MURATA-PS MEV3

MEV3 Series
3kVDC Isolated 3W Single Output DC/DC Converters
Wide temperature performance at full
3 Watt load, –40°C to 85°C
UL 94V-0 package material
Parameter
pF
kHrs
28
43
32
40
34
50
63
70
6029
5163
5995
5426
6063
6056
6572
5754
MTTF2
Isolation
Capacitance
Efficiency (Min.)
%
83
87
85.5
87.5
84
87.5
88
89
Voltage range
Reflected ripple current
Typ.
Max.
4.5
10.8
5
12
8
6.5
5.5
13.2
18
15
Typ.
Max.
Units
3
W
1.01
1.1
%/%
Typ.
Max.
Units
Conditions
Rated Power
Voltage Set Point Accuracy
Line regulation
TA=-40°C to 85°C
See tolerance envelope
High VIN to low VIN
UL 60950 recognition pending
%
81.5
85.3
81.5
85
81.5
85.5
86
87
Min.
Parameter
No electrolytic or tantalum capacitors
50
35
35
30
50
35
30
30
Conditions
OUTPUT CHARACTERISTICS
No external components required
mVp-p
Continuous operation, 5V input types
Continuous operation, 12V input types
5V input types
12V input types
5V & 12V input
Fully encapsulated with toroidal
magnetics
39
24
20
18
34
22
16
13
INPUT CHARACTERISTICS
3kVDC isolation (1 minute)
5V, 9V, 12V, & 15V output
8
7
7
6
6
5
4.5
4
%
6.8
5.5
5
5
4.5
3.6
3.2
2.8
Ripple & Noise
(Max)1
700
680
700
700
300
280
280
280
Load Regulation
(Typ)
mA
600
333
250
200
600
333
250
200
No heatsink required
Industry standard pinout
Input Current at
Rated Load
mA
5
9
12
15
5
9
12
15
Efficiency (Typ.)
Power density 1.9W/cm3
V
5
5
5
5
12
12
12
12
Ripple & Noise
(Typ)1
Typical efficiency from 83%
V
MEV3S0505SC
MEV3S0509SC
MEV3S0512SC
MEV3S0515SC
MEV3S1205SC
MEV3S1209SC
MEV3S1212SC
MEV3S1215SC
Load Regulation
(Max)
RoHS compliant
Output
Voltage
FEATURES
Nominal Input
Voltage
Order Code
Output Current
SELECTION GUIDE
Min.
Units
V
mA p-p
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min.
Isolation test voltage
Resistance
Flash tested for 1 minute
Viso= 1000VDC
3000
10
VDC
GΩ
GENERAL CHARACTERISTICS
PRODUCT OVERVIEW
The MEV3 series is a new range of high
performance 3W DC/DC converters, offering 3W
of available output power in a previously rated
2W package capable of operation over the full
industrial temperature range of -40ºC to 85ºC.
Available in an industry standard SIP package,
with a pin compatible power upgrade path from
the 1W NMV/MEV and 2W NMK series’, they
are ideally suited for providing local supplies on
control system boards with the added benefit of
3kVDC galvanic isolation.
Parameter
Conditions
Min.
Switching frequency
Typ.
Max.
60
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Conditions
Min.
Specification
Storage
All output types
-40
-50
Case Temperature rise
above ambient
MEV3S0505SC
All other types
Free air convection
Cooling
Typ.
Max.
Units
85
125
37
35
°C
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
Input voltage VIN, MEV05 types
Input voltage VIN, MEV12 types
260°C
700mW
7V
15V
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
KDC_MEV3C.A01 Page 1 of 5
MEV3 Series
3kVDC Isolated 3W Single Output DC/DC Converters
TEMPERATURE DERATING GRAPH
OUTPUT VOLTAGE TOLERANCE ENVELOPE
5%
85°C
3.0
1.5
Output Voltage
Output Power (W)
4.5
l Loa
VNOM
d Lin
e
0%
Safe Operating Area
10
0
-40
2%
Typic
a
25
50
-4%
100
75
Output Load Current (%)
100
50
0
Ambient Temperature (°C)
150
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.
