MEA1 Series
www.murata.com
1kVDC Isolated 1W Dual Output DC-DC Converters
233
228
228
225
98
95
93
94
76
76
75
49
47
47
47
26
93
47
4.8
3.7
4
3.8
3.5
2.5
2.6
2.2
2.1
2
2
2.8
1.8
1.6
1.5
2.6
2.7
1.5
5.4
4.5
5
4.5
4
3
3.5
3
2.5
2.5
2.5
3.5
2.5
2.5
2.5
4
3.5
2.3
12
8
6
6
9
7
6
5
7
5
5
9
7
4
3
14
6
6
25
20
20
20
20
20
20
20
20
20
20
20
20
20
20
25
20
20
82
84
84
84
81
83
85
84
82
83
85
81
84
84
85
77
85
85
85 53 3663 79541
86.5 51 3291 80891
87 45 2860 80521
87 46 2374 77687
85 44 3352 75377
86.5 61 3083 79125
89 88 2701 78770
88 78 2267 76058
87 65 4691 125575
87.5 75 4028 126626
89.5 104 4103 74686
84.5 47 4581 110817
87.5 80 3942 102064
87 85 3247 97979
88.5 106 3658 108331
80 44 4332 121907
89 89 3267 69830
88 100 2435 90783
MEA1D0505DC 5
MEA1D0515DC 5
MEA1D2405DC 24
MEA1D2412DC 24
±5
±15
±5
±12
±100
±33
±100
±42
232
224
49
47
5
4.1
2.8
1.6
6.2
5.3
4
2.5
12
6
10
6
25
20
20
20
82
84
81
84
85
87.5
84.5
87
MEA1D0509DC
MEA1D0512DC
MEA1D1205DC
MEA1D1209DC
MEA1D1215DC
MEA1D1505SC
MEA1D1505DC
MEA1D1509DC
MEA1D1512DC
MEA1D1515DC
MEA1D2409DC
MEA1D4809SC
MEA1D4812SC
MEA1D4815SC
±9
±12
±5
±9
±15
±5
±5
±9
±12
±15
±9
±9
±12
±15
±56
±42
±100
±56
±33
±100
±100
±56
±42
±33
±56
±56
±42
±33
227
226
97
95
94
78
78
76
76
75
48
25
25
25
3.9
4.2
3.6
2.6
2.3
3
3.1
2.2
2
2
2
1.6
1.6
1.3
5
5.3
4.5
3.5
3
3.5
4
3
2.7
2.7
3.8
3
3
2.5
9
7
9
7
6
8
9
6
6
6
8
8
7
6
20
20
20
20
20
20
20
20
20
20
20
20
20
20
84
84
81
83
84
80
80
82
83
85
84
79
78
80
86.7 49 4087 130861 MEA1D0509SC
87 47 3394 121694 NMA0512DC
84.5 43 3465 112889 NMA1205DC
86.5 64 3623 69665 NKA1209SC
88 76 2339 95016 NMA1215DC
84 40 4063 113571 Contact Murata
84 42 2929 59216 Contact Murata
87 50 2551 96783 MEA1D1509SC
87.5 77 2665 102007 Contact Murata
89.5 106 2192 87932 NMV1515SC
87 77 3686 110546 MEA1D2409SC
82 72 6067 147429 MEV1D4809SC
83 91 3675 139747 Contact Murata
83.5 109 3492 73859 Contact Murata
Load Regulation (Typ)
%
%
pF
MIL. Tel.
kHrs
Recommended
Alternative
±100
±56
±42
±33
±100
±56
±42
±33
±56
±42
±33
±100
±56
±42
±33
±100
±42
±33
MTTF2
±5
±9
±12
±15
±5
±9
±12
±15
±9
±12
±15
±5
±9
±12
±15
±5
±12
±15
mVp-p
Isolation Capacitance
5
5
5
5
12
12
12
12
15
15
15
24
24
24
24
48
12
24
%
Efficiency (Typ.)
mA
Efficiency (Min.)
