BWR Models www.murata-ps.com 15-20W, Dual Output DC/DC Converters FEATURES PRODUCT OVERVIEW Low cost! Highly reliable! Proven SMT-on-pcb construction For your mid-range power requirements, it’s hard to beat the combination of low cost, proven reliability and outstanding electrical performance offered by the 15-20W, dual-output models of MPS’s new A-Series DC/DC converters. These highly efficient, rugged converters combine straightforward circuit topologies, the newest components, proven SMT-onpcb construction methods, and highly repeatable automatic-assembly techniques. Their superior durability is substantiated by a rigorous in-house qualification program that includes HALT (Highly Accelerated Life Testing). The ultra-wide input voltage ranges of the A-Series duals (4.7-7.5V for "D5A" models, 9-36V for "D12A" models and 18-75V for "D48A" models) make them excellent candidates for batterypowered systems or for distributed power architectures. Their ±5, ±12 or ±15 Volt outputs cover virtually all standard applications. These popular power converters are fully isolated (1500Vdc guaranteed) and display excellent line and load regulation (with specs as low as ±0.3% max. for line and ±0.5% max. for load). They are completely I/O protected (input overvoltage shutdown and reverse-polarity protection, output current limiting and overvoltage protection) and contain input (pi type) and output filtering to reduce noise. They require no external components and offer true "plug-and-play" convenience. These extremely reliable, cost-effective power converters are housed in standard 2" x 2" x 0.45" metal packages coated with electrically non-conductive materials. They offer industry-standard pinouts and are ideally suited for high-volume computer, telecom/datacom, instrumentation and ATE applications. Qual tested; HALT tested; EMC tested Designed to meet UL/ EN60950-1, BASIC insulation (48VIN models) mark available (48VIN models) Output voltages: ±5, ±12 or ±15 Volts Ultra-wide input voltage ranges: 4.7-7.5V, 9-36V or 18-75V Small packages, 2" x 2" x 0.45" Industry-standard pinouts Fully isolated, 1500Vdc guaranteed Guaranteed efficiencies to 82% –40 to +100°C operating temperature Modifications and customs for OEM’s +VIN (1) +VOUT (5) COMMON (6) –VOUT (7) –VIN (2) ON/OFF CONTROL (4) PWM CONTROLLER OPTO ISOLATION REFERENCE & ERROR AMP TRIM (8) Typical topology is shown. Figure 1. Simplified Schematic For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_BWR15_20_B05 Page 1 of 6 BWR Models 15-20W, Dual Output DC/DC Converters Performance Specifications and Ordering Guide ➀ Output Input R/N (mVp-p) ➁ Regulation (Max.) Load ➂ IIN ➃ (mA) Min. Typ. ±1.0% 5 4.7-7.5 75/3750 79% 80% C4, P7 ±0.3% ±0.5% 24 9-36 15/753 80.5% 83% C4, P7 100 ±0.3% ±0.5% 48 18-75 15/377 81% 83% C4, P7 120 ±0.5% ±1.0% 5 4.7-7.5 75/3750 79% 81% C4, P7 75 100 ±0.3% ±0.5% 24 9-36 30/1000 81.5% 83% C4, P7 ±830 75 100 ±0.4% ±0.5% 48 18-75 15/510 81% 83% C4, P7 ±500 75 150 ±0.5% ±1.0% 5 4.7-7.5 75/3659 80% 82% C4, P7 ±15 ±670 75 100 ±0.3% ±0.5% 24 9-36 30/979 82% 83% C4, P7 ±15 ±670 75 100 ±0.3% ±0.5% 48 18-75 15/484 82% 84% C4, P7 Typ. Max. Line BWR-5/1500-D5A ±5 ±1500 50 100 ±0.5% BWR-5/1700-D12A ±5 ±1700 75 100 BWR-5/1700-D48A ±5 ±1700 75 BWR-12/625-D5A ±12 ±625 75 BWR-12/830-D12A ±12 ±830 BWR-12/830-D48A ±12 BWR-15/500-D5A ±15 BWR-15/670-D12A BWR-15/670-D48A ➀ ➁ ➂ ➃ Package (Case, Pinout) Range (Volts) IOUT (mA) Model Efficiency VIN Nom. (Volts) VOUT (Volts) Typical at TA = +25°C under nominal line voltage and full-load conditions unless otherwise noted. Ripple/Noise (R/N) measured over a 20MHz bandwidth. Balanced loads, 20% to 100% load. Nominal line voltage, no-load/full-load conditions. M E C H A N I C A L S P E C I F I C AT I O N S PA R T N U M B E R S T R U C T U R E 2.00 (50.80) B WR - 12 / 830 - D48 A - C Output Configuration: B = Bipolar A-Series High Reliability Input Voltage Range: D5 = 4.7-7.5 Volts (5V nominal) D12 = 9-36 Volts (24V