dc/dc converters 50-75w wide input dc/dc converters 1 2 year warranty bxb75 series single output industry standard footprint mtbf >1.4 million hours (bellcore 332) input voltage to ets300-132-2 adjustable output voltage no minimum load required separate case ground pin 2:1 input range for battery powered applications undervoltage lockout (uvlo) ul, vde and csa safety approvals the bxb75 series are high power density dc/dc converters packaged in the industry standard footprint (2.40 x 2.28 x 0.50 inches) to give designers optimum choices when specifying for both new and replacement designs. suitable for a wide range of applications in nearly any industry, the bxb75 was particularly designed with communication and distributed power applications in mind. using bellcore 332, the mtbf is greater than 1,400,000 hours. aluminum baseplate technology with four threaded m3 inserts makes heatsink attachment and optimum thermal management easy. the bxb75 series is approved to iec950 by ul, csa and vde. all specifications are typical at nominal input, full load at 25? unless otherwise stated specifications file name: bxb75s.pdf rev: 02 oct 2002 output specifications voltage adjustability 60% to 110% set point accuracy ?.0% line regulation low line to high line ?.05% load regulation full load to min. load ?.10% minimum load 0% overshoot at turn-on and turn-off none undershoot none ripple and noise 3.3v and 5v 75mv pk-pk, (5hz to 20mhz) 20mv rms (see note 1) 12v 100mv pk-pk, 30mv rms temperature coefficient ?.01%/? transient response ?.0% max. deviation (see note 2) 170? recovery to within ?.0% remote sense 0.5vdc transmission line drop compensation input specifications input voltage range 48vin nominal 36 to 75vdc input current no load 100ma max. remote off 20ma max. input current (max.) 3.5a max. @ io max. (see note 4) and vin = 0 to 75v input reflected ripple (see note 6) 5ma pk-pk active low remote on/off (see note 7) logic compatibility open collector ref to -input on 1.2vdc max. off open circuit input specifications (continued) undervoltage lockout 48vin: power up 34v 48vin: power down 32.5v start-up time power up 20ms (see note 8) remote on/off 20ms emc characteristics conducted emissions bellcore 1089 level a (see note 3) fcc part 15 level a en55022, cispr22 level a general specifications efficiency see table isolation voltage input/case 1500vdc input/output 1500vdc output/case 1500vdc switching frequency fixed 500khz typ. approvals and vde0805, en60950, iec950 standards (see note 5) ul1950, csa c22.2 no. 950 case material aluminum baseplate with plastic case material flammability ul94v-0 weight 110g (3.88oz) mtbf bellcore 332 1,400,000 hours min. mil-hdbk-217f 580,000 hours min. @ 40?, 100% full load environmental specifications thermal performance operating case temp. -40? to +100? non-operating -55? to +125? altitude operating 10,000 feet max. non-operating 40,000 feet max. vibration 5hz to 500hz 2.4g rms (approx.)
for the most current data and application support visit www.artesyn.com/powergroup/products.htm notes 1 measured with 10? tantalum capacitor and 1? ceramic capacitor across output. 2 di/dt = 0.1a/1?, vin = 48vdc, tc = 25?, load change = 0.5 lo max. to 0.75 lo max. and 0.75 lo max. to 0.5 lo max. 3 units should be characterised within systems. external components required. 4 input fusing is recommended based on surge current and maximum input current. 5 this product is only for inclusion by professional installers within other equipment and must not be operated as a stand alone product. 6 simulated source impedance of 12 h. 12 h inductor in series with +vin. 7 active high remote on/off option is available (standard product is active low), designate with the suffix ?ht?e.g. bxb75-48s05fht . consult factory for further details and options. 8 start-up into resistive load. protection short circuit protection continuous, automatic recovery overvoltage protection non-latching undervoltage protection non-latching thermal protection 110? baseplate, automatic recovery telecom specification central office interface a ets300-132-2 bxb75 series single output dc/dc converters 50-75w wide input dc/dc converters 2 www.artesyn.com file name: bxb75s.pdf rev: 02 oct 2002 pin connections pin number function 1+ vin 2 remote on/off 3 case 4- vin 5 - vout 6 - sense 7trim 8 + sense 9 + vout output input ovp output output output efficiency regulation model power voltage voltage current current (typ.) line load number (7) (max.) (min.) (max.) 50w 36-75vdc 4.3vdc 3.3v 0a 15a 79% ?.05% ?.1% bxb75-48s3v3flt 75w 36-75vdc 6.5vdc 5v 0a 15a 83% ?.05% ?.1% bxb75-48s05flt 75w 36-75vdc 14.5vdc 12v 0a 6.25a 84% ?.05% ?.1% BXB75-48S12FLT external output trimming output can be externally trimmed by using the method shown. trim up trim down 8 7 6 rt1 or rt2
international safety standard approvals vde0805/en60950/iec950 file no. 10401-3336-1095 ul1950 file no. e136005 csa c22.2 no. 950 file no. lr41062c all dimensions in inches (mm) tolerance : x.xx 0.02in. (0.51mm) x.xxx 0.010in. (0.254mm) view shown pin side up 1.90 (48.26) 0.190 (4.83) 0.010 (0.25) 2 x .080 (2.03) 0.002 (0.05) 4 x m3 x 0.5 through 7 x .040 (1.02) 0.002 (0.05) 2.28 (57.91) max. 0.700 (17.77) 1.000 (25.40) 1.400 (35.56) 2.000 (50.80) 0.190 (4.83) 0.010 (0.25) 0.400 (10.16) 0.500 (12.69) 0.010 (0.25) 0.400 (10.16) 1.000 (25.40) 1.400 (35.56) vo(+) +sen trim -sen vo (-) vi(+) on/off case vi (-) 0.200 (5.08) min. length for all input and output pins 0.500 (12.70) 2.40 (60.96) max. 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 bxb75 series single output dc/dc converters 50-75w wide input dc/dc converters 3 www.artesyn.com file name: bxb75s.pdf rev: 02 oct 2002
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