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SELECTION GUIDE
NMS Series
6kVDC Isolated 2W Dual Output DC/DC Converters
Order Code
NMS0505C
NMS0509C
NMS0512C
NMS0515C
Nominal Input
Voltage
V
5
5
5
5
Output
Voltage
V
±5
±9
±12
±15
Output Current
mA
±200
±111
±83
±67
Ef?ciency
%
74
76
77
78
Isolation
Capacitance
pF
1.8
1.9
2.0
2.1
MTTF 1
kHrs
747
327
169
93
FEATURES
? RoHS compliant
? UL1950 recognized
NMS1205C
NMS1209C
NMS1212C
NMS1215C
12
12
12
12
±5
±9
±12
±15
±200
±111
±83
±67
78
81
82
82
1.9
2.0
2.1
2.2
365
224
136
82
? Ef?ciency to 82%
? Power density up to 0.44W/cm 3
? Dual outputs
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
? Low pro?le package
? UL 94V-0 package material
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
? No heatsink required
? Footprint 4.75cm 2
? 6kVDC isolation
OUTPUT CHARACTERISTICS
Parameter Conditions
Rated Power 2
T A =0 °C to 70 °C
Min.
Typ.
Max.
2
Units
W
? 5V & 12V input
? 5V, 9V, 12V and 15V output
? Internal SMD construction
? Fully encapsulated with toroidal magnetics
? MTTF up to 747 kHrs
Voltage Set Point Accuracy
Line regulation
Load Regulation
Ripple and Noise
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
-7.5
1.0
10
6
6
6
10
1.2
15
15
15
15
200
%
%/%
%
mV p-p
? PCB mounting
ISOLATION CHARACTERISTICS
DESCRIPTION
The NMS series of DC/DC converters are UL1950
Parameter
Isolation test voltage
Resistance
Conditions
Flash tested for 1 second
Viso= 500VDC
Min.
6000
Typ.
10
Max.
Units
VDC
GΩ
recognized which makes them ideal for all
telecom and safety applications where approved
GENERAL CHARACTERISTICS
isolation is required. The low pro?le package
allows mounting in rack systems without risk of
Parameter
Switching frequency
Conditions
All input types
Min.
Typ.
35
Max.
Units
kHz
touching other boards. The output con?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.
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 speci?cations typical at T A =25°C, nominal input voltage and rated output current unless otherwise speci?ed.
　
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
KDC_NMS.G04 Page 1 of 3
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