n n n n n n n n n n innovation and ex c ell e n c e ? ? dual output bst models
figure 1. simplified schematic low-cost, high-reliability 3 watt, dc/dc converters features lowest cost! highest reliability! 100% smt-on-pcb, including magnetics 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 +75c full-power operation internal input/output filtering ul1950/c22.2 no. 950/iec950 certified modifications and customs for oem?s datel, inc., mansfield, ma 02048 (usa) ? tel: (508)339-3000, (800)233-2765 fax: (508)339-6356 ? email: sales@datel.com ? internet: www.datel.com
rarely, has a series of low-power dc/dc converters been defined by both low cost and datel's made-in-the-usa 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 is a quick 200sec, 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. datel ? 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.
0.020 0.002 dia. (0.508 0.051) 0.15 min (3.81) 0.45 (11.43) 1.25 (31.75) 0.200 (5.08) 0.10 (2.54) 0.80 (20.32) 0.600 (15.24) 0.100 (2.54) 0.18 (4.57) standoffs 0.025 (0.64) 0.600 (15.24) bottom view 1 2 34 56 8 7 plastic case with an insulated base xst series 3w, dual output dc/dc converters 2 mechanical specifications ? typical at t a = +25 c under nominal line voltage and full-load conditions unless otherwise noted. ? ripple/noise (r/n) measured over a 20mhz bandwidth. ? balanced loads, 10% to 100% load. ? nominal line voltage, no-load/full-load conditions. bst-5/250-d12 5 250 75 120 0.5% 0.5% 12 9-18 25/267 75% 78% c1, p2 bst-5/250-d48 5 250 75 120 0.5% 0.5% 48 18-72 7/69 72% 76% c1, p2 bst-12/105-d5 12 105 75 150 0.5% 0.5% 5 4.5-9 60/690 71% 73% c1, p2 bst-12/125-d12 12 125 75 150 0.5% 0.5% 12 9-18 25/329 74% 76% c1, p2 bst-12/125-d48 12 125 75 150 0.5% 0.5% 48 18-72 8/81 73% 77% c1, p2 bst-15/85-d5 15 85 75 150 0.5% 0.5% 5 4.5-9 68/689 72% 74% c1, p2 bst-15/100-d12 15 100 75 150 0.5% 0.5% 12 9-18 25/329 74% 76% c1, p2 bst-15/100-d48 15 100 75 150 0.5% 0.5% 48 18-72 8/81 73% 77% c1, p2 performance specifications and ordering guide r/n (mvp-p) ? load ? v out (volts) output package (case, pinout) efficiency regulation (max.) line v in nom. (volts) range (volts) model input i in ? (ma) ? max. typ. typ. min. i out (ma, max.) part number structure mechanical specifications input voltage range: d5 = 4.5-9 volts (5v nominal) d12 = 9-18 volts (12v nominal) d48 = 18-72 volts (48v nominal) nominal output voltages: 5, 12 or 15 volts maximum output current in ma from each output product series output configuration: b = bipolar 15 b st 100 d48 -/ - case c1 pin 1 2 3 4 5 6 7 8 i/o connectiions function p2 +input +input ? input ? input common +output common ? output
bst models 3w, dual output dc/dc converters 3 performance/functional specifications typical @ t a = +25 c under nominal line voltage and full-load conditions unless noted. ? technical notes ? 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. ? application-specific internal input/output filtering can be recommended and perhaps added internally upon request. contact datel applications engineering for details. ? devices can be screened or modified for higher guaranteed isolation voltages. contact datel applications engineering for details. input input voltage range: "d5" models 4.5-9 volts (5v nominal) "d12" models 9-18 volts (12v nominal) "d48" models 18-72 volts (48v nominal) input current see ordering guide input filter type ? pi reverse-polarity protection yes (instantaneous, 2a maximum) output v out 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 current limiting: ? d5 ? models power-limiting technique, auto-recovery ? d12 ? and ? d48 ? models hiccup technique, auto-recovery dynamic characteristics transient response (50% load step) 200sec to 1.5% of final value switching frequency: ? d48 ? models 200khz ? d5 ? and ? d12 ? models 170khz environmental operating temperature (ambient, no derating) ? 40 to +75 c storage temperature ? 40 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 brass, solder coated weight 0.5 ounces (14.2 grams) input voltage: "d5" models 12 volts "d12" models 20 volts "d48" models 80 volts input reverse-polarity protection current must be <2a. brief duration only. fusing recommended. output overvoltage protection none output current current limited. max. current and short-circuit duration are model dependent. ? d12 ? and ? d48 ? models can withstand sustained output short circuits. storage temperature ? 40 to +100 c lead temperature (soldering, 10 sec.) +300 c these are stress ratings. exposure of devices to 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. absolute maximum ratings 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. 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 47f, 15v "d12" models 10f, 35v "d48" models 4.7f, 100v to reduce output ripple 5v outputs 47f, 10v, low esr 12/15v outputs 22f, 20v, low esr in critical, space-sensitive applications, datel may be able to tailor the internal input/output filtering of these units to meet your specific require- ments. contact our applications engineering group for additional details.
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 datel bst 3 watt dc/dc converters, you should use slow-blow type fuses with values no greater than the following: v in range fuse value "d5" 1.5a "d12" 1a "d48" 0.5a datel ? 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. xst series 3w, dual output dc/dc converters datel makes no representation that the use of its products in the circuits described herein, or the use of other technical info rmation 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 s ubject to change without notice. the datel logo is a registered datel, inc. trademark. datel (uk) ltd. tadley, england tel: (01256)-880444 datel s.a.r.l. montigny le bretonneux, france tel: 01-34-60-01-01 datel gmbh m nchen, germany tel: 89-544334-0 datel kk tokyo, japan tel: 3-3779-1031, osaka tel: 6-354-2025 datel, inc. 11 cabot boulevard, mansfield, ma 02048-1151 tel: (508) 339-3000 (800) 233-2765 fax: (508) 339-6356 internet: www.datel.com email: sales@datel.com data sheet fax back: (508) 261-2857 ds-0443 8/99 custom capabilities innovation and ex c ell e n c e ? ? iso-9001 registered +input +output ? output common ? input 1, 2 5, 7 3, 4 6 8 c in c c out out + + +
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