Input Current at Rated
Load
mA
Ripple & Noise (Max)1
Output Current
V
Ripple & Noise (Typ)1
Output Voltage
V
Order Code
Load Regulation (Max)
Nominal Input Voltage
SELECTION GUIDE
FEATURES
UL 60950 recognised
Typical efficiency to 89.5%
1kVDC isolation ‘Hi Pot Test’
Wide temperature performance at full
1 Watt load, –40°C to 85°C
Industry standard pinout
Power sharing on output
5V, 12V, 15V, 24V & 48V inputs
5V, 9V, 12V & 15V outputs
No external components required
No electrolytic or tantalum capacitors
Pin compatible with NKA & NMA series
MEA1D0505SC
MEA1D0509SC
MEA1D0512SC
MEA1D0515SC
MEA1D1205SC
MEA1D1209SC
MEA1D1212SC
MEA1D1215SC
MEA1D1509SC
MEA1D1512SC
MEA1D1515SC
MEA1D2405SC
MEA1D2409SC
MEA1D2412SC
MEA1D2415SC
MEA1D4805SC
MEA1D1212DC
MEA1D2415DC
PRODUCT OVERVIEW
The MEA series is the new high performance
version of our 1W NMA series. The MEA series
is more efficient and offers improved regulation
performance ≤5% for applications where a wide
output voltage variation cannot be tolerated. They
are ideally suited for providing dual rail supplies
with the added benefit of galvanic isolation to
reduce switching noise. All of the rated power
may be drawn from a single output providing the
total load does not exceed 1 Watt.
For full details go to
https://www.murata.com/englobal/products/power/rohs
5
5
12
12
12
15
15
15
15
15
24
48
48
48
52
46
47
83
2978
2641
3427
2855
88417
105112
95206
62894
NMA0505DC
NMA0515DC
Contact Murata
Contact Murata
1. See Ripple & Noise characterisation method.
2. Calculated using MIL-HDBK-217 FN2 and Telcordia SR-332 calculation model with nominal input voltage at full load.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
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KDC_MEA1.J01 Page 1 of 10
MEA1 Series
1kVDC Isolated 1W Dual Output DC-DC Converters
INPUT CHARACTERISTICS
Parameter
Voltage range
Reflected ripple current
Conditions
Min.
Typ.
Max.
Continuous operation, 5V input types
Continuous operation, 12V input types
Continuous operation, 15V input types
Continuous operation, 24V input types
Continuous operation, 48V input types
5V input types
12V input types
15V input types
24V input types
48V input types
4.5
10.8
13.5
21.6
43.2
5
12
15
24
48
4
4
3
3
22
5.5
13.2
16.5
26.4
52.8
12
12
10
10
35
Units
Conditions
TA=-40°C to 85°C
Min.
Typ.
Max.
Units
1
W
1.05
1.1
%/%
Typ.
Max.
Units
V
mA p-p
OUTPUT CHARACTERISTICS
Parameter
Rated Power
Voltage Set Point Accuracy
Line regulation
See tolerance envelope
High VIN to low VIN
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min.
Isolation test voltage
Resistance
Flash tested for 1 second
Viso= 1000VDC
1000
10
Conditions
Min.
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
MEA1D05xxxC, MEA1D1212xC, MEA1D1515xC
Switching frequency
Typ.
Max.
Units
65
MEA1D1205xC, MEA1D1209xC, MEA1D1215xC, MEA1D1505xC,
MEA1D1509xC, MEA1D1512xC, MEA1D24xxxC
MEA1D48xxxC
kHz
85
60
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
Case Temperature above ambient
Cooling
All output types, added see safety notes to temp characteristics
-40
-50
Typ.
Max.
Units
85
125
20
°C
Free air convection
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1mm from case for 10 seconds
260°C
Wave Solder
Wave Solder profile not to exceed the profile recommended in IEC 61760-1 Section 6.1.3.
Please refer to application notes for further information.
Input voltage VIN, 5Vin types
Input voltage VIN, 12Vin types
Input voltage VIN, 15Vin types
Input voltage VIN, 24Vin types
Input voltage VIN, 48Vin types
7V
15V
18V
28V
54V
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KDC_MEA1.J01 Page 2 of 10
MEA1 Series
1kVDC Isolated 1W 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 MEA1 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?”
The MEA1 has been recognised by Underwriters Laboratory for functional insulation, 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 MEA1 series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enamelled 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 recognised 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.
SAFETY APPROVAL
The MEA1 series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation in a maximum ambient temperature of 85°C and/or case temperature
limit of 130°C (case temperature measured on the face opposite the pins). File number E151252 applies.
The MEA1 Series of converters are not internally fused so to meet the requirements of UL 60950 an anti-surge input line fuse should always be used with ratings as defined below.
MEA1D05xxxC: 1A
MEA1D12xxxC: 0.375A
MEA1D15xxxC: 0.375A
MEA1D24xxxC: 0.2A
MEA1D48xxSC: 0.1A
All fuses should be UL approved and rated to at least the maximum allowable DC input voltage.
