概述
数据手册KDC_MEV 概述
3kVDC Isolated 1W Single Output DC/DC Converters 隔离电压3000VDC 1W单输出DC / DC转换器
KDC_MEV 数据手册
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PDF下载MEV Series
3kVDC Isolated 1W Single Output DC/DC Converters
SELECTION GUIDE
Order Code
V
5
V
5
mA
200
111
84
mA
233
227
226
225
98
%
mVp-p
20
%
80.5
82.5
84
%
84
pF
38
42
40
39
28
50
70
59
kHrs
3583
3286
2886
2419
3308
3054
2705
2290
MEV1S0505SC
MEV1S0509SC
MEV1S0512SC
MEV1S0515SC
MEV1S1205SC
MEV1S1209SC
MEV1S1212SC
MEV1S1215SC
5.2
4
6
30
20
20
15
15
15
15
15
5
9
5
12
10
8
86
5
12
15
5
4.5
4.2
4.4
2.9
2.9
2.4
5.5
5
87
5
67
84.5
80
87
FEATURES
ꢀRoHS compliant
12
12
12
12
200
111
84
4.8
3.2
3.1
2.8
12
8
83.5
86
9
96
83
ꢀEfficiency from 80%
ꢀPower density 0.85W/cm3
12
15
94
7
84
87
67
94
7
82
87
When operated with additional external load capacitance the rise time of the input voltage will determine the maximum external
capacitance value for guaranteed start up. The slower the rise time of the input voltage the greater the maximum value of the
additional external capacitance for reliable start up.
ꢀWide temperature performance at full
1 Watt load, –40°C to 85°C
INPUT CHARACTERISTICS
ꢀUL 94V-0 package material
ꢀNo heatsink required
ꢀIndustry standard pinout
ꢀ3kVDC isolation (1 minute)
ꢀ5V & 12V input
Parameter
Conditions
Min.
4.5
Typ.
5
Max.
5.5
Units
V
Continuous operation, 5V input types
Continuous operation, 12V input types
5V input types
Voltage range
10.8
12
11
5
13.2
20
Reflected ripple current
mA p-p
12V input types
15
ABSOLUTE MAXIMUM RATINGS
Lead temperature 1.5mm from case for 10 seconds
Internal power dissipation
ꢀ5V, 9V, 12V, & 15V output
300°C
300mW
7V
ꢀFully encapsulated with toroidal
magnetics
Input voltage VIN, MEV05 types
Input voltage VIN, MEV12 types
15V
ꢀNo external components required
ꢀNo electrolytic or tantalum capacitors
OUTPUT CHARACTERISTICS
Parameter
Rated Power
Conditions
TA=-40°C to 85°C
Min.
Typ.
1.05
Typ.
Max.
1
Units
W
PRODUCT OVERVIEW
Voltage Set Point Accuracy See tolerance envelope
Line regulation High VIN to low VIN
The MEV series is the new high performance
version of our 1W NMV series. The MEV series
is more efficient and offers improved regulation
performance ≤5% 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 3kVDC galvanic isolation to reduce switching
noise. The MEV series is currently available in an
industry SIP 7 package.
1.2
%/%
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage
Resistance
Conditions
Flash tested for 1 minute
Viso= 1000VDC
Min.
3000
10
Max.
Units
VDC
GΩ
GENERAL CHARACTERISTICS
Parameter
Conditions
Min.
Typ.
60
Max.
Units
kHz
5V input types
12V input types
Switching frequency
75
TEMPERATURE CHARACTERISTICS
Parameter
Specification
Storage
Conditions
All output types
Min.
-40
Typ.
Max.
85
Units
°C
-50
125
20
5V output types
Case Temperature above
ambient
All other output types
Free air convection
20
Cooling
For full details go to
www.murata-ps.com/rohs
1. See Ripple & Noise characterisation method.
2. Calculated using MIL-HDBK-217F FN2 with nominal input voltage at full load.
All specifications typical at T =25°C, nominal input voltage and rated output current unless otherwise specified.
