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bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 1 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. features ? isolated ? output over - voltage shutdown ? high efficiency ? over temperature protection ? high power density ? ocp/scp ? fixed frequency (300 khz) ? remote on/off ? low cost ? basic insulation ? input under - voltage lockout ? input o ver - v oltage l ockout ? class 1, category 2, isolated dc/dc converter (refer to ipc - 9592) ? ul60950 - 1 recognized (ul/cul) ( pending ) applications ? networking ? computers and peripherals ? telecommunications description t he 0rqb - q2t06x is an isolated dc / dc converter that operate s from a nominal 48 v dc source. this unit will provide up to 39 0 w of output power from a nominal 48 v dc input. this unit is designed to be highly efficient and low cost. features include remote on/off, over current protection and under voltage lockout. the converter is provided in an industry standard quarter brick package. part selection output v oltage input voltage max. output current max. output power typical efficiency model number active high model number active low 6.5 v dc 36 v dc - 75 v dc 6 0 a 39 0 w 9 5 % 0r qb - q2t06 5 0r qb - q2t06 l note : add ?g? suffix at the end of the model number to indicate tray packaging. part number explanation 0 r q b ? q2 t 06 x 1 2 3 4 5 6 7 1 --- through h ole 2 --- roh s 6, change ? r ? to ? 7 ? means rohs 5 3 --- series name, 1/ 4 brick 4 --- series code 5 --- input range 48 v wide (36 - 75v) 6 --- output v oltage (6.5 v ) 7 --- option , ? x ? of the model part number to be 0 - 9, a - z, which will represent the special request of customer. 0r qb - q2t06 x rohs compliant rev. j
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 2 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. abso lute maximum ratings parameter min typ max unit notes continuous input voltage - 0.3 - 80 v input transient voltage - - 100 v remote on/off - 0.3 - 18 v i/o isolation voltage - - 15 00 v ambient temperature - 40 - 85 ? c storage temperature - 55 - 1 25 ? c note: ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may permanently damage the device. input specifications parameter min typ max unit notes operating input voltage 36 48 75 v input current (f ull load) - - 13.0 a input current (no load) - 80 100 ma remote off input current - 1 5 20 ma input reflected ripple current ( rms) - 5 10 ma input reflected ripple current (pk - pk) - 20 40 ma tested with simulated source impedance of 10 uh , 5 hz to 20 mhz ; use a 100 uf/100 v electrolytic capacitor wit h esr = 1 ohm max. at 200 k hz at 25 ? c . i 2 t inrush current transient - - 1 a 2 s turn - on voltage threshold 33 34.5 36 v turn - off voltage threshold 32 33.5 34.5 v caution: this converter is not inte rnally fused. an input line fuse must be used in application . r ecommend a fast - acting fuse with maximum rating of 20 a on system board. refer to the fuse manufacture ? s datasheet for further information. notes: 1. this converter has internal c - l - c ( 0 uf - 0.72 uh - 9.4 uf ) filter. 2 . all specificatio ns are typical at 25 ? c unless otherwise stated . output specifications parameter min typ max unit notes output voltage set point 6.37 6.50 6.63 v vin=48v, io=50% load load regulation - 15 30 mv lin e regulation - 1 5 3 0 mv regulation over temperature ( - 40deg.c - 85deg.c) - 3 0 65 mv ripple and noise (pk - pk) - 50 120 mv ripple and noise ( rms ) - 10 25 mv 0 - 20 mhz bw, with a 1f ceramic capacitor and a 470 uf tantalum cap at output. ripple and noise (pk - pk) under worst case - - 150 mv over all operating input voltage , l oad and temperature conditions .