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of
260°C for 10 seconds. Please refer to application notes for further information. 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
PART NUMBER STRUCTURE
MEA 1 D XX XX S C
Series name
RoHS compliant
Power rating
Package type
S - Single
D - Dual
S - SIP
D - DIP
M - Surface mount
Z - ZIP
Input voltage
Output voltage
Output type
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KDC_MEA1.J01 Page 3 of 10
MEA1 Series
1kVDC Isolated 1W Dual Output DC-DC Converters
CHARACTERISATION TEST METHODS
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
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.
C2
Differential Mode Noise Test Schematic
DC/DC Converter
OSCILLOSCOPE
C1 C2 C3
+
SUPPLY
Input
-
+
R1
T1
R2
Y INPUT
Output
-
R LOAD
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.
MEA1D0505xC
MEA1D0509xC
MEA1D0512xC
MEA1D0515xC
MEA1D1205xC
MEA1D1209xC
MEA1D1212xC
MEA1D1215xC
MEA1D1505xC
MEA1D1509xC
Start-up time
μs
939
2872
5325
8895
1150
3716
6912
10810
883
3160
MEA1D1512xC
MEA1D1515xC
MEA1D2405xC
MEA1D2409xC
MEA1D2412xC
MEA1D2415xC
MEA1D4805xC
MEA1D4809xC
MEA1D4812xC
MEA1D4815xC
Start-up time
μs
5630
8585
472
1473
2643
4348
586
1705
2995
4722
Typical Start-Up Wave Form
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KDC_MEA1.J01 Page 4 of 10
MEA1 Series
1kVDC Isolated 1W Dual Output 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 20MHz.
+VOUT
DC
Power
Source
DC
C
Load
C
Load
OV
-VOUT
L
MEA1D0505xC
MEA1D0509xC
MEA1D0512xC
MEA1D0515xC
MEA1D1205xC
MEA1D1209xC
MEA1D1212xC
MEA1D1215xC
MEA1D1505xC
MEA1D1509xC
MEA1D1512xC
MEA1D1515xC
MEA1D2405xC
MEA1D2409xC
MEA1D2412xC
MEA1D2415xC
MEA1D4805xC
MEA1D4809xC
MEA1D4812xC
MEA1D4815xC
L, μH
10
22
47
47
10
22
47
47
10
22
47
47
10
22
47
47
10
22
47
47
Inductor
SMD
82103C
82223C
82473C
82473C
82103C
82223C
82473C
82473C
82103C
82223C
82473C
82473C
82103C
82223C
82473C
82473C
82103C
82223C
82473C
82473C
Through Hole
11R103C
11R223C
11R473C
11R473C
11R103C
11R223C
11R473C
11R473C
11R103C
11R223C
11R473C
11R473C
11R103C
11R223C
11R473C
11R473C
11R103C
11R223C
11R473C
11R473C
Capacitor
C, μF
4.7
2.2
1
1
4.7
2.2
1
1
4.7
2.2
1
1
4.7
2.2
1
1
4.7
2.2
1
1
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KDC_MEA1.J01 Page 5 of 10
MEA1 Series
1kVDC Isolated 1W Dual Output DC-DC Converters
TOLERANCE ENVELOPES
The voltage tolerance envelopes show typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to
the changes in output loading.
MEA1
Output Voltage
5%
2%
0%
-4%
25
10
100
75
50
Output Load Current (%)
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
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KDC_MEA1.J01 Page 6 of 10
MEA1 Series
1kVDC Isolated 1W Dual Output DC-DC Converters
EFFICIENCY VS LOAD
5V Input
12V Input
90
90
80
80
15V
12V
9V
5V
60
50
70
Efficiency (%)
Efficiency (%)
70
40
30
50
40
30
20
20
10
0
15V
12V
9V
5V
60
10
0
10
20
30
40
50
60
Load (%)
70
80
90
0
100
0
10
20
30
15V Input
70
80
90
100
70
80
90
100
90
80
80
70
15V
12V
9V
5V
60
50
70
Efficiency (%)
Efficiency (%)
50
60
Load (%)
24V Input
90
40
30
15V
12V
9V
5V
60
50
40
30
20
20
10
10
0
40
0
10
20
30
40
50
60
70
80
90
100
Load (%)
0
0
10
20
30
40
50
60
Load (%)
48V Input
90
80
Efficiency (%)
70
15V
12V
9V
5V
60
50
40
30
20
10
0
0
10
20
30
40
50
60
70
80
90
100
Load (%)
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KDC_MEA1.J01 Page 7 of 10
MEA1 Series
1kVDC Isolated 1W Dual Output DC-DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
DIP package
PIN CONNECTIONS - 14 PIN DIP
SIP package
*
MEA1XXXXXDC
MEA1XXXXXSC
Pin
Function
1
-VIN
7
NC
8
OV
9
+VOUT
11
-VOUT
14
+VIN
PIN CONNECTIONS - 7 PIN SIP
XYYWW
Pin
Function
1
+VIN
2
-VIN
4
-VOUT
5
OV
6
+VOUT
*48V input variants 7.5 (0.295)
All dimensions in mm (inches). Controlling dimension is mm.
