NML1212SC

NML Series www.murata.com Isolated 2W Single Output DC-DC Converters SELECTION GUIDE Order Code FEATURES „ UL 60950 recognised Nominal Input Voltage V Output Voltage Output Current V mA Input Current Efficiency Isolation at Rated mA % pF MTTF1 Recommended Alternative kHrs NML0505SC NML0509SC NML0512SC NML0515SC NML1205SC NML1212SC 5 5 5 5 12 12 5 9 12 15 5 12 400 222 167 133 400 167 513 492 479 481 207 197 78 81 84 83 81 85 19 27 32 27 28 46 2327 1393 832 481 716 461 NML1209SC NML1215SC 12 12 9 15 222 133 198 197 84 85 42 54 593 328 Contact Murata Contact Murata Conditions Min. Typ. Max. Units Continuous operation, 5V input types Continuous operation, 12V input types 5V input types 12V input types 4.5 10.8 5.0 12.0 33 38 5.5 13.2 V Typ. Max. Units 2.0 W 1.2 8.5 5.2 5.5 8.5 %/% 200 mV p-p Max. Units „ Single isolated output „ 1kVDC isolation ‘Hi Pot Test’ „ Efficiency up to 85% „ Wide temperature performance at full 2 watt load, –40°C to 85°C INPUT CHARACTERISTICS Parameter „ Industry standard pinout Voltage range „ 5V & 12V inputs Reflected ripple current „ 5V, 9V, 12V & 15V outputs „ Internal SMD construction OUTPUT CHARACTERISTICS „ No external components required Parameter Conditions „ Custom solutions available Rated Power Voltage Set Point Accuracy Line regulation „ Pin compatible with CME, CRE1, CRL2, LME, MEE1, NKE & NME series Load Regulation2 TA=-40°C to 85°C See tolerance envelope High VIN to low VIN 10% load to rated load, 5V output types 10% load to rated load, 9V output types 10% load to rated load, 12V output types 10% load to rated load, 15V output types NML0505SC, BW=DC to 20MHz NML0509SC, BW=DC to 20MHz NML0512SC, BW=DC to 20MHz NML0515SC, BW=DC to 20MHz NML1205SC, BW=DC to 20MHz NML1209SC, BW=DC to 20MHz NML1212SC, BW=DC to 20MHz NML1215SC, BW=DC to 20MHz „ MTTF up to 2.3 million hours „ No electrolytic or tantalum capacitors DESCRIPTION The NML series of DC-DC Converters is particularly suited to isolating and/or converting DC power rails. The galvanic isolation allows the device to be configured to provide an isolated negative rail in systems where only positive rails exist. The wide temperature range guarantees startup from –40°C and full 2 watt output at 85°C. Ripple and Noise Min. 1.0 7.0 4.5 4.5 3.7 96 67 59 53 76 63 53 45 mA p-p % ISOLATION CHARACTERISTICS Parameter Conditions Min. Isolation test voltage Resistance Flash tested for 1 second Viso= 500VDC 1000 10 Typ. VDC GΩ GENERAL CHARACTERISTICS For full details go to https://www.murata.com/englobal/products/power/rohs Parameter Conditions Switching frequency 5V input types 12V input types Min. Typ. 90 90 Max. Units kHz 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. www.murata.com KDC_NML.I01 Page 1 of 8 NML Series Isolated 2W Single Output DC-DC Converters TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Specification Storage All output types -40 -50 Case Temperature above ambient Cooling 5V output types All other output types Free air convection Typ. Max. Units 85 130 45 36 °C ABSOLUTE MAXIMUM RATINGS Lead temperature 1.5mm from case for 10 seconds Wave Solder Input voltage VIN, NML05 types Input voltage VIN, NML12 types 260°C Wave Solder profile not to exceed the profile recommended in IEC 61760-1 Section 6.1.3. Please refer to application notes for further information. 7V 15V www.murata.com KDC_NML.I01 Page 2 of 8 NML Series Isolated 2W Single Output 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 NML 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 NML series has been recognised 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 NML series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enamelled 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 recognised 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 NML 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 100ºC as measured at any point on the case of the unit (hotspot). The NML series of converters are not internally fused so to meet the requirements of UL 60950 an anti-surge input line fuse should always be used with ratings as defined below. NML05xxSC: 0.8A NML12xxSC: 0.315A All fuses should be UL recognised and rated to 125V. File number E151252 applies. RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260°C for 10 seconds. Please refer to application notes for further information. The pin termination finish on this product series is Tin Plate, Hot Dipped over Matte Tin with Nickel replate. The series is backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs PART NUMBER STRUCTURE NML XX XX S C Series name RoHS compliant Input voltage Package type Output voltage S - SIP D - DIP M - Surface mount Z - ZIP www.murata.com KDC_NML.I01 Page 3 of 8 NML Series Isolated 2W Single Output DC-DC Converters 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 