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 v dc - 7 5 vdc input 12 v dc / 6 a output may 1 7 , 20 11 bel power inc . , a subsidiary of bel fuse inc. features ? isolated ? over temperature protection ? high efficiency ? ocp/scp ? high power density ? low cost ? fixed frequency ( 3 3 0 khz) ? output voltage trim ? input under - voltage lockout ? positive/negative remote sense ? output over - voltage shutdown ? basic insulation ? pre - bias start up ? remote on/off ? ul60950 - 1 r ecognized (ul/cul) ( p ending ) applications ? networ king ? computers and peripherals ? telecommunications description the 0rcy - 50t 12 x is isolated dc/dc converter that operate s from a wide input range (36 vdc - 7 5 vdc) . this unit will provide up to 72 w of output power. the unit is designed to be highly eff icient and low cost . features include remote on/off, over current protection, over voltage shut down, over temperature protection and under - voltage lockout. this converter is provided in an industry standard 1/8 brick package. part selection output volta ge input voltage max. output current max. output power typical efficiency model number active high model number active low 12 v dc 36 vdc - 7 5 vdc 6 a 72 w 92 % 0rcy - 50t 12 l 0rcy - 50t 120 note : add ?g? suffix at the end of the model number to indicate tray packaging. part number explanation 0 r cy ? 50 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 4 --- series code 5 --- i nput range ( 36 - 75 v) 6 --- output voltage ( 12 v) 7 --- option , ? x ? of the model part number to be 0 - 9, a - z, which will represent the special request of customer. 0r c y - 50t 12 x rohs complian t rev. e
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 v dc - 7 5 vdc input 12 v dc / 6 a output may 1 7 , 20 11 bel power inc . , a subsidiary of bel fuse inc. absolute maximum ratings parameter min typ max unit notes input voltage (continuous) - 0.3 - 80 v remote on/off - 0.3 - 18 v i/o isolation voltage - - 15 00 v input to e ach o utput r esistance 10m - - ohm ambient temperature - 40 - 85 ? c storage temperature - 55 - 125 ? c not e: 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 input voltage 36 48 7 5 v max input current (full load) - - 2.4 a input current (no load) - 50 1 0 0 ma remote off input current - 2 0 30 ma input reflected ripple current (pk - pk) - 2 0 3 0 ma tested with simulated source impedance of 10 uh , 5 hz to 20 mhz ; use a 47 uf/100 v electrolytic cap with esr = 1 ohm max. at 200 k hz at 25 ? c . i 2 t inrush current transient - - 0. 1 a 2 s input f use (not internally) - - 5 a turn - on voltage threshold 33 34 35 v turn - off voltage threshold 31 32 33 v input over voltage l ockout 7 6 7 8 8 0 v note: all specificatio ns are typi cal at 25 ? c unless otherwise stated . output specifications parameter min typ max unit notes output voltage set point 11.76 12. 0 12.24 v load regulation - 12 24 mv line regulation - 12 24 mv regulation over temperature ( - 40deg.c - 85deg.c) - 8 0 12 0 mv ripple and noise (rms) - 12 2 0 mv ripple and noise (pk - pk) - 5 0 80 mv vin=72v, max load on output, 20mhz bw, with 10uf tantalum and 1uf ceramic cap at the output. output current range 0 - 6 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 36 v dc - 7 5 vdc input 12 v dc / 6 a output may 1 7 , 20 11 bel power inc . , a subsidiary of bel fuse inc. o utput specifications (continued) parameter min typ max unit notes output dc current limit 7.0 - 10 a output o ver v oltage c lamp 13.6 - 15.6 v non - latching turn on time - 50 80 ms rise time - 30 40 ms external admissible capacitive load 0 - 1000 uf transient response overshoot - 200 300 mv 50 % ~ 75 % max load settling time - 150 250 us overshoot - 200 300 mv 75 % ~ 50 % max l oad settling time vo= 12 v - 150 250 us di/dt= 0.1 a/us, vin=48 vdc, ta=25 c , with a 1 f ceramic cap and a 10 uf t antalum cap at output. note : all specifications are typical at nominal input, full load at 25c unless noted . general specifications parameter min typ max unit notes efficiency 90 92 - % measured at vin = 48 v , full load switching frequency 310 330 350 khz isolation capacitance - 15 00 - pf remote sense compensation - - 10 % the total voltage increased by trim and r emote sense should not exceed 1 0 %vo . output voltage trim range 9.6 - 13.2 v over temperature prot ection - 120 - ? c weight - 40 - g mtbf tbd - calculated per bell core s r - 332 ( io= 80%load , t a = 25 ? c) dimensions inches (l w h) millimeters (l w h) 2.30 x 0.896 x 0.490 58.41 x 22.76 x 12.44 - note : all specifications are typical at 25 ? c unless otherwise stated. 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 0rcy - 50t 12 l. the remote on/off pin op en, unit o ff . signal low (unit o ff ) - 0. 3 - 0.8 v signal high (unit o n ) active high 2.4 - 18 v 0rcy - 50t 120 . the remote on/off pin op en, unit o n . current sink 0 - 1 ma