All pins on a 2.54 (0.100”) pitch and within ±0.1 (0.004”) of true position from pin 1 at seating plane ‘S’.
For SIP products, excluding MEA1D4805SC, from date code D2224 onwards, products have an embossed logo on the top
of the case. Prior to this date, SIP products have a flat surface finish.
Weight: 2.5g (DIP) 2.3g (SIP)
48V input: 2.8g
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KDC_MEA1.J01 Page 8 of 10
MEA1 Series
1kVDC Isolated 1W Dual Output DC-DC Converters
PACKAGE SPECIFICATIONS (Continued)
RECOMMENDED FOOTPRINT DETAILS
7 Pin SIP Package
14 Pin DIP Package
1.15 (0.045)
Ø 1.00 (0.039)
5 HOLES
1.15 (0.045)
Ø 1.00 (0.039)
5 HOLES
2.54 (0.1)
2.54 (0.1)
2.54 (0.1)
2.54 (0.1)
Unless otherwise stated all dimensions in mm (inches) ±0.5mm.
TUBE OUTLINE DIMENSIONS
14 Pin DIP Tube
7 Pin SIP Tube
9.3 [0.366]
12.0 [0.472]
12.43 [0.489]
14.5 [0.571]
18.0 [0.709]
5.07±0.80 [0.200±0.03]
5.05 [0.199]
Unless otherwise specified all dimensions in mm [inches] ±0.55mm [0.022]..
Tube length (14 Pin DIP) : 520mm [20.472] ±2.0 [0.079].
Tube length (7 Pin SIP) : 520mm [20.472] ±2.0 [0.079].
5.0 [0.197]
Tube Quantity : 25
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KDC_MEA1.J01 Page 9 of 10
MEA1 Series
1kVDC Isolated 1W Dual Output DC-DC Converters
DISCLAIMER
Unless otherwise stated in the datasheet, all products are designed for standard commercial and industrial applications and NOT for safety-critical and/or life-critical
applications.
Particularly for safety-critical and/or life-critical applications, i.e. applications that may directly endanger or cause the loss of life, inflict bodily harm and/or loss or severe
damage to equipment/property, and severely harm the environment, a prior explicit written approval from Murata is strictly required. Any use of Murata standard products for any safety-critical, life-critical or any related applications without any prior explicit written approval from Murata shall be deemed unauthorised use.
These applications include but are not limited to:
•
Aircraft equipment
•
Aerospace equipment
•
Undersea equipment
•
Power plant control equipment
•
Medical equipment
•
Transportation equipment ( automobiles, trains, ships, etc.)
•
Traffic signal equipment
•
Disaster prevention / crime prevention equipment
•
Data Processing equipment
Murata makes no express or implied warranty, representation, or guarantee of suitability, fitness for any particular use/purpose and/or compatibility with any application or device of the buyer, nor does Murata assume any liability whatsoever arising out of unauthorised use of any Murata product for the application of the buyer. The
suitability, fitness for any particular use/purpose and/or compatibility of Murata product with any application or device of the buyer remain to be the responsibility and
liability of the buyer.
Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards that anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause harm, and take appropriate remedial actions. Buyer will fully indemnify and hold
Murata, its affiliated companies, and its representatives harmless against any damages arising out of unauthorised use of any Murata products in any safety-critical and/
or life-critical applications.
Remark: Murata in this section refers to Murata Manufacturing Company and its affiliated companies worldwide including, but not limited to, Murata Power Solutions.
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: https://www.murata.com/en-eu/products/power/requirements
Murata Power Solutions (Milton Keynes) Ltd. 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.
© 2022 Murata Power Solutions (Milton Keynes) Ltd.
www.murata.com
KDC_MEA1.J01 Page 10 of 10
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