dc/dc converters 50w high efficiency dc/dc converters 1 2 year warranty exb50 dual series dual positive output ? two independently regulated positive outputs ? each output offers ultra-wide output voltage trim range (0.8v to 3.6v for exb50-48d3v3-1v8, 1.5v to 5.25v for EXB50-48D05-3V3) ? high efficiency topology, 89% typical ? approved to iec60950, ul/cul1950 ? operating ambient temperature of -40c to +70c (natural convection) ? no minimum load on either output ? complies with ets 300 019-1-3/2-3 and ets 300 386-1 the exb50 dual is a 50w independently regulated dual output dc/dc converter specifically designed to meet the power needs of low voltage silicon. housed in an open frame package with an industry standard 1 / 2 brick footprint, the exb50 dual can deliver up to 8.5a from either output, and up to 11a in total, at temperatures of up to 70oc under natural convection. with some forced air and/or reduced ambient temperatures, the exb50 can deliver up to 8.5a from either output, and up to 17a in total. the converter is primarily intended for the networking, telecoms and wireless markets, where small size, lower output voltages with higher currents, low profile and high efficiency are all key demands. product features include wide output trim and remote on/off. overvoltage, short circuit and over-temperature protection combines to make the exb50 dual a very robust and flexible product. all specifications are typical at vin = 48v, io1 = 5a, io2 = 5a, tamb = 25c unless otherwise stated emc characteristics ets 300 386-1 table 5 conducted emissions en55022 with external filter level a (see note 3) en55022 with external filter level b radiated emissions en55022 level a immunity: esd air en61000-4-2 8kv (np), 15kv (rp) esd contact en61000-4-2 6kv (np), 8kv (rp) eft dc power en61000-4-4 2kv (np), 4kv (lfs) eft signal en61000-4-4 1kv (np), 2kv (lfs) radiated field enclosure en61000-4-3 10v/m (np) surges indoor signal en61000-4-5 500v (rp) conducted (dc power) en61000-4-6 10v (np) conducted (signal) en61000-4-6 10v (np) input transients ets 300 132-2, etr 283 general specifications efficiency 89% typ. basic insulation input/output 1500vdc input fuse 48v (see note 2) 4a slow blow hrc switching frequency exb50-48d3v3-1v8 250khz (fixed) EXB50-48D05-3V3 300khz approvals and iec60950 standards ul/cul1950 material flammability ul94v-0 weight 42g (1.48oz) mtbf mil-hdbk-217 177,362 hours environmental specifications thermal performance operating ambient -40c to +100c, (see notes 4 and 5) temperature see curves non-operating -40c to +120c ets 300 019-2-3 classes t3.1 to t3.5 air temperature low: iec 68-2-1 -40c high: iec 68-2-2 +70c change: iec 68-2-14 -40c to +70c relative humidity iec 68-2-56 10% to 100% rh iec 68-2-30 condensation output specifications voltage adjustability exb50-48d3v3-1v8 0.8v to 3.6v EXB50-48D05-3V3 1.5v to 5.25v voltage accuracy both outputs 0.5% max. line regulation low line to high line vout1 0.5% low line to high line vout2 0.5% load regulation full load to no load 0.5% minimum load both outputs 0% ripple and noise both outputs 150mv pk-pk max. 20mhz bandwidth 30mv rms max. transient response 3a to 5a (1a/10s) 150mv peak dev. settling time and back 400s short circuit protection exb50-48d3v3-1v8 17a rms EXB50-48D05-3V3 15a rms input specifications input voltage range 48vin nominal 36 to 75vdc input current no load 100ma max. remote off 4ma max. uvlo turn on voltage all inputs 34v typ. uvlo turn off voltage all inputs 33v typ. active high remote on/off logic compatibility open collector ref. to -input on open circuit voltage or >3.2vdc off (see note 7) <0.4vdc active low remote on/off logic compatibility open collector ref. to -input on 0.4vdc max. off (see note 7) open circuit voltage or >3.2vdc specifications file name: exb50d.pdf rev: 10 june 2002 tv
data sheet ? artesyn technologies ? 2002 the information and specifications contained in this data sheet are believed to be correct at time of publication. however, art esyn technologies accepts no responsibility for consequences arising from printing errors or inaccuracies. specifications are subject to change without notice. no rights under any patent accompany the sale of any such product(s) or information contained herein. for the most current data and application support visit www.artesyn.com/powergroup/products.htm notes 1 latching ovp response time is 2ms (typ.). ovp latch is reset by toggling the control input, or by cycling the input voltage. 2 user must provide recommended fuses in order to comply with safety approvals. 3 meets both level a and level b conducted emissions only with external components connected before the input pins to the converter. 4 maximum temperature on hotspots not to exceed 110oc. see application note 127 on artesyn technologies website www.artesyn.com. 5 see the long form data sheet for derating curves. 6 for stable operation connect an external output capacitor of at least 100f to each output. recommended capacity avx tps series (e.g. tpsd107*010#0100) or equivalents. 7 active low remote on/off, is available. standard product is active high. designate with the suffix -r e.g. EXB50-48D05-3V3-r. 8 maximum total current from the module is 15a for EXB50-48D05-3V3 and 17a for exb50-48d3v3-1v8 with airflow. exb50 dual series dual positive output dc/dc converters 50w high efficiency dc/dc converters 2 please consult our website for the following items: 4 application note 4 longform data sheet www.artesyn.com file name: exb50d.pdf rev: 10 june 2002 input output voltage output current (8) ovp (1) typical model voltage 1 2 1 2 1 2 efficiency number (7) 36-75vdc 3.3v 1.8v 8.5a 8.5a 4.12v 2.34v 86.4% exb50-48d3v3-1v8 36-75vdc 5v 3.3v 7.5a 7.5a 6.25v 4.12v 89% EXB50-48D05-3V3 1.900 (48.26) 2.280 0.02 (57.91 0.5) 0.040 0.002 ( 1.02 0.05) 9 places max open-frame converter height all dimensions in inches (mm) general tolerance 0.01in ( 0.25mm) except where specified otherwise minimum clearance from bottom of converter to lowest component 0.394 (10.00) max 0.138 (3.50) 0.015 (0.37) min control 1.000 (25.40) 1.400 (35.56) 2.400 0.02 (60.96 0.5) 0.500 (12.70) vin- vin+ vo1+ vo1- trim2 trim1 vo2- vo2+ 1.600 (40.64) 1.300 (33.02) 1.000 (25.40) 0.600 (15.24) 0.300 (7.62) 0.400 (10.16) bottom view caution: hazardous internal voltages and high temperatures. ensure that unit is not user accessible. protection short circuit protection continuous overvoltage protection latching thermal protection 125c with automatic recovery telecom specification central office interface a ets300-132-2 input voltage and current requirements pin connections pin number function 1- vin 2 no pin 3 remote on/off 4+ vin 5 vo1 trim 6 vo1 return 7 vo1+ 8 vo2 trim 9 vo2 return 10 vo2+ trim up trim - out + out - out trim trim down trim + out external output trimming
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