nominal) D48 = 18-75 Volts (48V nominal) Wide Range Input Nominal Output Voltages: ±5, ±12 or ±15 Volts ME T A L C A S E 0.45 (11.43) RoHS-6 Hazardous Substance Compliant* IN S U LA T E D B A S E Case C4 0.20 MIN (5.08) Maximum Output Current in mA from each output 0.040 ±0.002 D IA . (1.016 ±0.051) 1.800 (45.72) 0.10 (2.54) 5 0.200 (5.08) * Contact Murata Power Solutions for availability 6 1 2 T E M P E R AT U R E D E R AT I N G 7 0.400 (10.16) 1.200 (30.48) 3 E Q . SP. @ 0.400 ( 10.16) 2.00 (50.80) 4 20 8 19 A 18 0.100 (2.54) B 17 B O T T O M V IE W 16 C 15 Output Power (Watts) 0.40 (10.16) 14 I/O Connections 13 Pin 1 2 3 4 5 6 7 8 12 11 10 BWR-5/1500-D5A BWR-5/1700-D12A BWR-5/1700-D48A BWR-12/625-D5A BWR-12/830-D12A BWR-12/830-D48A BWR-15/500-D5A BWR-15/670-D12A BWR-15/670-D48A 9 8 7 6 5 4 3 C B B C A A C A A Function P7 +Input –Input No Pin On/Off Control +Output Common –Output Trim Dimensions are in inches (mm) shown for ref. only. Third Angle Projection Tolerances (unless otherwise specified): .XX ± 0.02 (0.5) .XXX ± 0.010 (0.25) Angles ± 2˚ Components are shown for reference only. 2 Notes: 1 0 –40 0 40 45 50 55 60 65 70 75 Ambient Temperature (°C) 80 85 90 95 100 For "D5A" and "D12A" models, the case is connected to pin 2 (–VIN). For "D48A" models, the case is connected to pin 1 (+VIN). www.murata-ps.com/support MDC_BWR15_20_B05 Page 2 of 6 BWR Models 15-20W, Dual Output DC/DC Converters Performance/Functional Specifications Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted. ➀ Input Absolute Maximum Ratings Input Voltage Range: D5A Models D12A Models D48A Models 4.7-7.5 Volts (5V nominal) 9-36 Volts (24V nominal) 18-75 Volts (48V nominal) Input Current See Ordering Guide Input Filter Type ➁ Pi Overvoltage Shutdown: D5A Models D12A Models D48A Models 10 Volts 40 Volts 80 Volts Output Overvoltage Protection ±5V Outputs ±12V Outputs ±15V Outputs Reverse-Polarity Protection Yes (Instantaneous, 10A maximum) Output Current On/Off (Sync.) Control (Pin 4) ➂ TTL high = off, low (or open) = on Output VOUT Accuracy (50% load): ±5V Outputs ±9/12/15V Outputs ±1.5%, maximum ±1%, maximum Temperature Coefficient ±0.02% per °C Ripple/Noise (20MHz BW) ➁ See Ordering Guide Line/Load Regulation See Ordering Guide Efficiency See Ordering Guide Isolation Voltage ➃ 1500Vdc, minimum Isolation Capacitance 550pF Current Limiting Auto-recovery Overvoltage Protection Zener/transorb clamps, magnetic feedback Dynamic Characteristics Transient Response (50% load step) 270µsec max. to ±1.5% of final value Switching Frequency 165kHz (±15kHz) Environmental Operating Temperature (ambient): Without Derating With Derating –40 to +50/55/60°C (Model dependent) to +100°C (See Derating Curves) Storage Temperature –40 to +105°C Flammability UL 94V-0 Physical Dimensions 2" x 2" x 0.45" (51 x 51 x 11.4mm) Shielding 5-sided Case Connection: D5A and D12A Models D48A Models Pin 2 (–VIN) Pin 1 (+VIN) Case Material Corrosion resistant steel with non-conductive, epoxy-based, black enamel finish and plastic baseplate Pin Material Gold-plated copper alloy Weight 2.7 ounces (75.6 grams) ➀ These converters require a minimum 20% loading on each output to maintain specified regulation. Operation under no-load conditions will not damage these devices; however they may not meet all listed specifications. ➁ Application-specific internal input/output filtering can be recommended and perhaps added internally upon request. Contact MPS Applications Engineering for details. ➂ Applying a voltage to the Control pin when no input power is applied to the converter can cause permanent damage to the converter. ➃ "D48A" models have BASIC, "D5A" and "D12A" models have Functional insulation. Devices can be screened or modified for higher guaranteed isolation voltages. Contact MPS Applications Engineering for details. Input Voltage: D5A Models D12A Models D48A Models Input Reverse-Polarity Protection 12 Volts 44 Volts 88 Volts Current must be <10A. Brief duration only. Fusing recommended. 