MTU1 Series www.murata-ps.com Isolated 1W Single Output SM DC/DC Converters Single isolated output % 7.3 6.1 5.6 5.3 5.6 3.9 3.5 3.2 9 7.5 7.5 6.5 8 6 6 5 mVp-p 35 60 15 25 15 25 15 25 20 40 15 25 10 25 10 25 Efficiency (Min.) Input Current at Full Load mA % % pF kHrs 241 233 230 230 99 96 95 95 80 83 84 84 80 82 83 84 83 86 87 87 84 87 88 88 19 20 21 22 22 31 40 35 5664 5488 5186 4773 5641 5467 5165 4753 MTTF2 Ripple & Noise (Max.)3 Ripple & Noise (Typ.)3 200 111 83 67 200 111 83 67 Load Regulation (Max) mA 5 9 12 15 5 9 12 15 Load Regulation (Typ.) V 5 5 5 5 12 12 12 12 Isolation Capacitance Footprint over pins 0.69cm2 V Efficiency (Typ.) Patent Pending Output Voltage FEATURES MTU1S0505MC MTU1S0509MC MTU1S0512MC MTU1S0515MC MTU1S1205MC MTU1S1209MC MTU1S1212MC MTU1S1215MC Nominal Input Voltage Order Code1 Output Current SELECTION GUIDE 1kVDC Isolation Efficiency up to 88% (Typ.) MSL Level 1 INPUT CHARACTERISTICS Parameter Voltage range Power density 1.71W/cm3 Wide temperature performance at full 1 Watt load, –40°C to 85°C UL 94V-0 Package material 5V & 12V Input 5V, 9V, 12V & 15V output Toroidal magnetics Custom solutions available Multi-layer ceramic capacitors PRODUCT OVERVIEW The MTU1 series is a new range of miniature surface mount, high performance 1W DC/DC converters. With a footprint reduction of over 50% from the previous generation of 1W SMD DC/DC, the MTU1 series offers 1W of available output power over the full industrial temperature range of -40ºC to 85ºC. The MTU1 series is more efficient and offers improved regulation performance for applications where a wide output voltage variation can not be tolerated. The devices are suitable for all applications where high volume production is envisaged. Reflected ripple current Min. Typ. Max. Units 4.5 10.8 5.0 12.0 6 5 5.5 13.2 V Typ. Max. mA p-p ISOLATION CHARACTERISTICS Parameter Conditions Min. Isolation voltage Resistance Flash tested for 1 second Viso= 1000VDC 1000 10 Units VDC GΩ GENERAL CHARACTERISTICS Parameter Conditions Switching frequency 5V input types 12 input types Min. Typ. Max. 82 90 Units kHz ABSOLUTE MAXIMUM RATINGS Input voltage VIN, MTU1S05 types Input voltage VIN, MTU1S12 types 7V 15V OUTPUT CHARACTERISTICS Parameter Conditions Rated power TA=-40°C to 85°C See tolerance envelope High VIN to low VIN Voltage set point accuracy Line regulation Min. Typ. Max. Units 1.0 W 1.0 1.1 %/% Typ. Max. Units TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Specification Storage All output types -40 -55 Case temperature rise above ambient4 Cooling Conditions Continuous operation, 5V input types Continuous operation, 12V input types 5V input types 12V input types 85 125 °C 12 All types Free air convection 1. If components are required in tape and reel format suffix order code with -R, e.g. MTU10505MC-R. 2. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load. 3. See ripple & noise characterisation method. 4. Measured after 1 hour continuous operation at nominal VIN full load at the center of each PCB. 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 2011-02-01 KDC_MTU.A03 Page 1 of 6 MTU1 Series Isolated 1W 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 MTU1 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?” For a part holding no specific agency approvals, such as the MTU1 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 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 MTU1 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. TEMPERATURE DERATING GRAPH TOLERANCE ENVELOPES 5V output types 0 -40 Safe Operating Area 100 50 0 Ambient Temperature (°C) 150 1.5% VNOM 10 0% 25 50 75 Output Load Current (%) -4% 100 Output Voltage 85°C Output Voltage Output Power (W) 0.5 5% 5.5% 1.5 1.0 All other types 1% 0% VNOM 10 25 75 50 -4% 100 Output