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. C2 Differential Mode Noise Test Schematic DC/DC Converter OSCILLOSCOPE C1 C2 C3 + SUPPLY Input - + R1 T1 R2 Y INPUT Output - R LOAD 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. NML0505SC NML0509SC NML0512SC NML0515SC NML1205SC NML1209SC NML1212SC NML1215SC Start-up time μs 790 1154 2265 2998 396 880 1156 2394 Typical Start-Up Wave Form www.murata.com KDC_NML.I01 Page 4 of 8 NML Series Isolated 2W 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 20MHz. L DC Power Source NML0505SC NML0509SC NML0512SC NML0515SC NML1205SC NML1209SC NML1212SC NML1215SC L, μH 22 47 47 68 22 47 47 68 Inductor SMD 82223 82473 82473 82683 82223 82473 82473 82683 C Load DC Through Hole 11R223C 11R473C 11R473C 11R683C 11R223C 11R473C 11R473C 11R683C Capacitor C, μF 2.2uF 1uF 2.2uF 3.3uF 2.2uF 1uF 2.2uF 3.3uF www.murata.com KDC_NML.I01 Page 5 of 8 NML Series Isolated 2W Single Output DC-DC Converters TOLERANCE ENVELOPE 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. All variants 10% Typica l Output Voltage 5% Load L ine 2.5% 0% -2.5% -7.5% 10 25 50 75 Output Load Current (%) 100 TEMPERATURE DERATING GRAPH Output Power (W) 3 2 1 0 -40 85°C Safe Operating Area 100 50 0 Ambient Temperature (°C) 150 www.murata.com KDC_NML.I01 Page 6 of 8 NML Series Isolated 2W Single Output DC-DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS - 4 PIN SIP SIP Package Pin Function 1 2 3 4 -VIN +VIN -VOUT +VOUT 14.00±0.15 [0.551±0.006] 10.00±0.25 [0.394±0.010] 4.10±0.5 [0.161±0.020] 0.40 [0.016] MIN TUBE OUTLINE DIMENSIONS NML 0505SC XYYWW 1 2 3 S 4 12.43 [0.489] 2.54 [0.100] (3.44 [0.135]) 9.3 [0.366] 18.0 [0.709] 0.50±0.05 [0.020±0.002] 0.25±0.05 [0.010±0.002] (1.13 [0.044]) 7.50±0.25 [0.295±0.010] 5.0 [0.197] Weight: 2.0g All dimensions in mm (inches). Controlling dimension is mm. All pins on a 2.54 (0.100) pitch and within ±0.1 (0.004) of true position from pin 1 at seating plane ‘S’ Unless otherwise specified all dimensions in mm [inches] ±0.55mm [0.022]. Tube Length : 520mm [20.472] ±2.0 [0.079]. Tube Quantity : 35 RECOMMENDED FOOTPRINT DETAILS 2.54 [0.100] x4 HOLES Ø 0.045 0.039 Ø 1.15 1.00 [ ] 2.54 [0.100] Unless otherwise stated all dimensions in mm (inches) ±0.5mm. www.murata.com KDC_NML.I01 Page 7 of 8 NML Series Isolated 2W Single Output DC-DC Converters DISCLAIMER Unless otherwise stated in the datasheet, all products are designed for standard commercial and industrial applications and NOT for safety-critical and/or life-critical applications. Particularly for safety-critical and/or life-critical applications, i.e. applications that may directly endanger or cause the loss of life, inflict bodily harm and/or loss or severe damage to equipment/property, and severely harm the environment, a prior explicit written approval from Murata is strictly required. Any use of Murata standard products for any safety-critical, life-critical or any related applications without any prior explicit written approval from Murata shall be deemed unauthorised use. These applications include but are not limited to: • Aircraft equipment • Aerospace equipment • Undersea equipment • Power plant control equipment • Medical equipment • Transportation equipment ( automobiles, trains, ships, etc.) • Traffic signal equipment • Disaster prevention / crime prevention equipment • Data Processing equipment Murata makes no express or implied warranty, representation, or guarantee of suitability, fitness for any particular use/purpose and/or compatibility with any application or device of the buyer, nor does Murata assume any liability whatsoever arising out of unauthorised use of any Murata product for the application of the buyer. The suitability, fitness for any particular use/purpose and/or compatibility of Murata product with any application or device of the buyer remain to be the responsibility and liability of the buyer. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards that anticipate dangerous consequences of failures, monitor failures and their consequences, lessen the likelihood of failures that might cause harm, and take appropriate remedial actions. Buyer will fully indemnify and hold Murata, its affiliated companies, and its representatives harmless against any damages arising out of unauthorised use of any Murata products in any safety-critical and/ or life-critical applications. Remark: Murata in this section refers to Murata Manufacturing Company and its affiliated companies worldwide including, but not limited to, Murata Power Solutions. This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: https://www.murata.com/en-eu/products/power/requirements Murata Power Solutions (Milton Keynes) Ltd. 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. © 2022 Murata Power Solutions (Milton Keynes) Ltd. www.murata.com KDC_NML.I01 Page 8 of 8