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 3 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. output specifications (continued) parameter min typ max unit notes output current range 0 - 6 0 a output dc current limit 64 7 2 75 a short circuit surge transient - - 6 a 2 s rise time - 25 - ms 40 50 ms enable f r om vin turn on time - 40 50 ms enable f r om on/off overshoot at turn on - 0 3 % output capacitanc e 0 - 100 00 uf transient response overshoot - - 40 0 mv v50 %~ 75 % of max load settling time - - 3 00 us overshoot - - 40 0 mv v75 %~ 50 % of max load settling time - - 3 00 us di/dt=0.1a/us, vin=48vdc, ta=25c, with a 1f ceramic capacitor and a 470 uf tantalum cap at the output. overshoot - - 5 00 mv v50 %~ 75 % of max load settling time - - 3 00 us overshoot - - 5 00 mv v75 %~ 50 % of max load settling time - - 3 00 us di/dt= 1a/us, vin=48vdc, ta=25c, with a 1f ceramic capacitor and a 470 uf tantalum cap at the output. note : all specifications are typical at nominal input, full load at 25c unless otherwise stated . general specifications parameter min typ max unit notes efficiency 94 95 - % vin=48v, full load switching frequency - 300 - kh z over temperature protection - 125 - ? c over voltage protection(static) - 8 .5 - v weight - 71 - g fit 478 - calculated per bell core s r - 332 ( vin=48v, vo=6.5 v, io= 30 a, 500lfm, t a = 25 ? c , fit=10 9 /mtbf) dimensions inches (l w h) millimeters (l w h) 2. 28 x 1.45 x 0.5 4 5 7.91 x 36.83 x 1 3 .70 - isolation characteristics input to output - - 1500 v input to case - - 1500 v output to case - - 500 v isolation resistance 10m - ohm isolation c apacitance - 2 7 00 - pf note : all specificat ions are typical at 25 ? c unless otherwise stated.
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 4 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. efficiency data 80.00% 82.00% 84.00% 86.00% 88.00% 90.00% 92.00% 94.00% 96.00% 98.00% 6a 15a 30a 45a 60a output current(a) 36 v 48 v 75 v
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 5 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. thermal derating curve maximum junction temperature of semiconductors derated to 1 20 degree c. the otp is achieved b y temperature sensor u1 0 and it is in non - latch mode when the hottest component q 12 reaches 12 0 c with 200lfm air flow correspondingly. it will restart automatically when the temperature falls down to 105 c . the protecting point will be v aried a little under different condition s (air flow, ambient temperature, input voltage, load...). temperature reference points on top side temperature reference points on bottom side derating curve under 48v input air flow bottom view
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 6 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. ripple and noise waveform 48vdc input, 6.5vdc/60a note: ripple and noise at full load, with a 1uf ceramic cap and a 470 uf tantalum cap at output , ta=2 5 deg c . transient response waveforms vout= 6.5v 50% - 75% load transients vout= 6.5v 75% - 50% load transients note: transient response at di/dt= 1a/us, with 1uf ceramic cap and 47 0uf aluminum cap at output , and ta=25 deg c .
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 7 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. startup & shutdown rise time vout= 6.5v/60a at vin=48v@ta=25 vout= 6.5v/60a at vin=48v@ta=25 cext = 0uf cext = 10000uf startup time startup from vin startup from on/off ch1: vo ch1: vo ch3: vin ch3: on/off vout= 6.5v /60a at vin=48v@ta=25 vout= 6.5v/60a at vin=48v@ta=25 cext = 10000uf cext = 10000uf
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 8 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. startup & shutdown (c ontinued) shutdown vout= 6.5v/60a at vin=48v@ta=25 cext = 10000uf over current protection to provide protection in a fault output overload condition, the module is equipped with internal current - limiting circuitry and can endure current limiting for a few mili - seconds. if the over current condition per sists beyond a few milliseconds, the module will shut down into hiccup mode and restart once every 400ms. the module operates normally when the output current goes into specified range. the typical average output current is 4.8 a during hiccup. output current waveform expansion of on time portion
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 9 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. remote on/off parameter min typ max unit notes signal low (unit on) - 0.3 - 0.8 v signal high (unit off) active low 2.4 - 18 v 0r qb - q2t06 l. the remote on/off pin op en, unit o ff . signal low (unit off) - 0.3 - 0.8 v signal high (unit on) active high 2.4 - 18 v 0r qb - q2t06 5 . the remote on/off pin open, unit on. current sink 0 - 1 ma recommended remote on/off circuit for active low control with open collector/drain circuit control with photocoupler circuit control with logic circuit permanently on recommended remo te on/off circ uit for active high control with open collector/drain circuit control with photocoupler circuit control with logic circuit permanently on vin + vin - on / off vin + vin - on / off vin + vin - on / off vcc vin + vin - on / off vin + vin - on / off vin + vin - on / off vin + vin - on / off vcc vin + vin - on / off
