MEE3 Series www.murata-ps.com 1kVDC Isolated 3W Single Output DC/DC Converters Power density 2.68W/cm3 Wide temperature performance at full 3 Watt load, –40°C to 85°C3 Parameter Efficiency (Min.) MTTF2 70 45 45 45 60 40 40 40 Isolation Capacitance mVp-p % % pF MHrs 80 84 83 85 82 84 84 85 83 87 86 88 85 88 88 89 32 50 41 51 42 66 77 91 3.9 2.9 4.2 2.5 3.6 3.7 3.4 3.4 Voltage range Reflected ripple current Conditions Min. Typ. Max. Continuous operation, 5V input types Continuous operation, 12V input types 5V input types 12V input types 4.5 10.8 5 12 5 5 5.5 13.2 15 15 Typ. Max. Units 3 W 1.01 1.1 %/% Typ. Max. Units OUTPUT CHARACTERISTICS 5V & 12V input Parameter Conditions 5V, 9V, 12V, & 15V output Rated Power Voltage Set Point Accuracy Line regulation TA=-40°C to 85°C See tolerance envelope High VIN to low VIN No external components required 46 28 26 24 41 21 19 21 INPUT CHARACTERISTICS Industry standard pinout Fully encapsulated with toroidal magnetics 8 6.5 6 6.5 6 5 4.5 4 % 6.3 5.2 4.7 4.7 4.3 3.5 3 2.7 Ripple & Noise (Max)1 703 677 691 679 290 280 280 277 Load Regulation (Typ) mA 600 333 250 200 600 333 250 200 UL 94V-0 package material No heatsink required 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 MEE3S0505SC MEE3S0509SC MEE3S0512SC MEE3S0515SC MEE3S1205SC MEE3S1209SC MEE3S1212SC MEE3S1215SC Load Regulation (Max) UL 60950 recognized Output Voltage FEATURES Nominal Input Voltage Order Code Output Current SELECTION GUIDE Min. Units V mA p-p ISOLATION CHARACTERISTICS Parameter Conditions Min. No electrolytic or tantalum capacitors Isolation test voltage Resistance Flash tested for 1 second Viso= 1000VDC 1000 10 PRODUCT OVERVIEW GENERAL CHARACTERISTICS The MEE3 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 85ºC3. Available in an industry standard SIP package, with a pin compatible power upgrade path from the 1W NME/NKE and 2W NML series’, they are ideally suited for providing local supplies on control system boards with the added benefit of 1kVDC galvanic isolation. Parameter Conditions Min. Switching frequency VDC GΩ Typ. Max. 60 Units kHz TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Specification Storage All output types -40 -50 Case Temperature rise above ambient Cooling Typ. MEE3Sxx05SC, MEE3S0512C MEE3S0515C, MEE3S1209C, MEE3S1212C MEE3S1215C, MEE3S0509C Free air convection Max. Units 85 125 40 35 30 °C ABSOLUTE MAXIMUM RATINGS Lead temperature 1mm from case for 10 seconds Input voltage VIN, MEE3S05 types Input voltage VIN, MEE3S12 types For full details go to www.murata-ps.com/rohs 260°C 7V 15V 1. See Ripple & Noise characterisation method. 2. Calculated using MIL-HDBK-217F FN2 with nominal input voltage at full load. 3. See safety approval section on page 2. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. www.murata-ps.com/support KDC_MEE3.A02 Page 1 of 5 MEE3 Series 1kVDC 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 MEE3 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?” The MEE3 series has been recognized by Underwriters Laboratory for functional isolation. 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 MEE3 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 SAFETY APPROVAL The MEE3 series has been recognized by Underwriters Laboratory (UL) to UL 60950 for functional isolation in a maximum still air ambient temperature of 63°C and/or case temperature limit of 91°C. Case temperature measured on the face opposite the pins. File number E179522 applies. The MEE3 series of converters are not internally fused so to meet the requirement of UL 60950, an input line fuse should always be used. An anti-surge 2.5A should be used for MEE3S05xxSC models, and an anti-surge 1A should be used for MEE3S12xxSC models. All fuses should be UL approved and rated to at least the maximum allowable DC input voltage. www.murata-ps.com/support KDC_MEE3.A02 Page 2 of 5 MEE3 Series 1kVDC 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 MEE3S0505SC MEE3S0509SC MEE3S0512SC MEE3S0515SC MEE3S1205SC MEE3S1209SC MEE3S1212SC MEE3S1215SC L, μH 10 22 47 47 10 22 47 47 C Load DC Inductor SMD Through Hole 84103C 11R103C 84223C 11R223C 84473C 11R473C 84473C 11R473C 84103C 11R103C 84223C 11R223C 84473C 11R473C 84473C 11R473C Capacitor C, μF 4.7 2.2 1 1 4.7 2.2 1 1 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 C2 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 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_MEE3.A02 Page 3 of 5 MEE3 Series 1kVDC Isolated 3W Single Output DC/DC Converters EFFICIENCY VS LOAD MEE3S12xxSC Input Voltage 100 100 90 90 80 80 70 70 Efficiency (%) Efficiency (%) MEE3S05xxSC Input Voltage 60 15V 12V 9V 5V 50 40 60 50 40 30 30 20 20 10 10 0 0 10 20 30 40 50 Load (%) 60 70 80 90 100 15V 12V 9V 5V 0 0 10 20 30 40 50 Load (%) 60 70 80 90 100 www.murata-ps.com/support KDC_MEE3.A02 Page 4 of 5 MEE3 Series 1kVDC Isolated 3W Single Output DC/DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS - 4 PIN SIP SIP Package 14.15 (0.557) Max. 8.15 (0.321) Max. Function 1 2 3 4 -VIN +VIN -VOUT +VOUT TUBE OUTLINE DIMENSIONS MEE3S0505SC XYYWWi 1 2 3 4 4.1±0.5 (0.16±0.020) 17.00 (0.669) 0.4 (0.016) Min. 11.43 (0.45) 10.15 (0.400) Max. Pin 0.55 (0.022) 0.45 (0.018) 3.16 (0.124) 3.87 (0.152) 0.25 (0.100) 1.00-1.45 (0.039-0.057) 4.00 (0.157) 9.05 (0.356) 7.62 (0.300) 0.50±0.15 (0.197±0.006) All dimensions in mm ±0.1mm (inches ±0.004). All pins on a 2.54 (0.1) pitch and within ± 0.25 (0.01) of true position. Weight: 2.3 g Unless otherwise stated all dimensions in mm (inches) ±0.5mm. Tube length: 520mm ±2mm (20.47). Tube Quantity: 35 RECOMMENDED FOOTPRINT DETAILS 4 HOLES 0.1 (0.00394) 1.15 (0.0453) Ø 1.00 (0.0394) 2.54 (0.1) 2.54 (0.1) Unless otherwise stated all dimensions in mm (inches) ±0.5mm. Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED 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. © 2012 Murata Power Solutions, Inc. www.murata-ps.com/support KDC_MEE3.A02 Page 5 of 5