NMS Series
6kVDC Isolated 2W Dual Output DC/DC Converters
KDC_NMS.G03 Page 1 of 3
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SELECTION GUIDE
Order Code
Nominal Input
Voltage
Output
Voltage Output Current Effi ciency Isolation
Capacitance MTTF1
V V mA % pF kHrs
NMS0505C 5 ±5 ±200 74 1.8 747
NMS0509C 5 ±9 ±111 76 1.9 327
NMS0512C 5 ±12 ±83 77 2.0 169
NMS0515C 5 ±15 ±67 78 2.1 93
NMS1205C 12 ±5 ±200 78 1.9 365
NMS1209C 12 ±9 ±111 81 2.0 224
NMS1212C 12 ±12 ±83 82 2.1 136
NMS1215C 12 ±15 ±67 82 2.2 82
When operated with 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 Conditions Min. Typ. Max. Units
Voltage range Continuous operation, 5V input types 4.5 5 5.5 V
Continuous operation, 12V input types 10.8 12 13.2
OUTPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Rated Power2TA=0°C to 70°C 2W
Voltage Set Point Accuracy See tolerance envelope -7.5 10 %
Line regulation High VIN to low VIN 1.0 1.2 %/%
Load Regulation
10% load to rated load, 5V output types 10 15
%
10% load to rated load, 9V output types 6 15
10% load to rated load, 12V output types 6 15
10% load to rated load, 15V output types 6 15
Ripple and Noise BW=DC to 20MHz, all output types 200 mV p-p
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation test voltage Flash tested for 1 second 6000 VDC
Resistance Viso= 500VDC 10 GΩ
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Switching frequency All input types 35 kHz
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection31 second
Lead temperature 1.5mm from case for 10 seconds 300°C
Internal power dissipation 900mW
Input voltage VIN, NMS05 types 7V
Input voltage VIN, NMS12 types 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 specifi cations typical at TA=25°C, nominal input voltage and rated output current unless otherwise specifi ed.
FEATURES
RoHS compliant
UL1950 recognized
Effi ciency to 82%
Power density up to 0.44W/cm3
Dual outputs
Low profi le package
UL 94V-0 package material
No heatsink required
Footprint 4.75cm2
6kVDC isolation
5V & 12V input
5V, 9V, 12V and 15V output
Internal SMD construction
Fully encapsulated with toroidal magnetics
MTTF up to 747 kHrs
PCB mounting
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 profi le package
allows mounting in rack systems without risk of
touching other boards. The output confi guration
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.
NMS Series
6kVDC Isolated 2W Dual Output DC/DC Converters
KDC_NMS.G03 Page 2 of 3
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TEMPERATURE DERATING GRAPH
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Specification All output types 0 70
°C
Storage -50 130
Case Temperature above ambient All output types 32
Cooling Free air convection
TOLERANCE ENVELOPE
+10%
Output Load Current (%)
Output Voltage
+5%
-7.5%
-2.5%
+2.5%
Typical Load Line
VNOM
100
75
50
25
10
806040200
0
1.0
2.0
3.0
Safe Operating Area
70°C
Ambient Temperature (°C)
Output Power (W)
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.
SAFETY APPROVAL
The NMS series has been recognised
by Underwriters Laboratory (UL) to UL 60950
for supplementary insulation up to 300Vrms
and reinforced insulation up to 150Vrms
working voltage.
File number E179522 applies.
NMS Series
6kVDC Isolated 2W Dual Output DC/DC Converters
KDC_NMS.G03 Page 3 of 3
www.murata-ps.com/support
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
notice. © 2012 Murata Power Solutions, Inc.
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/
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS PIN CONNECTIONS
Pin Function
1+VIN
2-VIN
8-VOUT
9NC
10 OV
11 NC
12 +VOUT
13 +VOUT
14 NC
15 OV
16 NC
17 -VOUT
23 NC
24 NC
RECOMMENDED FOOTPRINT DETAILS TUBE OUTLINE DIMENSIONS
1.28 (32.60) MAX
0.58
(14.72)
0.370±0.012
(9.40±0.30)
0.1 (2.54)
0.085 (2.16)
0.600
(15.24) 0.6673
(16.95) MAX
0.012 (0.30)
0.008 (0.20)
0.0236
(0.60) MAX
0.154
(3.90)
0.022 (0.55)
0.018 (0.45)
1
2
24
23
8
9
10
11
12
17
16
15
14
13
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
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
Unless otherwise stated all dimensions in inches ±0.01 (mm) ±0.5mm.
