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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 3 6 vdc - 75 v dc input , 12 vdc / 25 a out p ut jun . 1 4 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. features ? isolated ? output over voltage shutdown ? high efficiency ? output voltage trim ? fixed frequency (270 khz) ? over te mperature protection ? high power de n sity ? scp/ocp ? input under voltage lockout ? low cost ? input over voltage lockout ? basic insulation ? positive/negative remote sense ? remote on/off ? trim and r emote s ense f unction (optional) ? 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 the 0rq 1 - t 0t12x are isolated dc / dc converter s that operate from a nominal 48 v dc source. th ese units will provide up to 300 w output power from a nominal 48 v dc input. these units are designed to be highly efficient and low cost. features include remote on/off, over current protection and under - voltage lockout. t hese converters are provided in an industry standard quarter brick package . part selection output voltage input voltage max. output current max. output power typical efficiency model number active low model number active high 12 vdc 36 v dc - 75 v dc 25 a 300 w 95 % 0rq1 - t0t12l 0rq1 - t0t120 12 vdc 36 v dc - 75 v dc 25 a 300 w 95 % 0rq1 - t0t12b 0rq1 - t0t12a note : add ?g? suffix at the end of the model number to indicate tray packaging. part number explanation 0 r q1 ? t0 t 12 x 1 2 3 4 5 6 7 1 --- through hole m ount 2 --- rohs 6, change ? r ? to ? 7 ? means rohs 5 3 --- series name , 1/4 brick 4 --- series code 5 --- i nput range ( 36 - 75 v) 6 --- output voltage (12 v) 7 --- suffix, ? 0 ? & ? l ? indicated the unit with t rim and r emote s ense f unction , and ? a ? & ? b ? wi thout trim and remote sense function. 0 r q1 - t0t12 x rohs compliant rev. d
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 3 6 vdc - 75 v dc input , 12 vdc / 25 a out p ut jun . 1 4 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. absolute maximum ratings parameter min typ max unit notes continuous non - operating input voltage - 0.3 - 80 v remote on/off - 0.3 - 1 8 v i/o isolation voltage - - 2250 v ambient temperature - 40 - 85 ? c storage temperature - 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 3 6 48 75 v input current (full load) - - 10 a input current (no load) - 9 0 - ma remote off input current - 1 0 - ma input reflected ripple current ( rms) - 15 - ma input reflected ripple current (pk - pk) - 50 - ma w ith simulated source impedance of 1 0 uh, 5 hz to 20 mhz; use a 100 uf/100 v electrolytic capac itor with esr = 1 ohm max , at 200 k hz @25c . i 2 t inrush current transient - tbd - a 2 s turn - on voltage threshold - 3 4 .5 3 5 .5 v turn - off voltage threshold 3 2 .5 34 - v caution: this converter is not internally fused. an input line fuse must be used in application . r ecommend a fast - acti ng fuse with maximum rating of 1 4 a on system board. refer to the fuse manufacture ? s datasheet for further information. note: all specificatio ns are typical at 25 ? c un less otherwise stated . output specifications parameter min typ max unit notes output voltage set point 11.76 12 12.24 v v in =48 v , io=50%load load regulation - 30 60 mv line regulation - 1 2 24 mv regulation over temperature ( - 40 deg.c - 85 deg.c) - 60 100 mv ripple and noise (pk - pk) - 50 10 0 mv ripple and noise ( rms ) - 2 0 5 0 mv 0 - 20 mhz b w, with 1 uf ceramic load cap acitor and a 10 uf t antalum cap acitor at the output . output current range 0 - 25 a output dc current limit 26 32 38 a
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 3 6 vdc - 75 v dc input , 12 vdc / 25 a out p ut jun . 1 4 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. output specifications (continued) parameter min typ max unit notes short circuit surge transient - tbd - a 2 s turn on time - 8 0 12 0 ms overshoot at turn on - 0 3 % outpu t capacitance 0 - 560 0 uf transient response overshoot - - 6 00 mv v 50 %~ 75 % of max load settling time - - 3 00 us overshoot - - 6 00 mv v 75 %~ 50 % o f max load settling time vo= 12 v - - 3 00 us di/dt=0.1a/us, vin=48vdc, ta=25 c , with 1 uf ceramic c ap acitor and a 10 uf t antalum cap acitor 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 - % v in =48 v, full load. switching frequency - 270 - khz isolation capacitance - 2200 - pf over t emperature protection - 125 - over voltage protection - 14 - v output voltage trim range 80 - 105 %vo ,set remote sense compensation - - 5 %vo ,set the total voltage increased by trim and remote sense should not exceed 5%vo . weight - 71 - g fit tbd - calculated per bell core s r - 332 ( vin=48 v, vo=12 v, io=20 a, t a = 25 ? c , fit=10 9 /mtbf) dimensions inches (l w h) millimeters (l w h) 2. 2 8 x 1.45 x 0.50 5 7.91 x 36.83 x 12.70 - note : 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 3 6 vdc - 75 v dc input , 12 vdc / 25 a out p ut jun . 1 4 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. efficien cy data 80.00% 82.00% 84.00% 86.00% 88.00% 90.00% 92.00% 94.00% 96.00% 98.00% 2.50 6.25 12.50 18.75 25.00 output current(a) 36 v 48 v 75 v thermal derating curve m aximum junction temperature of semiconductors derated to 120 degree c.
