Murata Power Solutions

NTA Series
www.murata-ps.com
Isolated 1W Dual Output SM DC/DC Converters
SELECTION GUIDE
1
Order Code
FEATURES
„
RoHS compliant
„
Efficiency up to 78%
„
Wide temperature performance at full
1 Watt load, –40°C to 85°C
„
UL 94V-0 Package material
„
Footprint over pins 1.64cm2
„
Lead frame technology
Nominal
Input
Voltage
V
NTA0303MC
NTA0305MC
NTA0309MC
NTA0312MC
NTA0315MC
NTA0503MC
NTA0505MC
NTA0505MEC
NTA0509MC
NTA0512MC
NTA0515MC
NTA1205MC
NTA1209MC
NTA1212MC
NTA1215MC
V
mA
Input
Current at
Rated Load
mA
±3.3
±5
±9
±12
±15
±3.3
±5
±5
±9
±12
±15
±5
±9
±12
±15
±152
±100
±55
±42
±33
±152
±100
±100
±55
±42
±33
±100
±55
±42
±33
402
388
405
390
392
259
290
251
267
260
256
121
113
111
110
Output
Voltage
3.3
3.3
3.3
3.3
3.3
5
5
5
5
5
5
12
12
12
12
Output
Current
Efficiency
Isolation
MTTF2
Capacitance
%
pF
kHrs
75
78
75
77
77
77
69
80
75
77
78
69
74
75
76
29
30
34
40
42
31
33
42
38
44
43
50
72
89
100
1005
399
827
375
206
964
1697
367
682
343
188
559
375
243
154
INPUT CHARACTERISTICS
„
3.3V, 5V & 12V Input
Parameter
Conditions
Min.
Typ.
Max.
„
Internal SMD construction
Voltage range
Continuous operation, 3V input types
Continuous operation, 5V input types
Continuous operation, 12V input types
2.97
4.5
10.8
„
Toroidal magnetics
Reflected ripple current
3.3
5
12
41
3.63
5.5
13.2
50
mA p-p
Typ.
Max.
Units
„
3.3V, 5V, 9V, 12V & 15V Output
„
1kVDC Isolation
„
MTTF up to 2.1 Million hours
„
Power density 1.36W/cm
3
„
No heatsink required
Parameter
Conditions
Min.
Isolation voltage
Resistance
Flash tested for 1 second
Viso= 1000VDC
1000
10
GENERAL CHARACTERISTICS
„
Multi-layer ceramic capacitors
Parameter
Conditions
Switching frequency
0312MC, 0315MC
0303MC, 0305MC, 0503MC, 0505MEC
All other variants
The NTA series of miniature surface mounted
DC/DC Converters employ leadframe
technology and transfer moulding techniques
to bring all of the benefits of IC style
packaging to hybrid circuitry. Co-planarity of the
lead positions is based upon IEC 191-6:1990. The
devices are suitable for all applications where
high volume production is envisaged.
V
ISOLATION CHARACTERISTICS
„
Custom solutions available
PRODUCT OVERVIEW
Units
Min.
VDC
GΩ
Typ.
100
110
115
Max.
Units
kHz
ABSOLUTE MAXIMUM RATINGS
Internal power dissipation
Input voltage VIN, NTA03 types
Input voltage VIN, NTA05 types
Input voltage VIN, NTA12 types
700mW
5.5V
7V
15V
1. If components are required in tape and reel format suffix order code code with -R, e.g. NTA0505MC-R.
2. Calculated using MIL-HDBK-217F with nominal input voltage at full load.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
For full details go to
www.murata-ps.com/rohs
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KDC_NTA.I06 Page 1 of 6
NTA Series
Isolated 1W Dual Output SM DC/DC Converters
OUTPUT CHARACTERISTICS
Parameter
Conditions
Rated Power
Voltage Set Point Accuracy
Line regulation
TA=-40°C to 85°C
See tolerance envelope
High VIN to low VIN
10% load to rated load, 0303MC & 0503MC
10% load to rated load, 5V output types
10% load to rated load, 0309MC
10% load to rated load, 0509MC & 1209MC
10% load to rated load, 0312MC & 0315MC
10% load to rated load, 0512MC & 1212MC
10% load to rated load, 0515MC & 1215MC
BW=DC to 20MHz, 3.3V output types, NTA0305MC & NTA0505MEC
BW=DC to 20MHz, all other 5V output types
BW=DC to 20MHz, 9V output types
BW=DC to 20MHz, 12V output types
BW=DC to 20MHz, 15V output types
Load Regulation1
Ripple and Noise
Min.
