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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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. features ? isolated ? output over - voltage protection ? 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 ? baseplate ? input o ver - v oltage l ockout ? class 1, category 2, isolated dc/dc converter (refer to ipc - 9592) ? ul60950 - 1 2 nd edition recognized (ul/cul) applications ? networking ? computers and peripherals ? telecommunications description t he 0rqb - q2 t09x is an isolated dc / dc converter that operate s from a nominal 48 v dc source. this unit will provide up to 385 w of output power from a nomi nal 48 v dc input. this unit is designed to be highly efficient and low cost. features include remote on/off, over current protection and overvoltage protection. the converter is provided in an industry standard quarter brick package. part selection outpu t voltage input voltage max. output current max. output power typical efficiency model number active high model number active low 9.6 vdc 36 v dc - 75 v dc 40 a 385 w 9 5 % 0rqb - q2t 096 0rqb - q2t 09l note : add ?g? suffix at the end of the model number to indicate tray packaging. part number explanation 0 r q b ? q 2 t 0 9 x 1 2 3 4 5 6 7 1 --- through h ole 2 --- rohs 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 (9.6 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 - q2 t09 x rohs compliant rev. f
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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. a bsolute maximum ratings parameter min typ max unit notes continuous input voltage - 0.3 - 75 v input transient voltage - - 100 v 100 ms maximum remote on/off - 0.3 - 18 v i/o isolation voltage - - 15 00 v ambient temperature - 40 - 85 ? c storage te mperature - 55 - 125 ? 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 (full load) - - 1 5 a input current (no load) - 1 20 180 ma remote off input current - 1 0 20 ma input reflected ripple current ( rms) - 5 - ma input reflected ripple current (pk - pk) - 2 0 - ma tested with simulated source impedance of 1 2 uh , 5hz to 20mhz ; use a 10 0 uf/100 v electrolyt ic c apacitor with 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 34 3 5 3 6 v turn - off voltage threshold 32 3 4 3 4.8 v caution: this converter is not i nternally 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 ( 0.94u f - 1uh - 7 .8uf ) 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 9. 43 9.63 9. 82 v vin=48v, io=50% load load regulation - 0. 2 0.5 % v o vi n=48v, io=io ,min to io , max line regulation - 0.5 1 %vo vin=36v ~ 75v, io= 50% load regulation over temperature - 0.5 1 %vo - 40deg.c - 85deg.c total regulation - - 2 %vo includ ing set point, load/line/temperature regulation ripple and noise (pk - pk) - - 15 0 mv ripple and noise ( rms ) - - 6 0 mv 5 hz - 20 mhz bandwidth, vin=48v
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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. output specifications (continued) parameter min typ max unit notes output current range 0 - 4 0 a output dc current limit 42 4 8 54 a short circuit surge transient - - 5 a 2 s rise time - 20 - ms 60 - ms enable f r om vin turn on time - 40 - ms enable f r om on/off overshoot at turn on - 0 - % output capacitance 0 - 20000 uf back b ias s tart - up - - 90 %vo - - 2 a 50% of nominal output voltage back d rive c urrent l imit - - 50 ma transient response overshoot - 400 600 mv v50 %~ 75 % of max load settling time - 0.5 - m s overshoot - 400 600 mv v75 %~ 50 % of max load settling time - 0.5 - m s di/dt=0.1a/us, vin=48vdc, ta=25c, with a 1f ceramic capacitor and a 10uf 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 - 9 5 - % vin=48v, full load switching frequency - 300 - khz over temperature protection - 12 5 - ? c over voltage protection(static) 11. 2 - 1 1.8 v this voltage is achieved by trimming up output slowly weight - 75 100 g fit 357 - ca lculated per bell core s r - 332 ( vin=48v, vo= 9.6 v, io= 40 a, t a = 25 ? c , fit=10 9 /mtbf) dimensions inches (l w h) millimeters (l w h) 2.30 x 1.45 x 0.67 58.42 x 36.83 x 17.00 - isolation characteristics input to output - - 1500 v isolation resis tance 10m - ohm isolation c apacitance - 22 00 - pf note s : 1. it is important to maintain symmetric layout of all converters' input and output power traces to achieve good current sharing. oring diodes or mosfets may be needed in parallel operation. 2 . all specifications 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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 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% 4.00 10.00 20.00 30.00 40.00 output current(a) 36 v 48 v 75 v thermal derating curve
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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. thermal derating curve (continued) vin=36v vin=48v vin=75v
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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. ripple and noise waveform 48vdc input, 9.6 vdc/ 40 a output note: ripple and noise at full load, with a 1 uf ceramic cap and a 10 uf tantalum cap at output , and ta=25 deg c . transient response waveforms vout= 9.6 v, 50% to 75% load transients vout= 9.6 v, 75% to 50% load transients note: transient r esponse at di/dt=0.1a /us, 1 uf ceramic cap and 10 uf 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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. startup & shutdown rise time s tartup time test condition: vin=48v, io=40a startup from vin ch1: vo ch3: vin test condition: vin=48v, io=40a startup from on/off ch1: vo ch3: on/off test condition: vin=48v, io=40a
