TE OBSOLE www.murata-ps.com NPX20 Series Isolated 20W Single Output DC/DC Converters SELECTION GUIDE SELECT Order Code FEATURES RoHS compliant Under voltage lock out Synchronous rectifier technology Full 6 Amp output current Remote on/off & output trim Minimum 76% efficiency at 1.8V Over voltage, current & temperature protection NPX20S24018DC1 NPX20S24018MC NPX20S24018PMC NPX20S24025DC1 NPX20S24025MC NPX20S24025PMC NPX20S24033DC1 NPX20S24033MC NPX20S24033PMC NPX20S48018DC1 NPX20S48018MC NPX20S48018PMC NPX20S48025DC1 NPX20S48025MC NPX20S48025PMC NPX20S48033DC1 NPX20S48033MC NPX20S48033PMC Parameter UL 60950 recognised Voltage range3 Under voltage lock out The NPX20 series of open frame DC/DC converters is available in three industry standard footprints, two surface mount land patterns and a through hole DIP footprint. Planar magnetic and synchronous-rectifier design offer efficiencies from 76% at 1.8V. The series offers features including no load operation, input undervoltage shutdown, over current protection, short-circuit protection, and thermal shutdown. Standard variants include output voltage adjustment and remote on/off control. The product has been recognized by Underwriters Laboratory (UL) to UL 60950 for basic insulation, file number E179522 applies. Input standby current Power consumption Reflected ripple current Parameter Voltage set point error Overall voltage envelope Line regulation Load regulation Ripple & noise2 Transient response Start delay Conditions Continuous operation 24V I/P types Continuous operation 48V I/P types Turn On Threshold NPX20S24XXXC Turn Off Threshold NPX20S24XXXC Turn On Threshold NPX20S48XXXC Turn Off Threshold NPX20S48XXXC www.murata-ps.com UWR-2-5/6000-D24ACT-C NPH25S2403EIC UWR-1-8/6000-D48ACT-C UWR-2-5/6000-D48ACT-C NPH25S4803EIC Min. Typ. Max. 18 36 16 11 30 25 24 48 17 16 32 32 1.4 36 75 18 16.5 35 34.5 Zero load For measurement method see page 3 1.0 40 Conditions Min. Substrate temperature -40°C to +85°C -2.0 -3.0 Typ. 2.0 BW = 0 to 20MHz with 1μF ceramic & 10μF tantalum capacitors NPX20SXX018 All other types Peak deviation (50-100% & 100-50% swing) Settling time (within 1% VOUT NOM) From remote on/off NPX20S24XXXC From remote on/off NPX20S48XXXC From application of VIN NPX20S24XXXC From application of VIN NPX20S48XXXC -5.0 -10.0 Overcurrent protection Overvoltage protection For full details go to www.murata-ps.com/rohs UWR-1-8/6000-D24ACT-C Units V V mA W mA p-p OUTPUT CHARACTERISTICS Voltage trim range Recommended Alternatives (click for data sheet) INPUT CHARACTERISTICS Operation to zero load DESCRIPTION Input Voltage Output Output Output Power Efficiency Package (Nom.) Voltage Current Max. Min. Style V V A W % 24 1.8 6.0 10.8 76 3 24 1.8 6.0 10.8 76 1 24 1.8 6.0 10.8 76 2 24 2.5 6.0 15.0 80 3 24 2.5 6.0 15.0 80 1 24 2.5 6.0 15.0 80 2 24 3.3 6.0 19.8 83 3 24 3.3 6.0 19.8 84 1 24 3.3 6.0 19.8 84 2 48 1.8 6.0 10.8 78 3 48 1.8 6.0 10.8 78 1 48 1.8 6.0 10.8 78 2 48 2.5 6.0 15.0 81 3 48 2.5 6.0 15.0 81 1 48 2.5 6.0 15.0 81 2 48 3.3 6.0 19.8 84 3 48 3.3 6.0 19.8 84 1 48 3.3 6.0 19.8 84 2 Max. Units +2.0 +3.0 5.0 20.0 %VOUT %VOUT mV mV 100 mV p-p +10.0 +10.0 %VOUT 10 600 5.0 5.0 300 800 110 %VOUT μs ms 140 %IOUT %VOUT 1. A four pin version D4C is also available, please refer to mechanical dimensions, package style 3. 2. A minimum load of 5% may be required to meet ripple and noise speculation with +VIN <24V. 3. A 33μF low ESR capacitor, specified as C3 in the recommended EMC filter on page 2, must be connected to the input of the NPX20 to ensure that the part is supplied by a low impedance source. