3kVDC Isolated 1W Single & Dual Output DC/DC Converters
SELECTION GUIDE
Load Regulation
(Typ)
Load Regulation
(Max)
Input Current at
Rated Load
Output Current
Ripple & Noise
(Typ)
Ripple & Noise
(Max)
Nominal Input
Voltage
Isolation
Capacitance
Efficiency
Output
Voltage
MTTF
1
kHrs
4241
3376
2555
1838
4241
3376
2555
1838
2664
2295
1883
1462
2664
2295
1883
1462
2747
1365
941
3106
2258
1579
1065
3106
2258
1579
1065
2148
1705
1287
924
2148
1705
1287
924
1941
789
522
Order Code
V
NMV0505DAC
NMV0509DAC
NMV0512DAC
NMV0515DAC
NMV0505SAC
NMV0509SAC
NMV0512SAC
NMV0515SAC
NMV1205DAC
NMV1209DAC
NMV1212DAC
NMV1215DAC
NMV1205SAC
NMV1209SAC
NMV1212SAC
NMV1215SAC
NMV1505SAC
NMV1512SAC
NMV1515SAC
NMV0505DC
NMV0509DC
NMV0512DC
NMV0515DC
NMV0505SC
NMV0509SC
NMV0512SC
NMV0515SC
NMV1205DC
NMV1209DC
NMV1212DC
NMV1215DC
NMV1205SC
NMV1209SC
NMV1212SC
NMV1215SC
NMV1505SC
NMV1512SC
NMV1515SC
5
5
5
5
5
5
5
5
12
12
12
12
12
12
12
12
15
15
15
5
5
5
5
5
5
5
5
12
12
12
12
12
12
12
12
15
15
15
V
5
9
12
15
5
9
12
15
5
9
12
15
5
9
12
15
5
12
15
±5
±9
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
±5
±9
±12
±15
±5
±12
±15
mA
200
111
84
67
200
111
84
67
200
111
84
67
200
111
84
67
200
84
67
±100
±55
±42
±33
±100
±55
±42
±33
±100
±55
±42
±33
±100
±55
±42
±33
±100
±42
±33
mA
294
267
260
256
294
267
260
256
121
113
108
108
121
113
108
108
93
85
84
280
263
256
253
280
263
256
253
117
113
111
110
117
113
111
110
91
87
84
14.6
9.3
7.4
6.7
14.6
9.3
7.4
6.7
14.6
9.3
7.4
6.7
14.6
9.3
7.4
6.7
8.3
3.3
2.8
9.0
7.5
6.8
6.8
9.0
7.5
6.8
6.8
9.0
7.5
6.8
6.8
9.0
7.5
6.8
6.8
5.5
2.6
2.3
%
15
10
8.0
7.3
15
10
8.0
7.3
15
10
8.0
7.3
15
10
8.0
7.3
10
4.0
4.0
10
8.5
7.5
8.5
10
8.5
7.5
8.5
10
8.5
7.5
8.5
10
8.5
7.5
8.5
10
3.0
3.0
mVp-p
15
11.3
10.5
8.7
16
12
11
11
9.5
7
8
8
11
7.5
9
8.5
15.5
11.2
11
11
7.5
6.7
6
11
7
6.7
6.3
8.6
6.5
6.2
5.5
10
8
6
6.5
11
7.5
7.5
17
15
16
11
23
15
15
14
14
8.5
19
17
16
14
22
17
17
14
13
14
9
9
9
17
9.4
8
8.2
12
9
8.5
8
13
11
10
13
12
9
9
%
68
75
77
78
68
75
77
78
69
74
77
77
69
74
77
77
67
75
77
71.5
76
78
79
71.5
76
78
79
71
74
75
76
71
74
75
76
69
75
77
pF
23
30
26
27
23
30
26
27
26
35
43
42
26
35
43
42
21
45
50
21
24
26
27
21
24
26
27
27
35
42
41
27
35
42
41
39
68
84
FEATURES
RoHS compliant
Efficiency to 79%
Power density up to 0.85W/cm
3
Wide temperature performance at full
1 Watt load, –40°C to 85°C
Single or dual output
UL 94V-0 package material
No heatsink required
Footprint from 1.17cm
2
Industry standard pinout
Power sharing on dual output
3kVDC isolation (1 minute)
5V, 12V, & 15V input
5V, 9V, 12V and 15V output
Internal SMD construction
Fully encapsulated with toroidal
magnetics
No external components required
MTTF up to 4.2 million hours
No electrolytic or tantalum capacitors
PRODUCT OVERVIEW
The NMV series of industrial temperature range
DC/DC converters are the standard buliding blocks
for on-board distributed power systems. They
are ideally suited for providing local supplies on
control system boards with the added benefit
of 3kVDC galvanic isolation to reduce switch-
ing noise. Available in SIP and DIP with dual and
single output pinout. All of the rated power may
be drawn from a single pin provided the total load
does not exceed 1 watt.