Typ.
Max.
Units
1.0
W
1.0
10
10
9.0
6.5
11
6.0
6.0
40
50
35
50
65
1.2
15
12
10
8.0
14
8.5
7.0
80
100
80
110
110
%/%
Typ.
Max.
%
mV p-p
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
All output types
-40
-55
Case temperature rise above
ambient
Cooling
0305MC, 0505MEC, 0312MC, 0315MC
0303MC, 0309MC, 0503MC
0505MC, 1205MC
All other variants
Free air convection
Units
85
125
19
25
46
35
°C
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 NTA 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?”
For a part holding no specific agency approvals, such as the NTA 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 NTA 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.
TEMPERATURE DERATING GRAPH
Output Power (W)
1.5
1.0
0.5
0
-40
85°C
Safe Operating Area
100
50
0
Ambient Temperature (°C)
150
1. 12V input types have typically 3% less load regulation change.
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KDC_NTA.I06 Page 2 of 6
NTA Series
Isolated 1W Dual Output SM DC/DC Converters
RoHS COMPLIANCE, MSL AND PSL INFORMATION
This series is compatible with RoHS soldering systems and is also backward compatible with Sn/Pb soldering systems.
The NTA series has a process, moisture, and reflow sensitivity classification of MSL1 PSL R7F as defined in J-STD-020
and J-STD-075. This translates to: MSL1 = unlimited floor life, PSL R7F = Peak reflow temperature 245°C with a
limitation on the time above liquidus (217°C) which for this series is 60sec max. The pin termination finish on this product
series is Gold with a plating thickness of 0.05 microns minimum.
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
NTA0303MC
NTA0305MC
NTA0309MC
NTA0312MC
NTA0315MC
NTA0503MC
NTA0505MC
NTA0505MEC
Start-up time
μs
1630
1359
3435
6590
25340
1599
2185
1395
NTA0509MC
NTA0512MC
NTA0515MC
NTA1205MC
NTA1209MC
NTA1212MC
NTA1215MC
Start-up time
μs
6850
11560
15640
1154
4050
7995
11200
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
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.
Differential Mode Noise Test Schematic
DC/DC Converter
OSCILLOSCOPE
C1 C2 C3
+
SUPPLY
Input
-
+
R1
T1
R2
Y INPUT
Output
-
R LOAD
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KDC_NTA.I06 Page 3 of 6
NTA Series
Isolated 1W Dual Output SM 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 <2% of the rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency) should be
>20MHz.
+VOUT
DC
Power
Source
DC
L
C
Load
C
Load
OV
-VOUT
L
NTA0303MC
NTA0305MC
NTA0309MC
NTA0312MC
NTA0315MC
NTA0503MC
NTA0505MC
NTA0505MEC
NTA0509MC
NTA0512MC
NTA0515MC
NTA1205MC
NTA1209MC
NTA1212MC
NTA1215MC
L, μH
10
22
22
47
220
10
10
10
22
47
220
10
22
47
220
Inductor
SMD
82103C
82223C
82223C
82473C
82474C
82103C
82103C
82103C
82223C
82473C
82474C
82103C
82223C
82473C
82474C
Through Hole
11R103C
11R223C
11R223C
11R473C
11R474C
11R103C
11R103C
11R103C
11R223C
11R473C
11R474C
11R103C
11R223C
11R473C
11R474C
Capacitor
C, μF
4.7
2.2
2.2
1
0.22
4.7
4.7
4.7
2.2
1
0.22
4.7
2.2
1
0.22
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KDC_NTA.I06 Page 4 of 6
NTA Series
Isolated 1W Dual Output SM DC/DC Converters
TOLERANCE ENVELOPES
All other types.