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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. startup & shutdown (continued) s hutdown 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 persists beyond a few milliseconds, the module will shut down into hiccup mode and restart once every 400ms. the module operates nor mally when the output current goes into specified range. the typical average output current is 5 a during hiccup. test condition: vin=48v test condition: vin=48v, io=40a
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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. over temperature protection the otp is achieve d by thermistor r25 over the threshold is set at 12 5 c in non - latch mode; the hottest component q 13 reaches 130c with 10 0lfm air flow correspondingly (in fact, the hottest component h1 reaches 100c with 100lfm air flow correspondingly) . it will restart auto matically when the temperature falls down to 100c. the protecting point will be varied a little under different conditions (air flow, ambient temperature, input voltage, load...). the hottest component on the top side: q 13 the thermistor on the bottom side: r 25
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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 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 0rqb - q2t 09 l. the remote on/off pin op en, unit o ff . signal low (unit off) - 0.3 - 0.8 v signa l high (unit on) active high 2.4 - 18 v 0rqb - q2t 096 . 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 cir cuit permanently on recommended remo te on/off circuit for active high control with open collector/drain circuit control with photocoupler circuit cont rol 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 11 isolated dc/dc converters 36 vdc - 75 v dc input 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. input u nder - voltage l ockout fundamental circuit diagram v1=3 4 v v2=35 v pwm controller inductor resistor vin + vin - vout + vout - capacitor driver t enable mosfet rsense driver diode feedback isolated ic input voltage ( v ) voltage falling voltage rising v 1 v 2 under - voltage lockout
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 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. 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 iec61000 - 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: c1 = c2 = c3 = 68uf/100 v (1ab012230187) c4=c5=1nf t1 = 180uh common mode choke type t50277 falco t2 = t3 = 0.68uh shielded power inductor type srp7030 - r68fm bourns positive negative f igure - recommended filter
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 13 isolated dc/dc converters 36 vdc - 75 v dc input 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. layout layout of components on top side layout of components on bottom side
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201 - 432 - 0463 ? fax 201 - 432 - 9542 ? www.belfuse.com 14 isolated dc/dc converters 36 vdc - 75 v dc input 9.6 vdc / 4 0 a output, 1/ 4 brick converter jun . 02 , 20 1 1 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 sol dered 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 v isual reference only. 3 ) all dimensions in inches (mm) ; tolerances: x.xx +/ - 0.02 in. (x.x +/ - 0.5mm) x.xxx +/ - 0.010 in. (x.xx +/ - 0.25mm) . pin define pin# function pin size 1 vin (+) 0.04" 2 on/off 0.04" 3 vin( - ) 0.0 4 " 4 vo ( - ) 0.0 6 " 5 vo (+) 0.0 6 "
? 20 1 1 bel fuse inc. specifications subject to change without notice. 0 602 11 15 corporate far east europe bel fuse inc. bel fuse ltd. bel fuse europe ltd. 2 06 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 36 vdc - 75 v dc input 9.6 vdc / 4 0 a output, 1/ 4 brick jun . 02 , 20 11 bel power inc. , a subsidiary of bel fuse inc. revision history date revi sion changes detail approval 20 10 - 0 4 - 14 p a first release . xf jiang 2010 - 04 - 28 pb 1. delete part number 0rqb - q2t09a/b . 2. add back bias start, back drive current limit . 3. delete td , update mechanical outline(heatsink, pin) . xf jiang 2010 - 11 - 23 c 1. updated no load input current in input specifications , output voltage regulation, output dc curren t limit, transient response in output specifications, over temperature protection in general specifications, ocp, otp, efficiency data, md. 2. add td, nr, tr, startup & shutdown, safety & emc and layout. xf jiang 2011 - 02 - 24 d update d td . xf jiang 2011 - 04 - 29 e 1. updated turn off voltage threshold in input specifications. 2. updated output voltage setpoint, output current limit and transient response in output specifications. 3. updated fit and weight in general specifications. 4. updated uvlo and td. xf jiang 2011 - 06 - 0 2 f delete pending of ul60950 - 1 2 nd edition recognized (ul/cul) in the first page. xf jiang rohs com p liance complies with the european directive 2002/95/ec, calling for the elimination of lead and other hazardous substances from electronic products.

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