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| WPN20 20W Regulated DC/DC Converter SELECTION GUIDE Order Code WPN20R12S05C WPN20R12S12C WPN20R12D12C WPN20R24S03C WPN20R24S05C WPN20R24S12C WPN20R24D12C WPN20R24D15C WPN20R48S05C WPN20R48S12C WPN20R48D12C WPN20R48D15C Input Voltage Nom. V 12 12 12 24 24 24 24 24 48 48 48 48 Output Voltage V 5.0 12.0 12.0 3.3 5.0 12.0 12.0 15.0 5.0 12.0 12.0 15.0 Output Current Min. Nom. A A 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.00 1.66 0.83 6.00 4.00 1.66 0.83 0.67 4.00 1.66 0.83 0.67 Input Current Efficiency Nom. Load A % 2.00 2.00 2.00 1.00 1.00 1.00 1.00 1.00 0.50 0.50 0.50 0.50 84 86 86 83 84 87 87 87 85 88 87 87 FEATURES RoHS compliant Operating temperature range: -40C to +100C Industry standard pinout Input and output filtering Low profile shell Single and dual outputs Output trim function INPUT CHARACTERISTICS Parameter Voltage range Reflected ripple current Undervoltage lockout threshold All WPN20R12 types All WPN20R24 types All WPN20R48 types 7 15.5 30 Conditions All WPN20R12 types All WPN20R24 types All WPN20R48 types Min. 9 18 33 Typ. 12 24 48 Max. 18 36 75 50 8.8 17 33 Units V mA p-p V DESCRIPTION The WPN20RC series is available in three input voltage ranges of 9-18V, 18-36V and 33-75V. The unit is housed in a space saving aluminum shell. The 300KHz switching frequency and forward converter topology provide excellent performance across all line and load conditions. Other features include: under voltage lock-out, internal temperature shutdown, soft start and over current protection. An output trim feature is provided, allowing the user to compensate for long line lengths. Applications include: Telecommunications, Battery Powered Sytems, Process Control Equipment, Transportation Equipment and Distributed Power Systems. The product range has been recognised by Underwriters Laboratory (UL) to UL 1950 for operational insulation, file number E179522 applies. OUTPUT CHARACTERISTICS Parameter Rated power Voltage setpoint accuracy Temperature coefficient Line regulation Load regulation Ripple & Noise Output voltage adjust range Conditions Min. Typ. Max. 20 1.5 0.005 0.1 0.5 0.5 2.0 100 100 Units W % %/C % % % % mVp-p mVp-p Singles Duals Singles Min load to Nom. load Duals Single outputs, BW = 5Hz to 20MHz Dual outputs, BW = 5Hz to 20MHz See attached plots High line to low line Continuous 60 50 Short circuit & overcurrent protection GENERAL CHARACTERISTICS Parameter Conditions Switching frequency Max capacitive load MTTF per ML-HDBK-217 Ground benign Min. Typ. 300 550 Max. Units kHz mF/A MHr Circuit stress method TA = +25 unmodified database 1.4 All specifications typical at TA=25C, 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: mk@murata-ps.com, tel: +44 (0)1908 615232 KDC_WPN20RC.C01 Page 1 of 4 WPN20 20W Regulated DC/DC Converter ISOLATION CHARACTERISTICS Parameter Rated voltage Test voltage Resistance Capacitance Conditions 60Hz, 10 seconds Min. 1500 1500 10 2400 Typ. Max. Units Vpk Vpk G pF TEMPERATURE CHARACTERISTICS Parameter Specification Operation Storage Thermal shutdown Conditions Case Case Case Min. -40 -40 -55 105 Typ. Max. +85 +85 +125 115 Units C C C C RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260C for 10 seconds. The pin termination finish on this product series is matte tin (100 microns min.) over nickel (40-80 microinches min.). The series is backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs THERMAL DERATING CURVE 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 WPN20 series of dc/dc converters are all 100% production tested at their stated isolation voltage. This is 1500 Vpk for 10 seconds. A question commonly asked is, "What is the continuous voltage that can be applied across the part in normal operation?" The WPN20 series has been recognized by Underwriters Laboratory, 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. While manufactured parts can 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. www.murata-ps.com Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232 KDC_WPN20RC.C01 Page 2 of 4 WPN20 20W Regulated DC/DC Converter PERFORMANCE GRAPHS 90 85 80 EFFICIENCY VS. OUTPUT LOAD Change in Efficiency (%) 15V 12V 5V 3V 10 EFFICIENCY VS. TEMPERATURE 5 100% Load Efficiency (%) 75 70 65 60 55 50 10 20 40 50 60 80 100 0 20% Load -5 -10 -40 -15 25 65 110 Output Load (% or Rated) 50%Load Tcase (C) 0.6 EFFICIENCY VS. INPUT VOLTAGE 10%Load 100%Load OUTPUT RIPPLE VS. INPUT VOLTAGE 1.4 Change in Efficiency (%) 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 LL Nom HL Normalized Output Ripple 1.2 1 0.8 0.6 Vin 0.4 LL Nom HL Vin 50 45 TRIM RESISTOR VS. OUTPUT VOLTAGE CHANGE 55 3 -trim +trim 1.2 OUTPUT RIPPLE VS. TEMPERATURE Normalized Output Ripple 40 Trim Resistor (K Ohms) 35 30 25 20 15 10 5 0 10 9 8 7 6 5 4 3 2 1 1 0.8 0.6 -40 -15 25 65 110 Percentage Change In Output Voltage Tcase (C) TRIM RESISTOR VS. OUTPUT VOLTAGE CHANGE 100 90 80 Trim Resistor (K Ohms) 70 60 50 40 30 20 10 0 10 9 8 7 6 5 4 3 12 15 15 +trim -trim trim 2 1 Percentage Change In Output Voltage www.murata-ps.com Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232 KDC_WPN20RC.C01 Page 3 of 4 WPN20 20W Regulated DC/DC Converter MECHANICAL DIMENSTIONS PIN SIDE DOWN SIDE VIEW 0.425 0.00 (10.80 0.08) 1.590 0.005 (40.39 0.13) WPN20RxxyzzC 0.040 0.002 (1.02 0.05) 0.015 0.003 (0.38 0.08) 5 0.150 (3.81) 1.990 0.005 (50.55 0.13) 1 2 6 7 8 PIN CONNECTIONS Function Pin Singles 1 2 5 6 7 8 +VIN -VIN NO PIN +VOUT -VOUT TRIM Duals +VIN -VIN +VOUT OV -VOUT TRIM PIN SIDE UP Weight: 32g 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). USA: Canada: UK: Mansfield (MA), Tel: (508) 339 3000, email: sales@murata-ps.com Toronto, Tel: (866) 740 1232, email: toronto@murata-ps.com Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 www.murata-ps.com email: sales@murata-ps.com ISO 9001 & ISO 14001 REGISTERED 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. (c) 2009 Murata Power Solutions, Inc. France: Japan: China: Germany: Munchen, Tel: +49 (0)89-544334-0, email: ped.munich@murata-ps.com Singapore: Parkway Centre, Tel: +65 6348 9096, email: singapore@murata-ps.com www.murata-ps.com Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232 KDC_WPN20RC.C01 Page 4 of 4 |
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