Murata MER1S1212SC 1kvdc isolated 1w single output dc/dc converter Datasheet

MER1 Series
www.murata-ps.com
1kVDC Isolated 1W Single Output DC/DC Converters
Industry standard pinout
1kVDC isolation
5V, 12V, 15V, 24V, & 48V inputs
5V, 9V, 12V, & 15V output
Fully encapsulated with toroidal
magnetics
No external components required
15
11
9
9
11
9
9
7
10
8
7
7
15
10
9
9
19
14
12
11
mVp-p
25
20
17
17
20
17
17
17
20
17
15
15
25
20
20
20
30
25
25
25
%
%
pF
kHrs
82
84
85
86
82
84
86
85
81
83
84
86
81
83
84
84
77
80
79
80
84
87
87
87.5
84
86.5
88.5
88
83.5
86.5
87.5
89
84
86.5
87.5
87.5
79.5
83
82.5
83
50
55
53
54
49
66
91
78
43
68
75
107
52
75
91
101
47
76
88
103
Efficiency (Min.)
6.5
5
5.2
5
5
3.4
3.4
2.7
4.5
2.8
2.7
2.8
3.7
2.5
2.4
2.3
3.9
2.8
2.4
2.4
%
5.5
4.2
4.6
4.4
4.5
3
3
2.4
3.8
2.4
2.3
2.4
3.1
2.1
1.8
1.7
3.4
2.4
2.0
1.9
Ripple & Noise (Max)1
Load Regulation (Typ)
Output Current
233
226
227
225
97
95
93
94
79
77
76
75
50
48
48
48
26
25
25
25
MTTF2
No heatsink required
mA
200
111
84
67
200
111
84
67
200
111
84
67
200
111
84
67
200
111
84
67
Isolation Capacitance
UL 94V-0 package material
mA
5
9
12
15
5
9
12
15
5
9
12
15
5
9
12
15
5
9
12
15
Efficiency (Typ.)
Wide temperature performance at full
load, –40°C to 85°C
V
5
5
5
5
12
12
12
12
15
15
15
15
24
24
24
24
48
48
48
48
Ripple & Noise (Typ)1
Typical efficiency to 89%
V
Load Regulation (Max)
RoHS compliant
Output Voltage
FEATURES
MER1S0505SC
MER1S0509SC
MER1S0512SC
MER1S0515SC
MER1S1205SC
MER1S1209SC
MER1S1212SC
MER1S1215SC
MER1S1505SC
MER1S1509SC
MER1S1512SC
MER1S1515SC
MER1S2405SC
MER1S2409SC
MER1S2412SC
MER1S2415SC
MER1S4805SC
MER1S4809SC
MER1S4812SC
MER1S4815SC
Nominal Input
Voltage
Order Code
Input Current at
Rated Load
SELECTION GUIDE
No electrolytic or tantalum capacitors
UL 60950 recognition pending
INPUT CHARACTERISTICS
Parameter
PRODUCT OVERVIEW
The MER1 series is the new high performance
version of our 1W NMR series. The MER1 series
is more efficient and offers improved regulation
performance for applications where a wide output
voltage variation can not be tolerated. They are
ideally suited for providing local supplies on
control system boards with the added benefit
of 1kVDC galvanic isolation to reduce switching
noise.
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
22.6
43.2
5
12
15
24
48
7
4
4
8
25
5.5
13.2
16.5
26.4
52.8
15
12
12
20
40
Units
V
mA p-p
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds
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
260°C
7V
15V
18V
28V
54V
1. See Ripple & Noise characterisation method.
2. Calculated using MIL-HDBK-217F FN2 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
www.murata-ps.com
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2009/09/15
KDC_MER1.A01 Page 1 of 6
MER1 Series
1kVDC Isolated 1W Single Output 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
Min.
Typ.
Max.
Units
1
W
1.05
1.1
%/%
Typ.
Max.
Units
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min.
Isolation test voltage
Resistance
Flash tested for 1 second
Viso= 1000VDC
1000
10
Parameter
Conditions
Min.
Switching frequency
5V & 48V input types
12V & 15V input types
24V input types
VDC
GΩ
GENERAL CHARACTERISTICS
Typ.
Max.
62
75
82
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
All output types
-40
-50
Case Temperature rise above ambient
Cooling
Typ.
5V, 12V, & 15V input types
24V & 48V input types
Free air convection
TEMPERATURE DERATING GRAPH
Max.