6.8 Volts, limited duration 15 Volts, limited duration 18 Volts, limited duration Current limited. Max. current and short-circuit duration are model dependent. Storage Temperature –40 to +105°C Lead Temperature See soldering guidelines These are stress ratings. Exposure of devices to greater than any of these conditions may adversely affect long-term reliability. Proper operation under conditions other than those listed in the Performance/Functional Specifications Table is not implied. TECHNICAL NOTES Floating Outputs Since these are isolated DC/DC converters, their outputs are "floating." Any BWR model may be configured to produce an output of 10V, 24V or 30V (for ±5V, ±12V or ±15V models, respectively) by applying the load across the +Output and –Output pins (pins 5 and 7), with either output grounded. The Common pin (pin 6) should be left open. Minimum 20% loading is recommended under these conditions. The total output voltage span may be externally trimmed as described below. Filtering and Noise Reduction All A-Series BWR 15-20 Watt DC/DC Converters achieve their rated ripple and noise specifications without the use of external input/output capacitors. In critical applications, input/output ripple and noise may be further reduced by installing electrolytic capacitors across the input terminals and/or low-ESR tantalum or electrolytic capacitors across the output terminals. Output capacitors should be connected between their respective output pin (pin 5 or 7) and Common (pin 6) as shown in Figure 2. The caps should be located as close to the power converters as possible. Typical values are listed in the tables below. In many applications, using values greater than those listed will yield better results. To Reduce Input Ripple D5A Models D12A Models D48A Models 47µF, 16V 20µF, 50V 20µF, 100V To Reduce Output Ripple ±5V Outputs ±9/12/15V Outputs 47µF, 10V, Low ESR 22µF, 20V, Low ESR www.murata-ps.com/support MDC_BWR15_20_B05 Page 3 of 6 BWR Models 15-20W, Dual Output DC/DC Converters +OUTPUT 5 +OUTPUT + 1 +INPUT 1 COUT +INPUT COMMON 6 + 6 LOAD 8 COMMON CIN 5 TRIM 2 + –INPUT 2 –INPUT COUT 7 7 –OUTPUT 20k 5-10 Turns LOAD –OUTPUT Figure 2. Using External Capacitors to Reduce Input/Output Ripple/Noise Figure 3a. Trim Connections Using a Trimpot Input Fusing Certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. For MPS A-Series BWR 15-20 Watt DC/DC Converters, you should use slow-blow type fuses with values no greater than the following: VIN Range D5A D12A D48A Fuse Value 6A 4A 2A +OUTPUT 5 1 +INPUT LOAD TRIM 2 8 6 –INPUT LOAD COMMON 7 On/Off Control –OUTPUT The On/Off Control pin (pin 4) may be used for remote on/off operation. A TTL logic high (+2 to +5 Volts, 250µA max.) applied to pin 4 disables the converter. A TTL logic low (0 to +0.8 Volts, 70µA max.), or no connection, enables the converter. Control voltages should be referenced to pin 2 (–Input). Applying a voltage to the Control pin when no input power is applied to the converter can cause permanent damage to the converter. Figure 3b. Fixed-Value Trim Down Resistor Output Trimming The total output voltage span, from +Output (pin 5) to –Output (pin 7) may be trimmed ±5% via a single external trimpot or fixed resistor. The trimpot should be connected as shown in Figure 3a with its wiper connected to pin 8 (Trim). A trimpot can be used to determine the value of a single fixed resistor which should be connected as shown in Figures 3b and 3c. Connect the resistor between pin 8 (Trim) and pin 5 (+Output) to trim "down" the output voltages. Connect the resistor between pins 8 and 7 (–Output) to trim "up" the output voltages. Fixed resistors should be metal-film types with absolute TCR’s less than 100ppm/°C to ensure stability. +OUTPUT 1 +INPUT COMMON TRIM 5 6 LOAD 8 2 LOAD –INPUT 7 –OUTPUT Figure 3c. Fixed-Value Trim Up Resistor www.murata-ps.com/support MDC_BWR15_20_B05 Page 4 of 6 BWR Models 15-20W, Dual Output