current (%)
100
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 NMS series of dc/dc converters are all 100% production tested at their stated isolation voltage. This is 6kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The NMS series has been recognized by Underwiters Laboratory to a working voltage of 300Vrms for Supplementary Insulation system and 150Vrms for Reinforced
Insulation systems.
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. 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.
www.murata-ps.com/support
KDC_NMS.G04
Page 2 of 3
NMS Series
6kVDC Isolated 2W Dual Output DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
1.28 (32.60) MAX
1
2
24
23
PIN CONNECTIONS
Pin
1
2
8
9
10
11
12
13
14
15
16
17
23
24
Function
+V
IN
-V
IN
-V
OUT
NC
OV
NC
+V
OUT
+V
OUT
NC
OV
NC
-V
OUT
NC
NC
0.58
(14.72)
8
9
17
16
15
14
13
0.370±0.012
(9.40±0.30)
0.0236
(0.60) MAX
10
11
12
0.085 (2.16)
0.022 (0.55)
0.018 (0.45)
0.600
(15.24)
0.1 (2.54)
0.154
(3.90)
0.012 (0.30)
0.008 (0.20)
0.6673
(16.95) MAX
All dimensions in inches ±0.01 (mm ±0.25mm). All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position.
Weight: 7.5g
RECOMMENDED FOOTPRINT DETAILS
TUBE OUTLINE DIMENSIONS
Unless otherwise stated all dimensions in inches ±0.01 (mm) ±0.5mm.
Unless otherwise stated all dimensions in inches ±0.01 (mm) ±0.5mm.
Tube length : 20.47±0.079 (520mm ±2mm).
Tube Quantity : 15
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300ºC for 10 seconds. The pin termination finish
on this product series is Matte Tin over Nickel Preplate. The series is backward compatible with Sn/Pb soldering systems.
For further information, please visit www.murata-ps.com/rohs
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following
operating requirements
and the
Life and Safety Critical Application Sales Policy:
Refer to:
http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. 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
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