MEV3 Series www.murata-ps.com 3kVDC Isolated 3W Single Output DC/DC Converters 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 Parameter MTTF2 Isolation Capacitance 6029 5163 5995 5426 6063 6056 6572 5754 Voltage range Reflected ripple current Max. 5.5 13.2 18 15 Typ. Max. Units 3 W 1.01 1.1 %/% Typ. Max. Units 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 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 Cooling MEV3S0505SC All other types Free air convection Typ. Max. Units 85 125 37 35 °C ABSOLUTE MAXIMUM RATINGS Lead temperature 1mm from case for 10 seconds Internal power dissipation Input voltage VIN, MEV05 types Input voltage VIN, MEV12 types kHrs 28 43 32 40 34 50 63 70 5 12 8 6.5 Conditions 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. pF Typ. TA=-40°C to 85°C See tolerance envelope High VIN to low VIN PRODUCT OVERVIEW % 83 87 85.5 87.5 84 87.5 88 89 4.5 10.8 Rated Power Voltage Set Point Accuracy Line regulation No electrolytic or tantalum capacitors % 81.5 85.3 81.5 85 81.5 85.5 86 87 Min. Parameter No external components required 50 35 35 30 50 35 30 30 Conditions OUTPUT CHARACTERISTICS Fully encapsulated with toroidal magnetics mVp-p Continuous operation, 5V input types Continuous operation, 12V input types 5V input types 12V input types 3kVDC isolation (1 minute) 5V, 9V, 12V, & 15V output 39 24 20 18 34 22 16 13 INPUT CHARACTERISTICS Industry standard pinout 5V & 12V input 8 7 7 6 6 5 4.5 4 % 6.8 5.5 5 5 4.5 3.6 3.2 2.8 Efficiency (Min.) 700 680 700 700 300 280 280 280 Ripple & Noise (Max)1 mA 600 333 250 200 600 333 250 200 Load Regulation (Typ) Input Current at Rated Load mA 5 9 12 15 5 9 12 15 Efficiency (Typ.) Typical efficiency from 83% V 5 5 5 5 12 12 12 12 Ripple & Noise (Typ)1 RoHS compliant V MEV3S0505SC MEV3S0509SC MEV3S0512SC MEV3S0515SC MEV3S1205SC MEV3S1209SC MEV3S1212SC MEV3S1215SC Load Regulation (Max) UL 60950 recognised Output Voltage FEATURES Nominal Input Voltage Order Code Output Current SELECTION GUIDE 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/support KDC_MEV3.B04 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 75 -4% 100 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?” The MEV3 series has been recognized 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 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. SAFETY APPROVAL The MEV3 series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation in a maximum ambient temperature of 85ºC and/or case temperature limit of 130ºC. Case temperature measured on the face opposite the pins. File number E151252 applies. The MEV3 Series of converters are not internally fused so to meet the requirements of UL 60950 an input line fuse should always be used. An anti-surge 2.5A should be used for MEV3S05xxSC models, and an anti-surge 1A should be used for MEV3S12xxSC models. 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. 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/support KDC_MEV3.B04 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/support KDC_MEV3.B04 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. 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 90 80 80 70 70 15V 12V 9V 5V 60 50 Efficiency (%) Efficiency (%) MEV3512XXSC Input Voltage 40 30 50 40 30 20 20 10 10 0 15V 12V 9V 5V 60 0 10 20 30 40 50 60 Load (%) 70 80 90 100 0 0 10 20 30 40 50 60 70 80 90 100 Load (%) www.murata-ps.com/support KDC_MEV3.B04 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) 0.020 (0.50) 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 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. 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 Tube Quantity : 25 This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ 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. © 2013 Murata Power Solutions, Inc. www.murata-ps.com/support KDC_MEV3.B04 Page 5 of 5