page 1 of 4 issued date 2008/05/21 output specifications output power 50 watts, max. voltage accuracy full load and normal vin 1.5% minimum load 0% voltage adjustability (note 5) + 10% , -20% line regulation ll to hl at full load 0.2% load regulation no load to full load see table remote sense (note 5) 10% of vout ripple and noise 20mhz bandwidth (measured with a 1 f m/c and a 10 ft/c) see table temperature coefficient 0.02% / oc, max. transient response recovery time 25% load step change 200 s over voltage protection threshold (non-latching hiccup) 120% vout max. over current protection threshold 110% ~ 140% of iout rated short circuit protection hiccup, automatics recovery general specifications efficiency see table isolation voltage input to output input to case output to case 1600vdc, min. 1000vdc, min. 1000vdc, min. isolation resistance 10 7 ohms, min. isolation capacitance 2500 pf, max. switching frequency 270 khz, typ. approvals and standard iec60950-1, ul60950-1, en60950-1 case material aluminum base plate weight (approx) 42g (1.46 oz) mtbf (note 1) bellcore tr-nwt-000332 mil-hdbk-217f 2.500 x 10 6 hrs 3.568 x 10 5 hrs input specifications input voltage range 24v nominal input 48v nominal input 18 ? 36vdc 36 ? 75vdc input filter l-c type input surge voltage 100ms max 24v nominal input 48v nominal input 50vdc 100vdc start up time nominal vin and constant resistive load power up remote on/off 25ms, typ. 25ms, typ. start-up voltage 24v nominal input 48v nominal input 17vdc 34vdc shutdown voltage 24v nominal input 48v nominal input 15vdc 32vdc remote on/off (note 6) negative logic(standard) positive logic(option) dc-dc on dc-dc off dc-dc on dc-dc off short or 0v < vr < 1.2v open or 3v < vr < 15v open or 3v < vr < 15v short or 0v < vr < 1.2v input current of remote control pin nominal vin -0.5~1.0m a remote off state input current nominal vin 2.5ma environmental specifications operating base-plate temperature range (note 7) -40oc to +100oc (with derating) over temperature protection 110oc, typ. storage temperature range -55oc to +125oc thermal shock mil-std-810f vibration mil-std-810f humidity , max , non-condensing 95% emc characteristics emi (note 8) en55022 class a radiated immunity en61000-4-3 10 v/m perf. criteria a fast transient (note 9) en61000-4-4 2kv perf. criteria b surge (note 9) en61000-4-5 1kv perf. criteria b conducted immunity en61000-4-6 10 vr.m.s perf. criteria a technical specification all s p ecifications are t yp ical at nominal in p ut , full load and 25oc otherwise noted applications wireless network telecom/datacom industry control system distributed power architectures semiconductor equipment features ? 50 watts maximum output power ? single output up to 20a ? compact 2.28 x 1.45 x 0.50 inch package ? high efficiency up to 91% ? 2:1 wide input voltage range ? fixed switching frequency ? industry standard footprint ? no minimum load ? adjustable output voltage ? under-voltage lockout ? input to output isolat ion (basic insulation) ? ce mark meets 2006/95/ec, 93/68/eec and 2004/108/ec ? ul60950-1, en60950-1 and iec60950-1 licensed ? iso9001 certified manufacturing facilities ? compliant to rohs eu directive 2002/95/ec options positive logic re mote on/ off, pi n length description qeb50 single output dc/dc converters provide up to 50 watts of output power in an industry standard quarter-brick package and footprint. these units are specifically designed to meet the power needs of low-voltage silicon. all models feature a wide input range, trimmable output voltage and a 20a current rating.