DC/DC Converters BWR-5/1700-D48A Radiated Emissions EN 55022 Class B, 10 Meters Converter Output = ±5Vdc @ ±1.6A C U S TO M C A PA B I L I T I E S Our experienced applications and design staffs; quick-turn prototype capability; highly automated, SMT assembly facilities; and in-line SPC quality-control techniques combine to give us the unique ability to design and deliver any quantity of power converters to the highest standards of quality and reliability. We have compiled a large library of DC/DC designs that are currently used in a variety of telecom, medical, computer, railway, aerospace and industrial applications. We may already have the converter you need. 80 70 60 Radiated Emissions (dBµV/M) MPS’s world-class design, development and manufacturing team stands ready to work with you to deliver the exact power converter you need for your demanding, large volume, OEM applications. And ... we’ll do it on time and within budget! 50 EN 55022 Class B Limit 40 30 20 10 0 Radiated Emissions –10 –20 Contact us. Our goal is to provide you the highest-quality, most cost-effective power converters available. E M I R A D I AT E D E M I S S I O N S If you’re designing with EMC in mind, please note that all of MPS’s BWR 15-20 Watt A-Series DC/DC Converters have been characterized for radiated and conducted emissions in our new EMI/EMC laboratory. Testing is conducted in an EMCO 5305 GTEM test cell utilizing EMCO automated EMC test software. Radiated emissions are tested to the limits of FCC Part 15, Class B and CISPR 22 (EN 55022), Class B. Radiated emissions plots to FCC and CISPR 22 for model BWR-5/1700-D48A appear below. BWR-5/1700-D48A Radiated Emissions FCC Part 15 Class B, 3 Meters Converter Output = ±5Vdc @ ±1.6A 80 70 Radiated Emissions (dBµV/M) 60 1000 100 Frequency (MHz) Quality and Reliability The A-Series are the first DC/DC Converters to emerge from MPS’s new, company-wide approach to designing and manufacturing the most reliable power converters available. The five-pronged program draws our Quality Assurance function into all aspects of new-product design, development, characterization, qualification and manufacturing. Design for Reliability Design for Reliability is woven throughout our multi-phased, new-productdevelopment process. Design-for-reliability practices are fully documented and begin early in the new-product development cycle with the following goals: 1. To work from an approved components/vendors list ensuring the use of reliable components and the rigorous qualification of new components. 2. To design with safety margins by adhering to a strict set of derating guidelines and performing theoretical worst-case analyses. 3. To locate potential design weaknesses early in the product-development cycle by using extensive HALT (Highly Accelerated Life Testing). 4. To prove that early design improvements are effective by employing a thorough FRACA (Failure Reporting Analysis and Corrective Action) system. FCC Class B Limit 50 HALT Testing 40 The goal of the accelerated-stress techniques used by MPS is to force device maturity, in a short period of time, by exposing devices to excessive levels of "every stimulus of potential value." We use HALT (Highly Accelerated Life Testing) repeatedly during the design and early manufacturing phases to detect potential electrical and mechanical design weaknesses that could result in possible future field failures. 