Dual Output BST Models www.murata-ps.com Low-Cost, High Reliability 3 Watt, DC/DC Converters Typical units FEATURES PRODUCT OVERVIEW Lowest cost! Highest reliability! 100% SMT-on-pcb, including magnetics Rarely, has a Series of low-power DC/DC converters been defined by both low cost and Murata’s quality and reliability. Our new BST Series of dual-output 3W DC/DC’s achieves this “best-of-both-worlds” status by implementing a proven circuit architecture (170-200kHz flyback design) as a full, SMT-on-pcb assembly (including surface-mount magnetics) that is truly 100% automatically assembled. Packaged in miniature 1.25" x 0.8", DIP-like plastic packages (UL94V-0 rated) and requiring no external components, BST Series DC/DC’s bring true component-like convenience to designers of today’s distributed power systems. Output voltages are ±5, ±12 or ±15 Volts. Input voltage ranges are 4.5-9V (“D5” models), 9-18V (“D12” models) or an ultra-wide 18-72V (“D48” models). BST DC/DC’s are fully isolated (1000Vdc guaranteed) and include input (pi type) and output filters within their package. Output transient response 100% automatically assembled Standard "DIP" package and pinouts Fully isolated, 1000Vdc guaranteed ±5, ±12 or ±15 Volt outputs Choice of 3 wide-range inputs: 4.5-9 Volts 9-18 Volts 18-72 Volts Guaranteed efficiencies to 75% –40 to +75°C full-power operation Internal input/output filtering UL1950/C22.2 No. 950/IEC950-1 certified is a quick 200μsec, while output ripple and noise are typically 75mVp-p. These rugged modules are fully encapsulated with a thermally conductive potting compound that contributes to their outstanding moisture/vibration resistance and impressive MTBF. They operate over the full –40 to +75°C temperature range without derating. All models have been thoroughly characterized (electrically, mechanically and thermally), qualified (including HALT), and EMI/EMC tested. Additionally, they are certified to UL1950, CSA 22.2 No. 950 and IEC950. Murata’s BST Model 3W DC/DC’s are excellent selections for telecom/datacom, computer and process-control applications demanding small size, low cost and high reliability. If required, their design “flexibility” allows for easy modification to your application-specific requirements. +VOUT +VIN COMMON –VOUT –VIN PWM CONTROLLER OPTO ISOLATION REFERENCE & ERROR AMP Typical topology is shown. Figure 1. Simplified Schematic For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MDC_BST 3W Models.C01 Page 1 of 4 Dual Output BST Models Low-Cost, High Reliability 3 Watt, DC/DC Converters Performance Specifications and Ordering Guide➀ ORDERING GUIDE SUMMARY Output ➀ ➁ ➂ ➃ Models VOUT (Volts) IOUT (mA Max.) BST-5/250-D12-C BST-5/250-D48-C BST-12/125-D12-C BST-12/125-D48-C BST-15/100-D12-C BST-15/100-D48-C BST-12/105-D5-C BST-15/85-D5-C ±5 ±5 ±12 ±12 ±15 ±15 ±12 ±15 ±250 ±250 ±125 ±125 ±100 ±100 ±105 ±85 Input R/N (mV pk-pk)➁ Typ. Max. 75 75 75 75 75 75 75 75 120 120 150 150 150 150 150 150 Regulation (Max.) Line Load➂ ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% ±0.5% 12 48 12 48 12 48 5 5 Efficiency Min. Typ. IIN➃ (mA) VIN Nom. Range (Volts) (Volts) 9-18 18-72 9-18 18-72 9-18 18-72 4.5-9 4.5-9 25/267 7/69 25/329 8/81 25/329 8/81 60/690 68/689 75% 72% 74% 73% 74% 73% 71% 72% 78% 76% 76% 77% 76% 77% 73% 74% Package (Case, Pinout) C1,P2 C1,P2 C1,P2 C1,P2 C1,P2 C1,P2 C1,P2 C1,P2 Typical at TA = +25°C under nominal line voltage and full-load conditions unless otherwise noted. Ripple/Noise (R/N) measured over a 20 MHz bandwidth. Balanced loads, 10% to 100% load. Nominal line voltage, no-load/full-load conditions. PAR PAR PART NUMBER STRUCTURE MECHANICAL SPECIFICATIONS 1.25 (31.75) B ST - 15 / 100 - D48 - C 0.45 (11.43) RoHS-6 Hazardous Substance Compliance (does not claim EU RoHS exemption 7b – lead in solder) Output Configuration: B = Bipolar Product Series Input Voltage Range: D5 = 4.5-9 Volts (5V nominal) D12 = 9-18 Volts (12V nominal) D48 = 18-72 Volts (48V nominal) Maximum Output Current in mA from each output Nominal Output Voltages: ±5, ±12 or ±15 Volts STANDOFFS 0.025 (0.64) Case C1 0.020 ±0.002 DIA. (0.508 ±0.051) 0.600 (15.24) 0.15 MIN (3.81) 0.200 (5.08) 0.18 (4.57) 0.100 (2.54) PAR 3 4 TEMPERATURE DERATING 7 8 0.600 (15.24) Output Power vs. Ambient Temperature VIN Nominal, Natural