bothhand usa e-mail: sales@bothhand usa.com http:// www.bothhand usa.com rev:20110512a page 1 of 5 isolated dc-dc converters bwc40w series -- 40watt features wide 4 : 1 input voltage range (9~36v,18~75v) remote on/off input / output isolation voltage: 1.5k vdc high efficiency up to 88% output short circuit protection: hi ccup & auto recovery over voltage protection: clamp mode over temperature protection shielded metal case with insulated baseplate lead free design, rohs compliant adjustable output voltage synchronous rectifier topology customer design available t ec hnical specification all specifications are typical at nominal input, full load and 25c unless otherwise stated. output current (ma) input current (ma) model number input voltage range output voltage (vdc) min. load (1) full. load no load full load eff . (2) (%) capacitive load, max. (3) (uf) bwc40-24s2w 12 0 3350 122 2018 87 3800 bwc40-24s3w 15 0 2650 112 1972 88 3000 BWC40-24D2W 9~36v nominal:24vdc 12 0 1650 58 2012 86 2200 description ,.r :cghrc xrlare hlr aesnhcro hrc =gd=g assnrlcrlel =reafsro tac. .af.n1 ruuaaarsa1m hnnst c.r serlhcasf crterlhcflr lhsfr su c.rer fsace cs ir ohr?g cs cb4?g as h 4rlbd4rlbdwrlvtt e.arnoro trchn aherl bothhand usa e-mail: sales@bothhand usa.com http:// www.bothhand usa.com rev:20110512a page 2 of 5 isolated dc-dc converters bwc40w series -- 40watt input specifications 24v nominal input 9-36vdc input voltage 48v nominal input 18-75vdc input filter pi type input surge voltage 24v input 50vdc (100ms max.) 48v input 100vdc input reflected ripple current nominal vin and full load 38map-p typ. start up time nominal vin and constant resistive load 58ms typ. converter: on open or 3.5v vr 12v remote on/off converter: off short (4) or 0v vr 0 .7v sourcing current of remote control pin nominal vin 0.2 ma idle input current (at remote off state) nominal vin 20 ma environmental specifications operating ambient temperature -40c to +85c (with derating) maximum case temperature +100c storage temperature range -55c to +105c relative humidity 95% rh max. temperature coefficient 0.02% / c max. output specifications output power 40.2 watts max. voltage accuracy full load and nominal vin 1% minimum load see table line regulation ll to hl at full load 0.5% 25% load to full load single 0.5% balanced load dual 0.5% load regulation unbalanced load 25% to 100% full load 3% ripple and noise (20mhz bandwidth) 3.3&5vout models 50mvp-p max. 12& 15vout models 85mvp-p max. 3.3vout models 3.9v 5vout models 6.2v 12vout models 15v over voltage protection (zener diode clamp) 15vout models 18v capacitive load see table over load protection % of full load at nominal input 110% min. thermal shutdown 115c typ. short circuit protection hiccup, automatic recovery transient response settling time 50% load step change 300s typ. transient response over shoot di/dt=0.8a/s 5% of vo
bothhand usa e-mail: sales@bothhand usa.com http:// www.bothhand usa.com rev:20110512a page 3 of 5 isolated dc-dc converters bwc40w series -- 40watt general specifications efficiency nominal input see table isolation voltage input to output 1500vdc isolation resistance 500vdc 10 9 ohms min. isolation capacitance 1200pf typ. switching frequency 300khz typ. reliability, calculated mtbf 9.68 10 5 hrs physical specifications case material nickel-coated copper base material fr4 pcb potting material silicon rubber (ul94 v-0) 2.0 0 2.00 0.40 inch dimensions (50.8 50.8 10.2 mm) weight 60g (2.11oz) typ. bwc40w series bwc40w series po wer derating curve without heatsink (5) power derating curve with heatsink (5) amb ient temp.ta ( ) ambient temp.ta ( ) bwc40-24s2w bwc40-24s2w input voltage vs. efficiency output current vs. efficiency input voltage (v) output current (a) efficiency (%) efficiency (%) 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 59.1 output power (%) output power (%) 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 66.1 55 60 65 70 75 80 85 90 95 9 12 15 18 21 24 27 30 33 36 55 60 65 70 75 80 85 90 95 0.335 0.670 1.005 1.340 1.675 2.010 2.345 2.688 3.015 3.350
bothhand usa e-mail: sales@bothhand usa.com http:// www.bothhand usa.com rev:20110512a page 4 of 5 isolated dc-dc converters bwc40w series -- 40watt b w c40-24s2w bwc40-24s2w transient response at 50%~100% max load l oop gain & phase at vi=24v,full load note 1 . io below this value will not damage these converters, however, they may not meet all listed specifications. 2. typical value, tested at nominal input and full load. 3. for each output. 4. short to -vin (pin 2). 5. based on bwc40-24s2w. mechanical dimensions s p ecifications subject to change without notice. pin assignment pin single dual 1 +vin +vin 2 -vin -vin 3 remote on/off 4 -sense +vout 5 +sense common 6 +vout common 7 -vout -vout 8 trim unit: mm [inch] tolerance: 0.5[ 0.02]
bothhand usa e-mail: sales@bothhand usa.com http:// www.bothhand usa.com rev:20110512a page 5 of 5 isolated dc-dc converters bwc40w series -- 40watt heat-sink m a terial: aluminum weight: 19g (0.67oz) (without converter) note: the product label on converter has to be removed before mounting the heat-sink. for volume orders, converters will be supplied with heat-sink already mounted. please contact factory for quotation.
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