Tolerance Envelope - 3.3V output types.
+10%
+9%
oad Lin
Output Voltage
+1%
VNOM
e
+5%
VNOM
+1%
Output Voltage
Typical
L
-7%
-7%
-15%
oad Line
+2.5%
-2.5%
-7.5%
10
100
75
50
25
Output Load Current (%)
10
Typical
L
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.
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
PIN CONNECTIONS
15.24 [0.600]
Pin
10.16 [0.400]
DETAIL A
10
18
[ ]
11.20 0.441
10.40 0.409
NTA0505MC
P
K1533
x10 PINS
1.50 [0.059]
1.20 [0.047]
9
1
2.54 [0.100]
0.2 [0.008]
S
0.2 [0.008]
x10 PINS
0.75 0.030
0.45 0.018
[ ]
±5.0°
S
[ ]
(1.875 [0.074] MAX)
2.10 [0.083]
2.79 [0.110] MAX
6.60 0.260
(5.95) (0.234)
0.50 [0.020]
REFERENCE
PLANE
7.70 [0.303]
[ ]
(6.35) (0.250)
5.85 0.230
S
x10 PINS
0.1 [0.004] S
[ ]
0.25 0.010
0.10 0.004
[ ]
0.30 0.012
0.20 0.008
Function
1
-VIN
3
+VIN
5
NA
7
OV
9
-VOUT
10
NA
12
+VOUT
14
NA
16
NA
18
NA
NA - Not available for electrical connection.
SEATING PLANE
DETAIL A
All dimensions in mm ±0.25mm (inches ±0.01). All pins on a 2.54 (0.1) pitch.
Weight: 1.53g
TUBE OUTLINE DIMENSIONS
RECOMMENDED FOOTPRINT DETAILS
0.60±0.15 (0.024±0.006)
10.16 [0.400]
x10 PLACES
2.00 [0.079]
2.10 (0.083)
9.70 [0.382]
x10 PLACES
1.00 [0.039] MIN
9.40 (0.370)
14.35 (0.565)
6.70 (0.264)
2.54 [0.100]
Unless otherwise stated all dimensions in mm±0.5 (inches ±0.02).
Tube length : 475±2.0 (18.70±0.07).
Tube Quantity : 25
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KDC_NTA.I06 Page 5 of 6
NTA Series
Isolated 1W Dual Output SM DC/DC Converters
TAPE & REEL SPECIFICATIONS
REEL OUTLINE DIMENSIONS
TAPE OUTLINE DIMENSIONS
330
(12.99) MAX
15.75
(0.62)
0.60 (0.02) MAX
100
Ø (3.94) MIN
+0.10 (+0.004)
-0.00 (-0.00)
DIRECTION OF UNREELING
13.00±0.25
Ø (0.51±0.009)
2.00
(0.08)
30.40 (1.20 ) MAX
+2.00
24.40 (0.96) (0.08) (AT HUB SECTION)
-0.00
(0.00)
Ø1.50 (0.06)
16.00 (0.63)
11.60
(0.46)
4.00
(0.16)
6.60
(0.26)
1.75(0.07)
11.50
(0.45)
24.00±0.30
(0.94±0.04)
REEL PACKAGING DETAILS
XYYWW
NTA0505MC
XYYWW
NTA0505MC
XYYWW
NTA0505MC
Product Orientation
Pin 1, located nearest to
carrier drive sprocket.
TRAILER SECTION
160 (6.30) MIN
GOODS ENCLOSURE
SECTION
CARRIER TAPE START
100 (3.94) MIN
LEADER SECTION
400 (15.75) MIN
Reel Quantity : 500
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
notice.
© 2015 Murata Power Solutions, Inc.
www.murata-ps.com/support
KDC_NTA.I06 Page 6 of 6