NXE2 Series www.murata-ps.com Isolated 2W Single Output SM DC/DC Converters FEATURES Patents pending Lower Profile NXE2S1212MC 12 12 210 NXE2S1215MC 12 15 205 UL60950 Recognition pending ANSI/AAMI ES60601-1 Recognition pending 3kVDC Isolation “Hi Pot Test” Substrate Embedded Transformer Automated Manufacture 9 12 55 85 68.5 72 2.1 1853 18868 400 10.5 12 50 85 74.5 77 2.1 2163 15152 167 7 8.5 25 55 74.5 76.5 2.1 1848 22472 133 8.5 11 30 60 76 79 2.1 2181 22472 % % pF Parameter Voltage range Input reflected ripple current Conditions Min. Typ. Max. Continuous operation, 5V input types 4.5 5 5.5 Continuous operation, 12V input types NXE2S0505MC NXE2S1205MC NXE2S1212MC NXE2S1215MC 10.8 12 4 2.5 3.3 2.8 13.2 Typ. Max. Units V mA p-p ISOLATION CHARACTERISTICS Parameter Conditions Min. Halogen Free Isolation voltage Resistance Flash tested for 1 second Viso= 1000VDC 3000 10 PRODUCT OVERVIEW GENERAL CHARACTERISTICS The NXE2 series is a new range of low cost, lower profile, fully automated manufacture surface mount DC/DC converters. The NXE2 series automated manufacturing process with substrate embedded transformer, offers increased product reliability and repeatability of performance in a halogen free, iLGA inspectable package. The NXE2 series, industry standard footprint is compatible with existing designs. Parameter Conditions Switching frequency NXE2S0505MC NXE2S1205MC NXE2S1212MC NXE2S1215MC The NXE2 series has a MSL rating 2, and is compatible with a peak reflow solder temperature of 245ÚC as per J-STD-020 and J-STD-075. MIL. Tel. kHrs INPUT CHARACTERISTICS Industry Standard Footprint Short Circuit Protection3 400 mVp-p mVp-p MTTF2 220 Isolation Capacitance 542 5 Efficiency (Typ) 5 12 % Efficiency (Min) 5 NXE2S1205MC % Output Ripple & Noise (Max) NXE2S0505MC mA Output Ripple & Noise (Typ) mA Load Regulation (Max) Input Current V Load Regulation (Typ) Output Voltage V Order Code1 Output Current Nominal Input Voltage SELECTION GUIDE Min. Units VDC GΩ Typ. Max. 130 100 115 100 Units kHz OUTPUT CHARACTERISTICS Parameter Conditions Rated power Voltage set point accuracy TA=-40°C to 85°C See tolerance envelopes High VIN to low VIN, All other variants High VIN to low VIN ,1205 variant Line regulation4 Min. Typ. Max. Units 2.0 W 1.15 1.15 1.2 1.26 %/% Typ. Max. Units TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Specification Storage See derating graphs -40 -50 Case temperature rise above ambient Cooling NXE2S0505MC NXE2S1205MC NXE2S1212MC NXE2S1215MC Free air convection 85 125 36 32 28 26 °C ABSOLUTE MAXIMUM RATINGS Input voltage VIN, NXE2S05 types Input voltage VIN, NXE2S12 types For full details go to www.murata-ps.com/rohs www.murata-ps.com 7V 15V 1. Components are supplied in tape and reel packaging, please refer to package specification section. Orderable part numbers are NXE2S0505MC-R7 (180 pieces per reel), or NXE2S0505MC-R13 (800 pieces per reel). 2. Calculated using MIL-HDBK-217 FN2 and Telcordia SR-332 calculation model with nominal input voltage at full load. 3. Please refer to short circuit application notes. 4. NXE2S1205MC line regulation may increase to 2.15 %/% at the operating temperature limits. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. All enquiries: www.murata-ps.com/support KDC_NXE2.A01 Page 1 of 8 NXE2 Series Isolated 2W Single Output SM DC/DC Converters 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 NXE2 series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 3kVDC for 1 second. A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?” The NXE2 series is pending recognition by Underwriters Laboratory. 