A
www.murata-ps.com
Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_MEVC.A01 Page 1 of 4
MEV Series
3kVDC Isolated 1W Single Output DC/DC Converters
TEMPERATURE DERATING GRAPH
TOLERANCE ENVELOPE
1.5
5%
85°C
2%
1.0
VNOM
0%
0.5 Safe Operating Area
-4%
100
0
75
Output Load Current (%)
10 25
50
-40
100
Ambient Temperature (°C)
150
0
50
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 MEV 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 MEV 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 MEV 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
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
www.murata-ps.com
Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_MEVC.A01 Page 2 of 4
MEV Series
3kVDC Isolated 1W Single Output DC/DC Converters
RIPPLE & NOISE CHARACTERISATION METHOD
All measurement to be taken with the following components connected to the UUT as detailed below.
50 Ohm coax cable, solder connections one end, BNC plug at the other end.
C1
C2
– 1μF X7R multilayer ceramic capacitor rated at minimum 3 x the output voltage of the UUT
– 10μF tantalum capacitor rated at minimum 1.5 x the output voltage of the UUT with ESR of less
than 100 milliohms at 100 kHz e.g. AVX TPS series.
C3
R1
R2
T1
– 100nF multilayer ceramic capacitor, general purpose
– 450 Ohm resistor, carbon film, 1%
– 50 Ohm BNC termination
– 3T of the coax cable through a ferrite toroid eg Ferroxcube TN32/19/13-3E25
RLOAD – Resistive load at the UUT maximum rating. Connections via twisted wires.
Differential Mode Noise Test Schematic
DC/DC Converter
OSCILLOSCOPE
Y INPUT
R2
C1 C2 C3
R1
T1
+
+
Input
Output
SUPPLY
-
-
R LOAD
EFFICIENCY VS LOAD
MEV 5V Input Voltage
MEV 12V Input Voltage
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
15V
12V
9V
15V
12V
9V
5V
5V
0
10
20
30
40
50
Load (%)
60
70
80
90
100
0
10
20
30
40
50
60
70
80
90
100
Load (%)
www.murata-ps.com
Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_MEVC.A01 Page 3 of 4
MEV Series
3kVDC Isolated 1W Single Output DC/DC Converters
PACKAGE SPECIFICATIONS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT DETAILS
4 HOLES
0.77 (19.50)
0.045 (1.15)
0.040 (1.00)
0.00394 (0.1)
Ø
0.236
(6.00)
0.1 (2.54)
0.394
(10.00)
0.0016
(0.40) Min.
MEV1S0505SC
XYYWWi
1
2
5
7
0.1 (2.54)
0.181 (4.60)
0.142 (3.60)
0.50 (0.020)
0.1 (2.54)
Unless otherwise stated all dimensions in inches (mm) 0.5mm.
TUBE OUTLINE DIMENSIONS
ꢀꢁꢋꢍꢍꢄꢅꢃꢁꢋꢀꢈꢄ
0.099 (2.52)
0.061 (1.54)
0.0118 (0.30)
0.0079 (0.20)
0.049 (1.25)
0.6 (15.24)
Weight: 2.3g
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.
PIN CONNECTIONS
Pin
1
Function
+VIN
2
-VIN
5
-VOUT
7
+VOUT
ꢀꢁꢊꢄꢅꢌꢁꢀꢀꢈꢄ
Tube Quantity : 25
Unless otherwise stated all dimensions in inches (mm) 0.5mm.
Tube length : 20.47 (520mm 2mm).
USA:
Mansfield (MA), Tel: (508) 339 3000, email: sales@murata-ps.com
Canada: Toronto, Tel: (866) 740 1232, email: toronto@murata-ps.com
UK:
Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com
Murata Power Solutions, Inc.
France:
Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Germany: München, Tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: sales@murata-ps.com ISO 9001 & ISO 14001 REGISTERED
Japan:
Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com
Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com
China:
Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com
Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
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
Singapore: Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com
notice.
© 2008 Murata Power Solutions, Inc.
www.murata-ps.com
Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232
KDC_MEVC.A01 Page 4 of 4
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