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 v dc - 7 5 vdc input 12 v dc / 6 a output may 1 7 , 20 11 bel power inc . , a subsidiary of bel fuse inc. output trim equations trim resistor calculate equations for calculating the trim resistor are shown below. the trim down resistor should be connected between the trim pin and sense( - ) pin . the trim up resistor should be connected between the trim pin and the sense(+) pin . only one of the resistors should be used for any given application. note: vo_req=desired (trimmed ) output voltage [v] output voltage vo= 12 v ? ? ? ? % 100 _ ? ? ? vo vo req vo delta ? ? ? ? ? k delta rtrimdown 22 . 10 511 ? ? ? ? ? ? ? ? ? ? k delta delta vo delta rtrimup ) 22 . 10 511 225 . 1 11 . 5 ) 100 ( ( module sense(+) trim sense(-) rtrimup module sense(+) trim sense(-) rtrimdown 9.8 10.02 10.24 10.46 10.68 10.9 11.12 11.34 11.56 11.78 12 0 40 80 120 160 200 240 280 320 360 400 adjusted output voltage vo,adj (v) t r i m r e s i s t o r v a l u e r t r i m _ d o w n ( k o h m ) 12 12.12 12.24 12.36 12.48 12.6 12.72 12.84 12.96 13.08 13.2 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 adjusted output voltage vo,adj(v) t r i m r e s i s t o r v a l u e , r t r i m _ u p ( k o h m )
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 v dc - 7 5 vdc input 12 v dc / 6 a output may 1 7 , 20 11 bel power inc . , a subsidiary of bel fuse inc. output trim equations (continued) trim voltage calculate equations for calculating the trim voltage are shown below. vtrim is the required voltage between trim and sense( - ) . efficiency data efficient curve 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 0a 0.6a 1.5a 3a 4.5a 6a output current (a) e f f i c i e n t 36 v 48 v 75 v module sense (+) trim sense ( - ) ] )[ 24 . 1 464 . 2 _ ( v vo req vo vtrim ? ? ?
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 v dc - 7 5 vdc input 12 v dc / 6 a output may 1 7 , 20 11 bel power inc . , a subsidiary of bel fuse inc. ripple and noise waveforms 36 vdc input, 12 vdc/ 6 a output 48 vdc input, 12 vdc/ 6 a output 75 vdc input, 12 vdc/ 6 a output note: ripple and noise at full lo ad, 0 - 20 mhz bw, ta=25 deg c , with a 0.1uf ceramic cap and a 10 uf tantalum cap at output.
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 v dc - 7 5 vdc input 12 v dc / 6 a output may 1 7 , 20 11 bel power inc . , a subsidiary of bel fuse inc. thermal derating curve vin=48 v, with maximum junction temperature of semiconductors derated to 120 degree c. transient response waveform s 50% - 75 % load 75 % - 5 0% load note: transients at vin=48 v, di/dt= 0.1 a/us@ta=25
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 v dc - 7 5 vdc input 12 v dc / 6 a output may 1 7 , 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 m icro inches minimu m nickel plate . 2 ) undimensioned components are shown for visual 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 name function pin dia 1 vin+ positive input voltage 0.040 ?? 2 on/off input to turn converter on and off, referenced to vin - 0.040 ?? 3 vin - negative input voltage 0.040 ?? 4 vou t - negative output vo ltage 0.062 ?? 5 s ense - negative remote sense 0.040 ?? 6 trim output voltage trim 0.040 ?? 7 s ense+ positive output voltage 0.040 ?? 8 vout+ positive output voltage 0.062 ?? notes: 1. pin 5 must be connected to vout - . 2. leave pin 6 open for nominal voltage . 3. pin 7 must be connected to vout+ .
? 20 1 1 bel fuse inc. specifications subject to change without notice. 0 517 11 9 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 36 vdc - 7 5 vdc input 12 v dc / 6 a output output converter may 1 7 , 20 1 1 bel power inc . , a subsidiary of bel fuse inc. revision history date revis ion changes detail app roval 2011 - 0 5 - 17 e add trim equation for trim voltage. 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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