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 10 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. input u nder - voltage l ockout safety & emc safety 1. material flammability ul94v - 0 2. tuv certification en60950 - 1 3. ul certification ul60950 - 1 emc 1. surge iec61000 - 4 - 5 2. dc - dip iec 61000 - 4 - 29 3. conductive emi en55022 class a compliance to en55022 class a (both q.peak and average) with the following inductive and capacitive filter setup: v1=3 2 v v2=34v input voltage ( v ) i n p u t c u r r e n t voltage falling voltage rising v 1 v 2 under - voltage lockout 1 2 4 3 t1a 1 2 4 3 t2a cx1 cx2 cx3 cy11 cy12 cy22 cy21 cy32 cy31 cx4 cy42 cy41 +vin -vin +vout -vout test module ry12 ry22 ry32 ry21 ry11 ry31 ry42 ry41
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 11 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. safety & emc (continued) item designator parameter 1 cx2 100uf/100v, a l cap 2 cx3 220uf/100v, al cap 3 cy31 , cy32 , cy41 , cy42 2*6.8nf/1000v,ceramic 4 ry31 , ry32 , ry41 , ry42 1206,0r,resistor 5 t2a 0.81mh, common mode 6 t1a,cx1,cx2,ry11,ry21,ry12 ry22,cy11,cy21,cy12,cy22 nil positive: negative:
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 12 isolated dc/dc converters 36 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick converter j u n . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. mechanical outline note: this module is recommended and compatible with pb - free wave soldering and must be soldered using a peak solder temperature of no more than 26 0 oc for less th a n 5 seconds . note : 1 ) all pins: material - copper alloy ; finish ? 3 micro inches minimum gold over 50 micro inches minimum nickel plate . 2 ) undimensioned components are shown for visual reference only. 3 ) all dimensions in inches (mm) ; tole rances: x.xx +/ - 0.02 in. (x.x +/ - 0.5mm) x.xxx +/ - 0.010 in. (x.xx +/ - 0.25mm) . pin connections pin# function pin size 1 vin (+) 0 .04" 2 enable 0.04" 3 vin ( - ) 0.04" 4 vo ut ( - ) 0.0 6 " 5 vo ut (+ ) 0.0 6 "
? 20 11 bel fuse inc. specifications sub ject to change without notice. 0602 11 13 corporate far east europe bel fuse inc. bel fuse ltd. bel fuse europe ltd. 206 van vorst street 8f/ 8 luk hop street preston technology management centre jersey city, nj 07302 san po kong marsh lane, suite g7, preston tel 201 - 432 - 0463 kowloon, hong kong lancashire, pr1 8ud, u.k. fax 201 - 432 - 9542 tel 852 - 2328 - 5515 tel 44 - 1772 - 556601 www.belfuse.com fax 852 - 2352 - 3706 fax 44 - 1772 - 888366 www.belfuse.com www.belfuse.com isolated dc/dc converters 3 6 vdc - 75 v dc input 6.5 vdc / 6 0 a output, 1/ 4 brick j u n . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. revision history date revi sion changes detail approval 2009 - 0 6 - 16 a first release joe wei 2009 - 0 6 - 23 b delete output trim and remote sense function, update mechanical draw ing joe wei 2009 - 0 6 - 30 c 1. update input c - l - c filter; 2. change max output cap form 5600uf to 10000uf ; 3. add transient response of di/dt=1a/us ; 4. change output current from 65a to 60a. joe wei 2009 - 0 9 - 25 d 1.changge swit ch ing frequency from 250k to 30 0k , 2.no load input current . 3.remote off input current . 4.load regulation . 5.line regulation . 6.regulation over temperature . 7.output dc current limit . 8.turn on time . 9.rise time . 10.add efficiency, td,nr,tr yp zhou 2009 - 10 - 19 e 1.add i 2 t inrush current transient ; 2.add short circuit surge transient ; 3. add mtbf data ; 4 .update derating curve under normal input ; 5. add ocp,ovp , otp, safety&emc yp zhou 2009 - 10 - 23 f 1. update test condition of mtbf; 2. update waveform for ovp yp zhou 2010 - 03 - 02 g update m echanical drawing. jz wang 2010 - 08 - 09 h 1. update operating input current, turn on voltage threshold , turn off voltage threshold and input c - l - c filter in input specifications. 2. update load regulation, output dc current limit and turn on time in output specifications. 3. add layout. jz wang 2011 - 01 - 17 i update the typical efficiency from 93.5% to 94.5% in general specifications and update efficiency data, otp and layout. jz wang 2011 - 06 - 02 j n ew design. jz wang rohs com p liance complies with the e uropean directive 2002/95/ec, calling for the elimination of lead and other hazardous substances from electronic products.

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