Units
85
125
15
20
°C
OUTPUT VOLTAGE TOLERANCE ENVELOPE
5%
Output Voltage
Output Power (W)
1.5
85°C
1.0
0.5
2%
VNOM
10
0
-40
100
50
0
Ambient Temperature (°C)
150
0%
25
50
75
-4%
100
Output Load Current (%)
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.
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of
260°C for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped
over Matte Tin with Nickel Preplate. They are backward compatible with Sn/Pb soldering systems.
For further information, please visit www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2009/09/15
KDC_MER1.A01 Page 2 of 6
MER1 Series
1kVDC Isolated 1W Single Output DC/DC Converters
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.
MER1S0505SC
MER1S0509SC
MER1S0512SC
MER1S0515SC
MER1S1205SC
MER1S1209SC
MER1S1212SC
MER1S1215SC
MER1S1505SC
MER1S1509SC
Start-up time
μs
600
1730
3780
6700
750
2605
3754
5280
704
1859
MER1S1512SC
MER1S1515SC
MER1S2405SC
MER1S2409SC
MER1S2412SC
MER1S2415SC
MER1S4805SC
MER1S4809SC
MER1S4812SC
MER1S4815SC
Start-up time
μs
3375
5090
431
245
1634
2682
512
1432
2528
3884
Typical Start-Up Wave Form
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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2009/09/15
KDC_MER1.A01 Page 3 of 6
MER1 Series
1kVDC Isolated 1W Single 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 <2% of the rated voltage of the DC/DC converter. The SRF (Self Resonant Frequency) should be
>20MHz.
L
Power
Source
MER1S0505SC
MER1S0509SC
MER1S0512SC
MER1S0515SC
MER1S1205SC
MER1S1209SC
MER1S1212SC
MER1S1215SC
MER1S1505SC
MER1S1509SC
MER1S1512SC
MER1S1515SC
MER1S2405SC
MER1S2409SC
MER1S2412SC
MER1S2415SC
MER1S4805SC
MER1S4809SC
MER1S4812SC
MER1S4815SC
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
DC
C
Load
DC
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
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 MER1 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 MER1 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 MER1 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.
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Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2009/09/15
KDC_MER1.A01 Page 4 of 6
MER1 Series
1kVDC Isolated 1W Single Output DC/DC Converters
EFFICIENCY VS LOAD
MER1S05XXSC
MER1S12XXSC
90
90
80
70
5V
60
9V
12V
15V
50
70
Efficiency (%)
Efficiency (%)
80
40
15V
40
30
20
20
10
10
0
0
0
10
20
30
40
50
60
Load (%)
70
80
90
0
100
10
20
30
40
50
60
70
80
90
100
70
80
90
100
Load (%)
MER1S15XXSC
MER1S24XXSC
90
90
80
80
5V
60
9V
12V
50
15V
40
60
30
20
10
10
0
20
30
40
50
60
70
80
90
100
12V
40
20
10
9V
50
30
0
5V
70
Efficiency (%)
70
Efficiency (%)
12V
50
30
0
5V
9V
60
15V
0
10
20
30
40
50
60
Load (%)
Load (%)
MER1S48XXSC
90
80
Efficiency (%)
70
5V
60
9V
50
40
12V
30
15V
20
10
0
0
10
20
30
40
50
60
70
80
90
100
Load (%)
www.murata-ps.com
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2009/09/15
KDC_MER1.A01 Page 5 of 6
MER1 Series
1kVDC Isolated 1W Single Output DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT DETAILS
0.774 (19.65)
(Max.)
 )0-&4
0.242
(6.15)
Max. †
0.4
(10.15)
Max.
MER1S0505SC
XYYWWi
1
0.181 (4.60)
0.141 (3.60)
2
4
0.0016
(0.4) Min.
6
0.1 (2.54)
Unless otherwise stated all dimensions in inches (mm) ±0.5mm.
0.074±0.02
(1.88±0.50)
TUBE OUTLINE DIMENSIONS
0.0118 (0.30)
0.0079 (0.20)
0.05
(1.25)
0.5 (12.70)
1
2
4
6
Function
+VIN
-VIN
-VOUT
+VOUT
Pin
PIN CONNECTIONS
Unless otherwise stated, 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.
† 48V input variants: 0.301 (7.65).
Weight: 48Vin types: 2.75g (Typ.), all other types: 2.25g (Typ.)
Unless otherwise stated all dimensions in inches (mm) ±0.5mm.
Tube length : 20.47 (520mm ±2mm).
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
www.murata-ps.com/locations
Tube Quantity : 25
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.
© 2009 Murata Power Solutions, Inc.
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
2009/09/15
KDC_MER1.A01 Page 6 of 6
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