www.murata-ps.com WPN20 OBSOLETE 20W 0W Regulated DC/DC Converter SELECTION GUIDE Order Code Input Voltage Output Voltage Nom. V V WPN20R48S05C WPN20R12S05C WPN20R12S12C WPN20R12D12C WPN20R24S03C WPN20R24S05C WPN20R24S12C WPN20R24D12C WPN20R24D15C WPN20R48S12C WPN20R48D12C WPN20R48D15C FEATURES RoHS compliant Operating temperature range: -40ºC to +100ºC Output Current Min. Nom. A A Input Current Efficiency Nom. Load A % Recommeneded Alternative UWR-5/4000-D48A-C UWR-5/4000-D12A-C UWR-12/1650-D12A-C BWR-12/830-D12A-C UWR-3.3/4850-D12A-C UWR-5/4000-D12A-C UWR-12/1650-D12A-C BWR-12/830-D12A-C BWR-15/670-D12A-C UWR-12/1650-D48A-C BWR-12/830-D48A-C BWR-15/670-D48A-C Obsolete, recommended alternative: (click to view data sheets) INPUT CHARACTERISTICS Industry standard pinout Parameter Conditions Min. Typ. Max. Input and output filtering Voltage range All WPN20R12 types All WPN20R24 types All WPN20R48 types 9 18 33 12 24 48 mA p-p All WPN20R12 types All WPN20R24 types All WPN20R48 types 7 15.5 30 18 36 75 50 8.8 17 33 Typ. Max. Units 60 50 20 ±1.5 ±0.005 ±0.1 ±0.5 ±0.5 ±2.0 100 100 W % %/ºC % % % % mVp-p mVp-p Typ. Max. Units Low profile shell Single and dual outputs Output trim function DESCRIPTION Reflected ripple current Undervoltage lockout threshold Units V V OUTPUT CHARACTERISTICS 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. Parameter An output trim feature is provided, allowing the user to compensate for long line lengths. Ripple & Noise Applications include: Telecommunications, Battery Powered Sytems, Process Control Equipment, Transportation Equipment and Distributed Power Systems. Short circuit & overcurrent protection The product range has been recognised by Underwriters Laboratory (UL) to UL 1950 for operational insulation, file number E179522 applies. Conditions Min. Rated power Voltage setpoint accuracy Temperature coefficient Line regulation Load regulation Output voltage adjust range 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 GENERAL CHARACTERISTICS Parameter Conditions Switching frequency Max capacitive load MTTF per ML-HDBK-217 Ground benign Circuit stress method TA = +25º unmodified database Min. 300 550 kHz mF/A 1.4 MHr 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 KDC_WPN20RC.E01 Page 1 of 5 WPN20 20W Regulated DC/DC Converter ISOLATION CHARACTERISTICS Parameter Conditions Rated voltage Test voltage Resistance Capacitance Min. Typ. Max. 1500 1500 10 2400 60Hz, 10 seconds Units Vpk Vpk GΩ pF TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Specification Operation Storage Thermal shutdown Ambient (with no derating) Case (with no derating) -40 -40 -55 105 Case Typ. Max. Units +85 +100 +125 115 °C °C °C °C RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260ºC 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: [email protected], tel: +44 (0)1908 615232 KDC_WPN20RC.E01 Page 2 of 5 WPN20 20W Regulated DC/DC Converter APPLICATION NOTES OUTPUT VOLTAGE ADJUSTMENT The trim resistor equations are: Where: RDOWN = G - (VOUT x H) VOUT - VNOM* RUP = G - (VOUT x K) VOUT - VNOM* VNOM 3.3V 5V 12V 15V G 27604 8250 235050 362450 H 7500 1100 17800 2200 K 9280 2200 21700 26990 *Note: For 3.3V outputs, VNOM is 3.327V and for 15V outputs VNOM is 14.967V. TRIM UP SINGLE TRIM DOWN SINGLE +VIN +VOUT +VOUT +VIN RDOWN WPN20 TRIM WPN20 TRIM RUP -VOUT TRIM UP DUAL -VOUT TRIM DOWN DUAL +VIN +VOUT +VOUT +VIN RDOWN WPN20 TRIM WPN20 TRIM RUP Common -VOUT Common -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. FUSING The WPN20R Series of converters are not internally fused. In order to maintain maximum safety an input line fuse should always be included. A slow blow, UL listed, 8A fuse is recommended for all models. Remote on/off The WPN20R Series of converters are equipped with a primary on/off control pin for increased system flexibility. The input is TTL open-collector and/or CMOS open-drain compatible. The primary on/off pin uses positive logic, which turns the unit off when a logic low signal is applied (<0.7V). The figure below illustrates the typical external connections to enable this function. If no connection is made to the primary on/off control pin, the module will operate normally. www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 KDC_WPN20RC.E01 Page 3 of 5 WPN20 20W Regulated DC/DC Converter PERFORMANCE GRAPHS ()),&,(1&<96287387/2$' 15V 12V 5V 3V 85 (I¿FLHQF\ 80 75 70 65 60 55 50 10 20 40 50 60 80 ()),&,(1&<967(03(5$785( 10 &KDQJHLQ(I¿FLHQF\ 90 5 100% Load 20% Load 0 -5 -10 -40 100 -15 25 2XWSXW/RDGRU5DWHG 65 110 7FDVH& 50%Load ()),&,(1&<96,138792/7$*( 0.6 Change in Efficiency (%) 2873875,33/(96,138792/7$*( 10%Load 0.4 100%Load 1RUPDOL]HG2XWSXW5LSSOH 0.2 0 -0.2 -0.4 -0.6 -0.8 -1 LL Nom HL Vin 1 0.8 0.6 0.4 LL 5 5 3 -trim +trim Nom HL 2873875,33/(967(03(5$785( 1.2 45 1RUPDOL]HG2XWSXW5LSSOH 40 7ULP5HVLVWRU.2KPV 1.2 Vin 75,05(6,67259628738792/7$*(&+$1*( 50 1.4 35 30 25 20 15 10 5 1 0.8 0.6 -40 -15 25 65 110 0 10 9 8 7 6 5 4 3 2 1 3HUFHQWDJH&KDQJH,Q2XWSXW9ROWDJH 75,05(6,67259628738792/7$*(&+$1*( 100 7FDVH& 12 15 15 +trim -trim trim 90 7ULP5HVLVWRU.2KPV 80 70 60 50 40 30 20 10 0 10 9 8 7 6 5 4 3 2 1 3HUFHQWDJH&KDQJH,Q2XWSXW9ROWDJH www.murata-ps.com Technical enquiries email: [email protected], tel: +44 (0)1908 615232 KDC_WPN20RC.E01 Page 4 of 5 81/ 20W Regulated DC/DC Converter MECHANICAL DIMENSTIONS SIDE VIEW PIN SIDE DOWN 1.590 ± 0.005 (40.39 ± 0.13) 0.425 ± 0.00 (10.80 ± 0.08) WPN20RxxyzzC 0.150 (3.81) 0.040 ± 0.002 (1.02 ± 0.05) 0.015 ± 0.003 (0.38 ± 0.08) 5 1.990 ± 0.005 (50.55 ± 0.13) 6 1 2 7 4 PIN CONNECTIONS 8 Function Pin 1 Singles Duals +VIN +VIN 2 -VIN -VIN 4 Remote on/off Remote on/off 5 NO PIN +VOUT 6 +VOUT OV 7 -VOUT -VOUT 8 TRIM 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). Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED 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. © 2012 Murata Power Solutions, Inc. www.murata-ps.com/locations KDC_WPN20RC.E01 Page 5 of 5