Convection 1 2 5 0.80 (20.32) 6 3.5 BOTTOM VIEW Output Power (Watts) 3 2.5 DIMENSIONS ARE IN INCHES (MM) I/O Connections 2 1.5 1 0.5 0 –40 0.10 (2.54) PLASTIC CASE WITH AN INSULATED BASE 0 15 20 25 30 35 40 45 50 55 60 65 70 Ambient Temperature (˚C) 75 80 85 90 95 100 Pin Function P2 1 +Input 2 +Input 3 –Input 4 –Input 5 Common 6 +Output 7 Common 8 –Output 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. www.murata-ps.com/support MDC_BST 3W Models.C01 Page 2 of 4 Dual Output BST Models Low-Cost, High Reliability 3 Watt, DC/DC Converters Performance/Functional Specifications Typical @ TA = +25°C under nominal line voltage and full-load conditions unless noted. ➀ Absolute Maximum Ratings Input Input Voltage Range: "D5" Models "D12" Models "D48" Models 4.5-9 Volts (5V nominal) 9-18 Volts (12V nominal) 18-72 Volts (48V nominal) Input Current See Ordering Guide Input Filter Type Reverse-Polarity Protection Input Voltage: "D5" Models "D12" Models "D48" Models 12 Volts 20 Volts 80 Volts Input Reverse-Polarity Protection Current must be <2A. Brief duration only. Fusing recommended. Pi Output Overvoltage Protection None Yes (Instantaneous, 2A maximum) Output Current Maximum current and short-circuit duration are model dependent. “D12” and “D48” models can withstand sustained output short circuits. Storage Temperature –55 to +100°C Lead Temperature (soldering, 10 sec.) +280°C Output VOUT Accuracy (50% load) ±1%, maximum Temperature Coefficient ±0.02% per °C Ripple/Noise (20MHz BW) See Ordering Guide Line/Load Regulation See Ordering Guide Efficiency See Ordering Guide Isolation Voltage 1000Vdc, minimum Short Circuit Protection: ➁ “D5” Models “D12” and “D48” Models Power-limiting technique, auto-recovery Hiccup technique, auto-recovery Dynamic Characteristics Transient Response (50% load step) 200µsec to ±1.5% of final value Switching Frequency: “D48” Models “D5” and “D12” Models 200kHz 170kHz Environmental Operating Temperature (Ambient, no derating) –40 to +75°C Storage Temperature – 55 to +100°C Physical Dimensions 1.25" x 0.8" x 0.45" (31.8 x 20.3 x 11.4mm) Case Material Diallyl phthalate, UL94V-0 rated Pin Material Gold-plated copper alloy with nickel underplate Weight 0.5 ounces (14.2 grams) ➀ These power converters require a minimum 10% loading to maintain specified regulation. Operation under no-load conditions will not damage these devices; however they may not meet all listed specifications. ➁ The current limit inception point is dependent on the input voltage. Therefore, it is possible to draw current beyond the rated capacity. Users should fully characterize their load conditions. 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 or recommended. PAR TECHNICAL NOTES Floating Outputs Since these are isolated DC/DC converters, their outputs are “floating.” Any BST 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 (pin 6) and –Output (pin 8), with either output grounded. The Common (pins 5 and 7) should be left open (unconnected). Minimum 20% loading is recommended under these conditions. Filtering and Noise Reduction All BST 3 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 (pins 6 and 8) and Common (pins 5 and 7) 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 "D5" Models "D12" Models "D48" Models 47μF, 15V 10μF, 35V 4.7μF, 100V To Reduce Output Ripple ±5V Outputs ±12/15V Outputs 47μF, 10V, Low ESR 22μF, 20V, Low ESR www.murata-ps.com/support MDC_BST 3W Models.C01 Page 3 of 4 Dual Output BST Models Low-Cost, High Reliability 3 Watt, DC/DC Converters +OUTPUT 6 + 1, 2 +INPUT COUT + COMMON CIN 3, 4 5, 7 + –INPUT COUT 8 –OUTPUT Figure 2. Using External Capacitors to Reduce Input/Output Ripple/Noise Input Fusing Certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. For MPS’s BST 3 Watt DC/DC Converters, you should use fast-blow type fuses with values no greater than the following: VIN Range "D5" "D12" "D48" Custom Capabilities 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! 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. Contact us. Our goal is to provide you the highest-quality, most cost-effective power converters available. Fuse Value 1.5A 1A 0.5A 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. © 2014 Murata Power Solutions, Inc. www.murata-ps.com/support MDC_BST 3W Models.C01 Page 4 of 4