INPUT CHARACTERISTICS
Parameter
Voltage range
Reflected ripple current
Conditions
Continuous operation, 5V input types
Continuous operation, 12V input types
Continuous operation, 15V input types
Min.
4.5
10.8
13.5
Typ.
5
12
15
20
Max.
5.5
13.2
16.5
40
Units
V
mA p-p
1. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
For full details go to
www.murata-ps.com/rohs
All specifications typical at T
A
=25°C, nominal input voltage and rated output current unless otherwise specified.
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KDC_NMV.G03
Page 1 of 6
Package
Style
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
NMV 5V, 12V & 15V Series
3kVDC Isolated 1W Single & Dual Output DC/DC Converters
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage V
IN
, NMV05 types
Input voltage V
IN,
NMV12 types
Input voltage V
IN,
NMV15 types
300°C
560mW
7V
15V
18V
OUTPUT CHARACTERISTICS
Parameter
Rated Power
Voltage Set Point Accuracy
Line regulation
2
Conditions
T
A
=-40
°C
to 120
°C
See tolerance envelope
High V
IN
to low V
IN
Min.
Typ.
Max.
1
Units
W
%/%
1.0
1.2
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
Conditions
Flash tested for 1 minute
Viso= 1000VDC
Min.
3000
10
Typ.
Max.
Units
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Switching frequency
Conditions
5V input types
12V input types
15V input types
Min.
Typ.
120
150
90
Max.
135
170
110
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Specification
Storage
Case Temperature above ambient
Cooling
Conditions
All output types
5V output types
All other output types
Free air convection
Min.
-40
-50
Typ.
Max.
85
125
28
25
Units
°C
TEMPERATURE DERATING GRAPH
1.5
TOLERANCE ENVELOPE
+10%
+5%
V
NOM
Typical
Lo
ad Line
+2.5%
-2.5%
-7.5%
Output Power (W)
0.5
0
-40
Safe Operating Area
120°C
100
50
0
Ambient Temperature (°C)
150
Output Voltage
1.0
85°C
10
75
50
25
Output Load Current (%)
100
The voltage tolerance envelope shows typical load regulation characteristics for this
product series. The tolerance envelope is the maximum output voltage variation due
to changes in output loading.
www.murata-ps.com/support
KDC_NMV.G03
Page 2 of 6
NMV 5V, 12V & 15V Series
3kVDC Isolated 1W Single & Dual 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 NMV series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 3kVDC for 1 minute.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
For a part holding no specific agency approvals, such as the NMV series, 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 NMV series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled 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 recognized 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.
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of
300°C for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped
over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in
this series are backward compatible with Sn/Pb soldering systems.
For further information, please visit www.murata-ps.com/rohs
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
Start-up time
μs
1966
5360
11180
16270
1290
4140
Start-up time
μs
8650
11171
803
3510
8361
NMV0505xC
NMV0509xC
NMV0512xC
NMV0515xC
NMV1205xC
NMV1209xC
NMV1212xC
NMV1215xC
NMV1505xC
NMV1512xC
NMV1515xC
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KDC_NMV.G03
Page 3 of 6
NMV 5V, 12V & 15V Series
3kVDC Isolated 1W Single & Dual Output DC/DC Converters
APPLICATION NOTES (continued)
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
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
C2
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.
C1
Differential Mode Noise Test Schematic
DC/DC Converter
OSCILLOSCOPE
C1 C2 C3
+
SUPPLY
Input
R1
T1
R2
Y INPUT
+
Output
-
-
R LOAD
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 <2% of the rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency) should be
>20MHz.
L
Power
Source
DC
C
Load
DC
NMV0505xC
NMV0509xC
NMV0512xC
NMV0515xC
NMV1205xC
NMV1209xC
NMV1212xC
NMV1215xC
NMV1505xC
NMV1512xC
NMV1515xC
L, μH
22
100
150
220
22
100
150
220
22
150
220
Inductor
SMD
82223C
82104C
82154C
82224C
82223C
82104C
82154C
82224C
82223C
82154C
82224C
Through Hole
11R223C
11R104C
11R154C
11R224C
11R223C
11R104C
11R154C
11R224C
11R223C
11R154C
11R224C
Capacitor
C, μF
1
0.47
0.33
0.22
2.2
1
0.33
0.22
1
0.33
0.22
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KDC_NMV.G03
Page 4 of 6
NMV 5V, 12V & 15V Series
3kVDC Isolated 1W Single & Dual Output DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
DIP package
0.77 (19.50)
SIP package
0.77 (19.50)
0.236
(6.00)
0.386
(9.80)
NMV0505DC
XYYWWi
0.268
(6.80)
0.181 (4.60)
0.142 (3.60)
0.394
(10.00)
NMV0515SC
XYYWWi
0.0216 (0.55)
0.0177 (0.45)
1 2
0.022 (0.55)
0.018 (0.45)
0.1 (2.54)
0.043
(1.09)
0.3
(7.62)
0.084
(2.13)
* Pin not fitted on single output variants.
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.
1. Introduction
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