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2010/02/08 KDC_NPX20C.I01 Page 1 of 8 NPX20 Series Isolated 20W Single Output DC/DC Converters GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Switching frequency Max. 350 Units kHz Module on (open collector input) Remote on/off 0.5 Module off MTTF -1.0 487000 000 MIL HDBK 217F TE OBSOLE ABSOLUTE MAXIMUM RATINGS Input voltage, 24V input types1 Input voltage, 48V input types1 Output voltage Output trim control Remote On/Off V mA kHrs 40V 80V -0.5V / +VOUT -0.5V / +VOUT 0.5V ISOLATION CHARACTERISTICS Parameter Conditions Min. Isolation test voltage Resistance Capacitance Flash tested for 1 second VISO = 500VDC 1500 1 Typ. Max. Units VDC GΩ pF 65 ENVIRONMENTAL CHARACTERISTICS Parameter Conditions Min. Substrate temperature Storage Thermal protection Full load Absolute Max. internal temperature Operates at substrate temperature -40 -40 Typ. 100 Max. Units 85 125 °C °C °C EMC FILTERING AND SPECTRA EMC FILTER AND VALUES $ $ $ $ %$ %$ $ $ C1 4.7μF 100V Polyester capacitor C2 4.7nF 250 VAC Y rated C3 33μF ESR <0.7 Ω 100V Electrolytic capacitor Recommended EMC filter should reduce conducted emissions below EN 55022 curve B Quasi-peak average limit. 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 NPX20 series of dc/dc converters are all 100% production tested at their stated isolation voltage. This is 1500V DC for 1 second. A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?” The NPX20S series has been recognized by Underwriters Laboratory to UL 60950 Basic Insulation class, and may be used as part of safety isolation scheme, provided that the output is maintained within SELV limits and the input is connected to a TNV or SELV supply. The isolation test voltage represents a measure of immunity to transient voltages. The part can be expected to function 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 requriements. REPEATED HIGH-VOLTAGE ISOLATION TESTING It is well known that repeated high-voltage testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. While manufactured parts can withstand several times the stated test voltage, any material is susceptible to eventual degradation when subjected to very high applied voltages, thus implying that the number of tests should be strictly limited. We therefore strongly advise against repeated high voltage testing, but if it is absolutely requried, that the voltage be reduced by 20% from the specified test voltage. 1. Absolute maximum value for 30 seconds. Prolonged operation may damage the product. www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2010/02/08 KDC_NPX20C.I01 Page 2 of 8 NPX20 Series Isolated 20W Single Output DC/DC Converters APPLICATION NOTES OUTPUT VOLTAGE ADJUSTMENT The trim resistor equations are: Where: RDOWN = (VOUT - L) x G - H VNOM - VOUT RUP = GxL VOUT - L - K VNOM 1.8 2.5 3.3 G 5100 00 5100 5100 H 2000 2000 2000 L 1.224 24 1.224 1.224 K 00.576 57 1.276 2.076 TE OBSOLE -H TRIM UP TRIM DOWN +VIN +VOUT +VOUT +VIN RDOWN NPX20S TRIM NPX20S TRIM RUP -VOUT -VOUT When the output voltage is trimmed up, output current must be derated so that the maximum output power (shown in the selection table) is not exceeded. INPUT REFLECTED RIPPLE CURRENT Input reflected ripple current is measured with the following components connected to the power supply and across the input of the NPX20 DC/DC converter. A 33μF low ESR (<0.7Ω) capacitor is connected across the input of the NPX. A large bulk capacitor 220μF (<100mΩ) is connected across the power supply, followed by a series filter inductor of 12μH measured using current probe, scale 1mV/mA. TYPICAL INPUT REFLECTED RIPPLE CURRENT VIN = 24V TYPICAL INPUT REFLECTED RIPPLE CURRENT VIN = 48V RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak reflow solder temperature of 245ºC. The pin termination finish on this product series is Matte Tin over Nickel