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 NXE2 series has a PCB embedded isolated transformer, using FR4 as an insolation barrier between primary and secondary windings. While parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the FR4 insulation properties. Any material, including FR4 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 should be reduced by 20% from specified test voltage. This consideration equally applies to agency recognized parts rated for better than functional isolation where the insulation is always supplemented by a further insulation system of physical spacing or barriers. SAFETY APPROVAL ANSI/AAMI ES60601-1 The NXE2 series is pending recognition ANSI/AAMI ES60601-1. UL 60950 The NXE2 series is pending recognition by Underwriters Laboratory (UL) to UL 60950. FUSING The NXE2 Series of converters are not internally fused so to meet the requirements of UL an anti-surge input line fuse should always be used with ratings as defined below. Input Voltage, 5V 1A Input Voltage, 12V 400mA All fuses should be UL recognized, V rated. CHARACTERISATION TEST METHODS 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 All enquiries: www.murata-ps.com/support KDC_NXE2.A01 Page 2 of 8 NXE2 Series Isolated 2W Single Output SM DC/DC Converters RoHS COMPLIANCE, MSL AND PSL INFORMATION This series is compatible with Pb-Free soldering systems and is also backward compatible with Sn/Pb soldering systems. The NXE2 series has a process, moisture, and reflow sensitivity classification of MSL2 PSL R7F as defined in J-STD-020 and J-STD-075. This translates to: MSL2 = 1 year floor life, PSL R7F = Peak reflow temperature 245°C with a limitation on the time above liquidus (217°C) which for this series is 90sec max. The pin termination finish on this product series is Gold with a plating thickness of 0.12 microns. TOLERANCE ENVELOPES The voltage tolerance envelopes show typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to changes in output loading and set point accuracy. NXE2S1205MC & NXE2S1212MC output voltage will be outside the tolerance envelope at operating temperature limits. NXE2S0505MC NXE2S1205MC +15% +11% +4% +1% Output Voltage Output Voltage +9% +5% 0% -7% 10 25 75 50 Output Load Current (%) 100 10 25 +5% +2% -2% +6% +3% -2% -6% -6% 10 25 75 50 Output Load Current (%) www.murata-ps.com 100 NXE2S1215MC Output Voltage Output Voltage NXE2S1212MC 75 50 Output Load Current (%) 100 10 25 75 50 Output Load Current (%) 100 All enquiries: www.murata-ps.com/support KDC_NXE2.A01 Page 3 of 8 NXE2 Series Isolated 2W Single Output SM DC/DC Converters EFFICIENCY VS LOAD NXE2S1205MC 90 90 80 80 70 70 60 60 Efficiency (%) Efficiency (%) NXE2S0505MC 50 40 50 40 30 30 20 20 10 10 0 0 0 10 20 30 40 50 60 70 80 90 100 110 0 10 20 30 40 Load (%) 60 70 80 90 100 110 70 80 90 100 110 Load (%) NXE2S1212MC NXE2S1215MC 90 90 80 80 70 70 60 60 Efficiency (%) Efficiency (%) 50 50 40 50 40 30 30 20 20 10 10 0 0 0 10 20 30 40 50 60 Load (%) www.murata-ps.com 70 80 90 100 110 0 10 20 30 40 50 60 Load (%) All enquiries: www.murata-ps.com/support KDC_NXE2.A01 Page 4 of 8 NXE2 Series Isolated 2W Single Output SM DC/DC Converters DERATING GRAPHS NXE2S1205MC 100 90 80 70 60 50 40 30 20 10 0 Load (%) Load (%) NXE2S0505MC 70 75 80 85 90 95 100 90 80 70 60 50 40 30 20 10 0 100 70 75 Temperature (°C) Load (%) Load (%) 80 85 Temperature (°C) www.murata-ps.com 90 95 100 95 100 NXE2S1215MC 100 90 80 70 60 50 40 30 20 10 0 75 85 Temperature (°C) NXE2S1212MC 70 80 90 95 100 100 90 80 70 60 50 40 30 20 10 0 70 75 80 85 90 Temperature (°C) All enquiries: www.murata-ps.com/support KDC_NXE2.A01 Page 5 of 8 NXE2 Series Isolated 2W Single Output SM DC/DC Converters APPLICATION NOTES Short Circuit Performance The NXE2S0505MC offers short circuit protection at low ambient temperatures from -40°C to the temperatures shown in the below graph. The NXE2S12XXMC variants offer only momentary short circuit protection. 1000 Time (seconds) 100 Nominal Vin High Vin 10 1 25 35 45 55 65 75 85 dĞŵƉĞƌĂƚƵƌĞ;ȗͿ Advisory Notes Minimum Load The NXE2 series is not hermetically sealed, customers should ensure that parts are fully dried before input power application. 