MEV3 Series
3kVDC Isolated 3W Single Output DC/DC Converters
SELECTION GUIDE
Load Regulation (Typ) Load Regulation (Max) Efficiency (Min.) Input Current at Rated Load Efficiency (Typ.) Output Current Ripple & Noise (Typ)1 Ripple & Noise (Max)1 Nominal Input Voltage Isolation Capacitance pF
28 43 32 40 34 50 63 70
Output Voltage
Order Code
V
MEV3S0505SC MEV3S0509SC MEV3S0512SC MEV3S0515SC MEV3S1205SC MEV3S1209SC MEV3S1212SC MEV3S1215SC 5 5 5 5 12 12 12 12
V
5 9 12 15 5 9 12 15
mA
600 333 250 200 600 333 250 200
mA
700 680 700 700 300 280 280 280 6.8 5.5 5 5 4.5 3.6 3.2 2.8
%
8 7 7 6 6 5 4.5 4
mVp-p
39 24 20 18 34 22 16 13 50 35 35 30 50 35 30 30
%
81.5 85.3 81.5 85 81.5 85.5 86 87
%
83 87 85.5 87.5 84 87.5 88 89
kHrs
6029 5163 5995 5426 6063 6056 6572 5754
FEATURES
RoHS compliant Typical efficiency from 83% Power density 1.9W/cm3 Wide temperature performance at full 3 Watt load, –40°C to 85°C UL 94V-0 package material No heatsink required Industry standard pinout 3kVDC isolation (1 minute) 5V & 12V input 5V, 9V, 12V, & 15V output Fully encapsulated with toroidal magnetics No external components required No electrolytic or tantalum capacitors UL 60950 recognition pending
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INPUT CHARACTERISTICS
Parameter
Voltage range Reflected ripple current
Conditions
Continuous operation, 5V input types Continuous operation, 12V input types 5V input types 12V input types
Min.
4.5 10.8
Typ.
5 12 8 6.5
Max.
5.5 13.2 18 15
Units
V mA p-p
OUTPUT CHARACTERISTICS
Parameter
Rated Power Voltage Set Point Accuracy Line regulation
Conditions
TA=-40°C to 85°C See tolerance envelope High VIN to low VIN
Min.
Typ.
Max.
3
Units
W %/%
1.01
1.1
ISOLATION CHARACTERISTICS
Parameter
Isolation test voltage Resistance
Conditions
Flash tested for 1 minute Viso= 1000VDC
Min.
3000 10
Typ.
Max.
Units
VDC GΩ
GENERAL CHARACTERISTICS
Parameter
Switching frequency
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.
Conditions
Min.
Typ.
60
Max.
Units
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Specification Storage Case Temperature rise above ambient Cooling
Conditions
All output types MEV3S0505SC All other types Free air convection
Min.
-40 -50
Typ.
Max.
85 125 37 35
Units
°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
MTTF2
MEV3 Series
3kVDC Isolated 3W Single Output DC/DC Converters
TEMPERATURE DERATING GRAPH OUTPUT VOLTAGE TOLERANCE ENVELOPE
5%
4.5
Output Voltage
Output Power (W)
Typic a
VNOM
2%
3.0 1.5 0 -40
85°C
l Loa
d Lin
e
0%
Safe Operating Area
10 25 50 75 Output Load Current (%)
-4% 100
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 fu.