page 2 of 4 issued date 2008/05/21 output current input current model number input range output voltage min. load full load output (4) ripple & noise no load (3) full load (2) eff (4) (%) load regulation qeb50-24s3p3 18 ? 36 vdc 3.3 vdc 0ma 15a 100mvp-p 70ma 2398ma 90 10mv qeb50-24s05 18 ? 36 vdc 5 vdc 0ma 10a 100mvp-p 120ma 2394ma 91 15mv qeb50-24s12 18 ? 36 vdc 12 vdc 0ma 4.17a 100mvp-p 180ma 2413ma 91 36mv qeb50-24s15 18 ? 36 vdc 15 vdc 0ma 3.33a 100mvp-p 180ma 2392ma 91 45mv QEB50-48S1P8 36 ? 75 vdc 1.8 vdc 0ma 20a 100mvp-p 55ma 904ma 87 5.4mv qeb50-48s2p5 36 ? 75 vdc 2.5 vdc 0ma 20a 100mvp-p 55ma 1240ma 88 7.5mv qeb50-48s3p3 36 ? 75 vdc 3.3 vdc 0ma 15a 100mvp-p 70ma 1199ma 90 10mv qeb50-48s05 36 ? 75 vdc 5 vdc 0ma 10a 100mvp-p 65ma 1197ma 91 15mv qeb50-48s12 36 ? 75 vdc 12 vdc 0ma 4.17a 100mvp-p 120ma 1207ma 91 36mv qeb50-48s15 36 ? 75 vdc 15 vdc 0ma 3.33a 100mvp-p 120ma 1196ma 91 45mv note : 1.bellcore tr-nwt-000332. case 1: 80% stress, temperature at 40oc. mil-hdbk-217f notice2 @ta=25 oc, full load(ground, benign, controlled environment) 2.maximum value at nominal input voltage and full load of standard type. 3.typical value at nominal input voltage and no load. 4.typical value at nominal input voltage and full load. 5.maximum output deviation is 10% inclusive of trim. if remote sense is not being used, the + sense should be connected to its corresponding +output and likewise the ?sense should be connected to its corresponding ?output. 6.the positive logic and pin length are optional ( see table ). the pin voltage is referenced to ?vin. 7.heat sink is optional and p/n 7g-0029a-f, 7g-0030a-f, 7g-0031a-f, 7g-0032a-f. 8.the qeb50 meets en55022 class a and class b only with external components connected before the input pin to the converter. 9.an external input filter capacitor is required if the module has to meet en61000-4-4, en61000-4-5. the filter capacitor power mate suggest: nippon chemi-con ky series, 220 f/100v, esr 48m . 10.baseplate grounding base-plate should be grounded at one of the four screw bolts prior to operation. 11.the converter is p rovided b y basic insulation.
page 3 of 4 issued date 2008/05/21 product options table option suffix negative remote on/off logic, 0.20? pin length (standard) - negative remote on/off logic, 0.145? pin length -l negative remote on/off logic, 0.11? pin length -k positive remote on/off logic, 0.20? pin length -p positive remote on/off logic, 0.145? pin length -s positive remote on/off logic, 0.11? pin length -m output can be externally trimmed by using the method shown below. external output trimming 7 6 trim up r u 6 5 trim down r d pin define 1 - input 2 on/off 3 + input 4 - output 5 - sense 6 trim 7 + sense 8 + output pin connection example qeb50-48s3p3-p
page 4 of 4 issued date 2008/05/21 qeb50-48s05 derating curve 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 100 120 ambient temperature( ) output power (%) 0 lfm 100 lfm 200 lfm 300 lfm 400 lfm 500 lfm qeb50-48s05 derating curve with heatsink 7g-0029 (note 7 ) 0 20 40 60 80 100 120 -40-20 0 20406080100120 ambient temperature( ) output power(%) 0 lfm 100 lfm 200 lfm 300 lfm 400 lfm 500 lfm qeb50-48s05 efficiency vs input voltage 85 86 87 88 89 90 91 92 36 40 44 48 52 56 60 64 68 72 input volt age(v) efficiency(%) qeb50-48s05 efficiency vs output load 60 65 70 75 80 85 90 95 10 20 30 40 50 60 70 80 90 100 output load (% of full load) efficiency(%) recommended filter for en55022 class b compliance the components used in the above figure, together with the manufacturers? part numbers for these components, are as follows: c1 c2 c3 c4 c5 n/a n/a 6.8 f/50v 6.8 f/50v 1.5nf/3kv c6 c7 c8 c9 c10 1.5nf/3kv 6.8 f/50v 6.8 f/50v 6.8 f/50v 0.1 f/50v c11 c12 c13 c14 c15 0.1 f/50v 1.0nf/3kv 1.0nf/3kv 1.0nf/3kv 1.0nf/3kv l1 l2 qeb50-24sxx 620 h 620 h c1 c2 c3 c4 c5 100 f/100v 1.5 f/100v 1.5 f/100v 1.5 f/100v 1.5nf/3kv c6 c7 c8 c9 c10 1.5nf/3kv 47 f/100v 1.5 f/100v 1.5 f/100v 0.1 f/50v c11 c12 c13 c14 c15 0.1 f/50v 1.0nf/3kv 1.0nf/3kv 1.0nf/3kv 1.0nf/3kv l1 l2 qeb50-48sxx 620 h 620 h recommended en55022 class b filter circuit layout 55
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