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 3 6 vdc - 75 v dc input , 12 vdc / 25 a out p ut jun . 1 4 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. ripple and noise waveform 48 vdc input, 12 vdc/25 a output note: ripple and noise at full load, w ith a 1uf ceramic cap and a 10 uf tantalum cap at output, ta=25 deg c. transient response waveforms 50% - 75% load transients at vin=48 v 75% - 50% load transients at vin=48 v note: transient response at di/dt=0.1a/us, with a 1 u f ceramic cap and a 10uf tantalum 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 6 isolated dc/dc converters 3 6 vdc - 75 v dc input , 12 vdc / 25 a out p ut jun . 1 4 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. remote on/off parameter min typ max unit notes signal low (unit o n ) - 0.3 - 0.8 v signal high (unit o ff ) active low 2.4 - 18 v the remote on/off pin open, unit o ff. signal low (unit o ff ) - 0.3 - 0.8 v signal high (unit o n ) active high 2.4 - 18 v the remote on/off pin open, unit o n. current sink 0 - 0.75 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 circuit 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 7 isolated dc/dc converters 3 6 vdc - 75 v dc input , 12 vdc / 25 a out p ut jun . 1 4 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. output trim equations equations for calculating the trim res istor are shown below. the trim down resistor should be connected between the trim pin and gnd pin . the trim up resistor should be connected between the trim pin and the vout pin . only one of the resistors should be used for any given application. m inimum trim down voltage is 9.6 v maximum trim up voltage is 12.6 v. the total voltage increased by trim and remote sense should not exceed 5 % of the nominal output voltage. note: vo_req=desired (trimmed) output voltage [v] output voltage vo = 12 v ? ? ? ? % 100 _ ? ? ? vo vo req vo delta module vout trim gnd rtrimdown module vout trim gnd rtrimup ? ? ? k delta rtrimdown 22 . 10 511 ? ? ? ? ? ? ? ? ? ? k delta vo delta rtrimup 22 . 10 225 . 1 626 11 . 5 ) 100 (
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 3 6 vdc - 75 v dc input , 12 vdc / 25 a out p ut jun . 1 4 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. remote sense this module has remote sense compensation feature. it can minimize the effects of resistance between module?s output and load in sys tem layout and facilitates accu r ate voltage regulation at load terminals or other s elected point. 1. the remote sense lines carries very little current and hence do not require a large cross - sectional area. 2. this module compensates for a maximum drop of 5 % of the nominal output voltage. 3. if the unit is already trimmed up, the availa ble remote sen se compensation range should be correspondingly reduced. the total voltage increased by trim and remote sense should not exceed 5 % of the nominal output voltage. 4. when using remote sense compensation, all the resistance, parasitic inductanc e and capacitance of the system are incorporated within the feedback loop of this module. it can make an effect on the module's compensation, affecting the stability and dynamic response. a 0.1uf ceramic capacitor can be connected at the point of load to de - couple noise on the sense wires. 5. recommend the connection of remote sense compensation as below figure. there are a resistor rs+ ( 100 ohm) from vo+ to sense+ and a resistor rs - ( 51 ohm)) from vo - to sense - inside of this module. 6. if n ot using remote sense compensation, please connect sense directly to output at module's pin, that is, connect sense+ to vo+ and sense - to vo - at module's pin, the shorter the better. s ee below figure. sense + sense - r s - v o - vo + r s + load sense + sense - r s - vo - v o + r s + load
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 3 6 vdc - 75 v dc input , 12 vdc / 25 a out p ut jun . 1 4 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. mechanical outline 0rq1 - t0t120 & 0rq 1 - t0t12l pin connections pin# function pin size 1 vin (+) 0.04" 2 on/off 0.04" 3 vin ( - ) 0.04" 4 vo ( - ) 0.0 6 " 5 rs ( - ) 0.0 4 " 6 trim 0.04" 7 rs (+) 0.04" 8 vo (+) 0.0 6 "
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 3 6 vdc - 75 v dc input , 12 vdc / 25 a out p ut jun . 1 4 , 20 1 1 bel power inc. , a subsidiary of bel fuse inc. mechanical outline 0rq1 - t0t12 a & 0rq1 - t0t12 b note: this module is recommended and compatible with pb - free wave soldering and must be sold ered 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 m icro inches minimum nickel plate . 2 ) undimensioned components are shown for vi sual 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 connections pin# function pin size 1 vin (+) 0.04" 2 on/off 0.04" 3 vin ( - ) 0.04" 4 vo ( - ) 0.0 6 " 5 vo (+) 0.0 6 "
? 20 11 bel fuse inc. specifications subjec t to change without notice. 0 61 4 11 11 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, suit e 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 , 12 vdc/25 a out p ut output converter j u n. 1 4 , 20 11 bel power inc. , a subsidiary of bel fuse inc. revision history date version changes detail approval 200 8 - 10 - 1 7 a first release hl 2009 - 0 4 - 16 b 1. change t o new format; 2. update the i/o is olation voltage, min efficiency and o utput dc c urrent l imit . hl 2010 - 0 1 - 14 c remove ? preliminary ? jack 201 1 - 06 - 1 4 d add p/n 0rq1 - t0t12a and 0rq1 - t0t12b wi thout trim and remote sense function . jz wang rohs com p liance complies with the euro pean directive 2002/95/ec, calling for the elimination of lead and other hazardous substances from electronic products.

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