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 MEV3 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 MEV3 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 MEV3 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 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
KDC_MEV3C.A01 Page 2 of 5
MEV3 Series
3kVDC Isolated 3W 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.
MEV3S0505SC
MEV3S0509SC
MEV3S0512SC
MEV3S0515SC
MEV3S1205SC
MEV3S1209SC
MEV3S1212SC
MEV3S1215SC
Typical Start-Up Wave Form
Start-up time
μs
165
300
650
1200
75
200
350
410
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
www.murata-ps.com
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
KDC_MEV3C.A01 Page 3 of 5
MEV3 Series
3kVDC Isolated 3W 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
DC
Power
Source
Inductor
SMD
Through Hole
84103C
11R103C
84223C
11R223C
84473C
11R473C
84473C
11R473C
84103C
11R103C
84223C
11R223C
84473C
11R473C
84473C
11R473C
L, μH
10
22
47
47
10
22
47
47
MEV3S0505SC
MEV3S0509SC
MEV3S0512SC
MEV3S0515SC
MEV3S1205SC
MEV3S1209SC
MEV3S1212SC
MEV3S1215SC
Load
C
DC
Capacitor
C, μF
4.7
2.2
1
1
4.7
2.2
1
1
EFFICIENCY VS LOAD
MEV3505xxSC Input Voltage
90
80
80
70
70
15V
12V
9V
5V
60
50
Efficiency (%)
Efficiency (%)
MEV3512XXSC Input Voltage
90
40
30
50
40
30
20
20
10
10
0
15V
12V
9V
5V
60
0
10
20
30
40
50
60
Load (%)
www.murata-ps.com
70
80
90
100
0
0
10
20
30
40
50
60
70
80
90
100
Load (%)
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
KDC_MEV3C.A01 Page 4 of 5
MEV3 Series
3kVDC Isolated 3W Single Output DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT DETAILS
4 HOLES
0.774 (19.65) (Max.)
(1.15)
Ø 0.045
0.040 (1.00)
0.301
(7.65)
(Max.)
0.00394 (0.1)
0.1 (2.54)
0.4
(10.15)
(Max.)
MEV3S0505SC
1 2
0.181 (4.60)
0.142 (3.60)
0.0016
(0.40) Min.
XYYWW
5
7
0.1 (2.54)
0.50 (0.020)
0.1 (2.54)
Unless otherwise stated all dimensions in inches (mm) ±0.5mm.
0.099 (2.52)
0.061 (1.54)
0.0118 (0.30)
0.0079 (0.20)
TUBE OUTLINE DIMENSIONS
0.057 (1.45)
0.039 (1.00)
0.6 (15.24)
Weight: 2.9g
1
2
5
7
Function
+VIN
-VIN
-VOUT
+VOUT
PIN CONNECTIONS
Pin
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.
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.
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
USA:
Mansfield (MA), Tel: (508) 339 3000, email: [email protected]
Canada:
Toronto, Tel: (866) 740 1232, email: [email protected]
UK:
Milton Keynes, Tel: +44 (0)1908 615232, email: [email protected]
France:
Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: fran[email protected]
Germany: München, Tel: +49 (0)89-544334-0, email: [email protected]
Japan:
Tokyo, Tel: 3-3779-1031, email: [email protected]
Kyoto, Tel: 81-75-955-7269, email: [email protected]
China:
Shanghai, Tel: +86 215 027 3678, email: [email protected]
Guangzhou, Tel: +86 208 221 8066, email: [email protected]
www.murata-ps.com email: [email protected] ISO 9001 & ISO 14001 REGISTERED
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.
www.murata-ps.com
Tube Quantity : 25
Singapore: Parkway Centre, Tel: +65 6348 9096, email: [email protected]
Technical enquiries email: [email protected], tel: +44 (0)1908 615232
KDC_MEV3C.A01 Page 5 of 5