Load Current (%) 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. RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak reflow solder temperature of 245ºC as per J-STD-020D. The pin termination finish on this product series is Matte Tin over Nickel Preplate. The series is backward compatible with Sn/Pb soldering systems. The series has a Moisture Sensitivity Level (MSL) 1. Samples of the product series were tested in accordance with the conditioning described for MSL level 1 in IPS/JEDEC STD-020D. The product series passed electrical tests and visual inspection criteria. For further information, please visit: www.murata-ps.com/rohs 1. Measured on centre of input side PCB. www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2011-02-01 KDC_MTU.A03 Page 2 of 6 MTU1 Series Isolated 1W Single Output SM 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. MTU1S0505MC MTU1S0509MC MTU1S0512MC MTU1S0515MC MTU1S1205MC MTU1S1209MC MTU1S1212MC MTU1S1215MC Typical Start-Up Wave Form Start-up time ms 0.9 2.7 4.3 7.5 0.9 1.9 3.3 4.7 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 Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2011-02-01 KDC_MTU.A03 Page 3 of 6 MTU1 Series Isolated 1W Single Output SM 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 Inductor SMD L, μH MTU1S0505MC MTU1S0509MC MTU1S0512MC MTU1S0515MC MTU1S1205MC MTU1S1209MC MTU1S1212MC MTU1S1215MC Load C DC Through Hole Capacitor C, μF TBD EFFICIENCY VS LOAD MTU1S05xxMC MTUS12xxMC 90 90 80 80 15V 12V 9V 5V 60 50 70 Efficiency (%) Efficiency (%) 70 40 30 15V 12V 9V 5V 60 50 40 30 20 20 10 10 0 0 0 10 20 30 www.murata-ps.com 40 50 60 Load (%) 70 80 90 100 0 10 20 30 40 50 60 Load (%) 70 80 90 100 Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2011-02-01 KDC_MTU.A03 Page 4 of 6 MTU1 Series Isolated 1W Single Output SM DC/DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS - Patent Pending PIN CONNECTIONS 8.20 (0.323) 2.54 (0.100) 4 6 5 Function 1 +VIN 3 -VIN 4 +VOUT 5 OV 6 NC 3 1 1.56 (0.061) Pin 5.08 (0.200) 8.40±0.45 (0.331±0.018) +0.000 8.50 +0.00 -0.20 ( 0.335-0.008 ) S 0.35 (0.014) (Typ.) 0.25±0.1 (0.01) 0.60±0.1 (0.024) x5 PINS c 0.10 (0.004) S SEATING PLANE 1.80±0.2 (0.071) 1.80±0.2 (0.071) All dimensions in mm ±0.25mm (inches ±0.01). All pins on a 2.54 (0.1) pitch and within 0.25 (0.01) of true position. Weight: 0.75g TUBE OUTLINE DIMENSIONS RECOMMENDED FOOTPRINT DETAILS 6.50 (0.256) 12.25 (0.482) MAX 2.54 (0.100) 2.54 (0.100) 0.75±0.15 (0.030±0.006) 12.25 (0.482) MAX 1.00 (0.039) www.murata-ps.com 2.60 (0.102) Unless otherwise stated all dimensions in mm±0.25mm (inches). Tube length: 520mm ±2.00 Tube Quantity: 60 Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2011-02-01 KDC_MTU.A03 Page 5 of 6 MTU1 Series Isolated 1W Single Output SM DC/DC Converters TAPE & REEL SPECIFICATIONS REEL OUTLINE DIMENSIONS TAPE OUTLINE DIMENSIONS 330 (12.99) MAX 8.70±0.1 (0.343) 0.50±0.05 (0.020) DIRECTION OF UNREELING 100 Ø (3.94) MIN 2.00(+0.08) (AT HUB SECTION) 24.40 (0.96) -0.00 (0.00) +0.004 01.50 +0.10 -0.00 (00.059-0.000) 13.00±0.25 Ø (0.51±0.009) 30.40 (1.20) MAX 2.00±0.1 (0.079) 16.00±0.10 (0.630) 8.50±0.1 (0.335) 4.00±0.1 (0.157) 1.75±0.1 (0.069) 9.00±0.1 11.50±0.1 (0.453) 24.00±0.30 (0.945±0.012) REEL PACKAGING DETAILS XWWYY MTU1S 0509 XWWYY MTU1S 0509 XWWYY MTU1S 0509 TRAILER SECTION 160 (6.30) MIN GOODS ENCLOSURE SECTION CARRIER TAPE START 100 (3.94) MIN LEADER SECTION 400 (15.75) MIN Product Orientation Pin 1, located nearest to carrier drive sprocket. Reel Quantity: 300 pcs. Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED www.murata-ps.com/locations 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. © 2011 Murata Power Solutions, Inc. Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2011-02-01 KDC_MTU.A03 Page 6 of 6