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 & 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. Typical Start-Up Wave Form NXE2S0505MC NXE2S1205MC NXE2S1212MC NXE2S1215MC Start-up time μS 260 160 550 870 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. NXE2S0505MC NXE2S1205MC NXE2S1212MC NXE2S1215MC L, μH 22 22 22 22 www.murata-ps.com Inductor SMD Through Hole 82223C 15223C 82223C 15223C 82223C 15223C 82223C 15223C Capacitor C, μF 10 10 10 47 L Power Source DC C Load DC All enquiries: www.murata-ps.com/support KDC_NXE2.A01 Page 6 of 8 NXE2 Series Isolated 2W Single Output SM DC/DC Converters EMC FILTERING AND SPECTRA FILTERING The following table shows the additional input capacitor and input inductor typically required to meet EN 55022 Curve B Quasi-Peak EMC limit, as shown in the following plots. L DC C DC Part Number Capacitor Inductor NXE2S0505MC NXE2S1205MC NXE2S1212MC NXE2S1215MC 4.7μF 4.7μF 3.3μF 3.3μF 15μH 15μH 10μH 22μH 90 80 80 70 70 60 60 dBuV 90 50 40 50 40 30 30 20 20 10 10 0 1.00E+05 dBuV NXE2S1205MC 100 1.00E+06 1.00E+07 0 1.00E+05 1.00E+08 NXE2S1212MC NXE2S1215MC 100 90 90 80 80 70 70 60 60 50 40 40 30 20 20 10 10 1.00E+06 1.00E+07 Frequency (Hz) 1.00E+08 1.00E+08 50 30 www.murata-ps.com 1.00E+07 Frequency (Hz) 100 0 1.00E+05 1.00E+06 Frequency (Hz) dBuV dBuV NXE2S0505MC 100 0 1.00E+05 1.00E+06 1.00E+07 1.00E+08 Frequency (Hz) All enquiries: www.murata-ps.com/support KDC_NXE2.A01 Page 7 of 8 NXE2 Series Isolated 2W Single Output SM DC/DC Converters PACKAGE SPECIFICATIONS Mechanical Dimensions Pin Connections 12.70 [0.500] (7.62 [0.300]) SMA PICKUP POINT Pin Function 1 3 7 8 14 -Vin +Vin -Vout +Vout NA NA - Not available for electrical connection. 4.41±0.40 [0 .174±0.016] S SEATING PLANE SMA PICKUP POINT (TOP OF PCB) 3.16±0.24 [0.124±0.009] x5 PLACES 1.37 [0.060] 0.1 (0.004) 2.54 [0.100] 1 3 S x5 PINS 7 10.41 [0.410] 14 8 x 5 PLACES 0.61 [0.024] 7.62 [0.300] 2.54 [0.100] All dimensions in mm(inches), Controlling dimension is mm. Tolerances (unless otherwise stated) ±0.10(0.004). Weight: 1.1g Recommended Footprint Details 7.62 [0.300] x5 PLACES 2.30 [0.091] 9.40 [0.370] RECOMMENDED ISOLATION BARRIER x5 PLACES 1.00 [0.039] www.murata-ps.com 2.54 [0.100] All enquiries: www.murata-ps.com/support KDC_NXE2.A01 Page 8 of 8 NXE2 Series Isolated 2W Single Output SM DC/DC Converters TAPE & REEL SPECIFICATIONS REEL OUTLINE DIMENSIONS REEL PACKAGING DETAILS Ø330 [13.000] MAX OR Ø177.8 [7.000] MAX [ +0.020 Ø13.0+0.5 -0.2 Ø0.512 -0.008 ] GOODS ENCLOSURE SECTION LEADER SECTION 400 [15.748] MIN 30.40 [1.197] MAX # TRAILER SECTION 160 [6.299] MIN 100 [3.937] MIN 1.50 [0.059] MIN ## Ø20.20 [Ø0.795] MIN Carrier tape pockets shown are illustrative only - Refer to carrier tape diagram for actual pocket details. Tape & Reel specifications shall conform with current EIA-481 standard Unless otherwise stated all dimensions in mm(inches) Controlling dimension is mm # Measured at hub ## Six equi-spaced slots on 180mm/7” reel Reel Quantity: 7” - 180 or 13” - 800 TAPE OUTLINE DIMENSIONS 1.75 [0.069] 4.0 [0.157] 2.0 [0.079] Ø1.5 [Ø0.059] MIN [ +0.004 +0.1 Ø1.5 -0.0 Ø0.059 -0.000 ] 3° MAX 11.5 [0.453] 13.3 [0.524]# 24.3 [0.957] MAX COVER TAPE 22.25 [0.876] MIN 11.0 [0.433]# 0.6 0.024 ] MAX ] 3° MAX 5.0 [0.197] 16.0 [0.630] DIRECTION OF UNREELING Tape & Reel specifications shall conform with current EIA-481 standard Unless otherwise stated all dimensions in mm(inches) ±0.1mm (±0.004 Inches) Controlling dimension is mm Components shall be orientated within the carrier tape as indicated # Measured on a plane 0.3mm above the bottom pocket Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED www.murata-ps.com/support 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. © 2016 Murata Power Solutions, Inc. All enquiries: www.murata-ps.com/support KDC_NXE2.A01 Page 9 of 8