30 20 10 0 Radiated Emissions –10 –20 1000 100 Frequency (MHz) During HALT, prototype and pre-production DC/DC converters are subjected to progressively higher stress levels induced by thermal cycling, rate of temperature change, vibration, power cycling, product-specific stresses (such as dc voltage variation) and combined environments. The stresses are not meant to simulate field environments but to expose any weaknesses in a product’s electro/mechanical design and/or assembly processes. The goal of HALT is to make products fail so that device weaknesses can be analyzed and strengthened as appropriate. Applied stresses are continually stepped up until products eventually fail. After corrective actions and/or design changes, stresses are stepped up again and the cycle is repeated until the "fundamental limit of the technology" is determined. www.murata-ps.com/support MDC_BWR15_20_B05 Page 5 of 6 BWR Models 15-20W, Dual Output DC/DC Converters MPS has invested in a Qualmark OVS-1 HALT tester capable of applying voltage and temperature extremes as well as 6-axis, linear and rotational, random vibration. A typical HALT profile (shown above) consists of thermal cycling (–55 to +125°C, 30°C/minute) and simultaneous, gradually increasing, random longitudinal and rotational vibration up to 20G’s with load cycling and applied-voltage extremes added as desired. Many devices in MPS’s new A-Series could not be made to fail prior to reaching either the limits of the HALT chamber or some previously known physical limit of the device. We also use the HALT chamber and its ability to rapidly cool devices to verify their "cold-start" capabilities. Qualification For each new product, electrical performance is verified via a comprehensive characterization process and long-term reliability is confirmed via a rigorous qualification procedure. The qual procedure includes such strenuous tests as thermal shock and 500 hour life. Qual testing is summarized below. Typical HALT Profile In-Line Process Controls and Screening A combination of statistical sampling and 100% inspection techniques keeps our assembly line under constant control. Parameters such as solder-paste thickness, component placement, cleanliness, etc. are statistically sampled, charted and fine tuned as necessary. Visual inspections are performed by trained operators after pick-and-place, soldering and cleaning operations. Units are 100% electrically tested prior to potting. All devices are temperature cycled, burned-in, hi-pot tested and final-electrical tested prior to external visual examination, packing and shipping. Rapid Response to Problems MPS employs an outstanding corrective-action system to immediately address any detected shortcomings in either products or processes. Whenever our assembly, quality or engineering personnel spot a product/process problem, or if a product is returned with a potential defect, we immediately perform a detailed failure analysis and, if necessary, undertake corrective actions. Over time, this system has helped refine our assembly operation to yield one of the lowest product defect rates in the industry. 100 Soldering Guidelines 40 80 20 40 20 0 0 –20 Random Vibration (G's) Temperature (°C) 60 Murata Power Solutions recommends the specifications below when installing these converters. These specifications vary depending on the solder type. Exceeding these specifications may cause damage to the product. Be cautious when there is high atmospheric humidity. We strongly recommend a mild pre-bake (100° C. for 30 minutes). Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers. –40 10 20 30 40 50 60 70 80 Test Time (minutes) 90 Wave Solder Operations for through-hole mounted products (THMT) For Sn/Ag/Cu based solders: Qualification Testing Maximum Preheat Temperature 115° C. Qualification Test Method/Comments Maximum Pot Temperature 270° C. HALT MPS in-house procedure Maximum Solder Dwell Time 7 seconds High Temperature Storage Max. rated temp., 1,000 hours Thermal Shock 10 cycles, –55 to +125°C Temperature/Humidity +85°C, 85% humidity, 48 hours Lead Integrity MPS in-house procedure Life Test +70°C, 500 hours* Marking Permanency MPS in-house procedure End Point Electrical Tests Per product specification For Sn/Pb based solders: Maximum Preheat Temperature 105° C. Maximum Pot Temperature 250° C. Maximum Solder Dwell Time 6 seconds * Interim electrical test at 200 hours. 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/support MDC_BWR15_20_B05 Page 6 of 6