Preplate. The series is backward compatible with Sn/Pb soldering systems. This series has a Moisture Sensitivity Level (MSL) 1. For further information, please visit www.murata-ps.com/rohs www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2010/02/08 KDC_NPX20C.I01 Page 3 of 8 NPX20 Series Isolated 20W Single Output DC/DC Converters CHARACTERISITCS CURVES – NPX20S24018 EFFICIENCY VS OUTPUT CURRENT OUTPUT RIPPLE & NOISE TE OBSOLE TYPICAL TRANSIENT RESPONSE THERMAL DERATING Output load change: 50-100% & 100-50% CHARACTERISITCS CURVES – NPX20S24025 EFFICIENCY VS OUTPUT CURRENT OUTPUT RIPPLE & NOISE TYPICAL TRANSIENT RESPONSE THERMAL DERATING Output load change: 100-50% & 50-100% www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2010/02/08 KDC_NPX20C.I01 Page 4 of 8 NPX20 Series Isolated 20W Single Output DC/DC Converters CHARACTERISITCS CURVES – NPX20S24033 EFFICIENCY VS OUTPUT CURRENT OUTPUT RIPPLE & NOISE TE OBSOLE TYPICAL TRANSIENT RESPONSE THERMAL DERATING Output load change: 50-100% & 100-50% CHARACTERISITCS CURVES – NPX20S48018 EFFICIENCY VS OUTPUT CURRENT OUTPUT RIPPLE & NOISE TYPICAL TRANSIENT RESPONSE THERMAL DERATING Output load change: 50-100% & 100-50% www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2010/02/08 KDC_NPX20C.I01 Page 5 of 8 NPX20 Series Isolated 20W Single Output DC/DC Converters CHARACTERISITCS CURVES – NPX20S48025 EFFICIENCY VS OUTPUT CURRENT OUTPUT RIPPLE & NOISE DED N E M M CO NOT RE GNS I S E D W FOR NE TYPICAL TRANSIENT RESPONSE THERMAL DERATING Output load change: 50-100% & 100-50% CHARACTERISITCS CURVES – NPX20S48033 EFFICIENCY VS OUTPUT CURRENT OUTPUT RIPPLE & NOISE TYPICAL TRANSIENT RESPONSE THERMAL DERATING Output load change: 50-100% & 100-50% www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2010/02/08 KDC_NPX20C.I01 Page 6 of 8 NPX20 Series Isolated 20W Single Output DC/DC Converters MECHANICAL DIMENSIONS SURFACE MOUNT “M” PACKAGE STYLE 1 (BOTTOM VIEW) 0.347 (8.81) 0.197 (5.00) 0.197 (5.00) 0.197 (5.00) 0.220 (5.59) 0.637 (16.18) 1 2 3 4 1.010 0.910 (25.65) (23.11) DED N E M M CO NOT RE GNS I S E D W FOR NE 5 6 00.05 05 (1.27) 0.062 (1.58) .58) 10 9 0.220 (5.59) PIN CONNECTIONS 8 7 0.197 (5.00) 0.197 (5.00) 0.091 (2.30) 2.015 (51.18) 0.334 (8.50) Pin Function 1 +VOUT 2 -VOUT 3 No Connection 4 Trim 5 No Connection 6 No Connection 7 No Connection 8 On/Off 9 -VIN 10 +VIN 0.063 (1.60) Weight 14.2g SURFACE MOUNT “PM” PACKAGE STYLE 2 (BOTTOM VIEW) 0.197 (5.00) 0.197 (5.00) 0.17 (4.32) PIN CONNECTIONS 0.17 (4.32) 1 2 3 4 0.055 (1.397) 1.165 1.055 (29.59) (26.80) 0.062 (1.58) 8 0.17 (4.32) 6 7 5 0.197 (5.00) 0.197 (5.00) 0.091 (2.30) 1.915 (48.64) 0.334 (8.50) Weight 14.5g Pin Function 1 +VOUT 2 -VOUT 3 Trim 4 No Connection 5 No Connection 6 On/Off 7 -VIN 8 +VIN 0.063 (1.60) Unless otherwise stated all dimensions are in inches (mm) ±0.01 (0.25). www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2010/02/08 KDC_NPX20C.I01 Page 7 of 8 NPX20 Series Isolated 20W Single Output DC/DC Converters MECHANICAL DIMENSTIONS (continued) THROUGH HOLE PACKAGE STYLE 3 (BOTTOM VIEW) +VOUT 1.004 (25.65) * 0.2 (5.08) 0.2 (5.08) On/Off +VIN -VIN 0.80 (20.32) *TE OBSOLE Trim 0.399 (10.01) -VVOUT 00.607 607 (15.43) 0.2 (5.08) (5.0 0.105 (2.67) 0.8 (20.32) 2.015 (51.18) 0.364 (9.25) 0.161 (4.1) Ø 0.04 (1.04) 0.04 (0.90) Weight: 13.9g All pins on a 0.1 (2.54) pitch and within ±0.01 (0.25) of true position. Unless otherwise stated all dimensions are in inches (mm) ±0.01 (0.25). * Pins not fitted on D4C, four pinout version. TRAY DIMENSIONS Quantity: 10 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. © 2009 Murata Power Solutions, Inc. Technical enquiries email: [email protected], tel: +44 (0)1908 615232 2010/02/08 KDC_NPX20C.I01 Page 8 of 8