bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com isolated dc/dc converters 36 vdc - 75 vdc input 12 vdc /6 a output ? isolated ? output over-voltage shutdown ? high efficiency ? ocp/scp ? high power density ? over temperature protection ? fixed frequency (330 khz) ? low cost ? input under-voltage lockout ? output voltage trim ? pre-bias start up ? ul60950-1 recognized (ul/cul) ? positive/negative remote sense ? basic insulation ? remote on/off description the 0rcy-50t12x is isolated dc/dc converter that operates from a wide input range (36 vdc - 75 vdc). this unit will provide up to 72 w of output power. the unit is designed to be highly efficient 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 voltage input voltage max. output current max. output power typical efficiency model number active low model number active high 12 vdc 36 vdc - 75 vdc 6 a 72 w 92% 0rcy-50t12l 0RCY-50T120 notes: 1. all part numbers above indicate rohs 6. change the second letter "r" to "7" for rohs 5 part numbers. 2. add ?g? suffix at the end of the model number to indicate tray packaging. absolute maximum ratings parameter min typ max notes input voltage (continuous) -0.3 v - 80 v remote on/off -0.3 v - 18 v i/o isolation voltage - - 1500 v input to each output resistance 10m ohm - - ambient temperature -40 c - 85 c storage temperature -55 c - 125 c input specifications parameter min typ max notes input voltage 36 v 48 v 75 v max input current (full load) - - 2.4 a input current (no load) - 50 ma 100 ma remote off input current - 20 ma 30 ma input reflected ripple current (pk-pk) - 20 ma 30 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 khz at 25 c. i 2 t inrush current transient - - 0.1 a 2 s input fuse (not internally) - - 5 a 0rcy-50t12x rohs com p liant rev.d
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com isolated dc/dc converters 36 vdc - 75 vdc input 12 vdc /6 a output input specifications (continued) parameter min typ max notes turn-on voltage threshold 33 v 34 v 35 v turn-off voltage threshold 31 v 32 v 33 v input over voltage lockout 76 v 78 v 80 v note: all specifications are typical at 25 c unless otherwise stated. output specifications parameter min typ max notes output voltage set point 11.76 v 12.0 v 12.24 v load regulation - 12 mv 24 mv line regulation - 12 mv 24 mv regulation over temperature (-40deg.c-85deg.c) - 80 mv 120 mv ripple and noise (rms) - 12 mv 20 mv ripple and noise (pk-pk) - 50 mv 80 mv vin=72v, max load on output, 20mhz bw, with 10uf tantalum and 1uf ceramic ca p at the out p ut. output current range 0 a - 6 a output dc current limit 7.0 a - 10 a output over voltage clamp 13 .6 v - 15.6 v non-latching turn on time - 50 ms 80 ms rise time - 30 ms 40 ms external admissible capacitive load 0 uf - 1000 uf transient response 50% ~ 75% ~ 50% of max load - 200 mv 300 mv settling time - 150 mv 250 mv di/dt=0.1 a/us, vin=48 vdc, ta=25 c, with a 1 f ceramic cap and a 10 uf tantalum cap at output. note: all specifications are typical at 25 c unless otherwise stated. general specifications parameter min typ max notes efficiency 90% 92% - measured at vin=48 v, full load. switching frequency 310 khz 330 khz 350 khz isolation capacitance - 1500 pf - remote sense compensation - - 10% the total voltage increased by trim and remote sense should not exceed 10%vo. output voltage trim range 9.6 v - 13.2 v over temperature protection - 120 c - mtbf tbd calculated per bell core sr-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 weight - 40 g - 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 isolated dc/dc converters 36 vdc - 75 vdc input 12 vdc /6 a output control specifications parameter min typ max notes remote on/off signal low (unit on) -0.3 v - 0.8 v signal high (unit off) active low 2.4 v - 18 v 0rcy-50t12l. the remote on/off pin open, unit off. signal low (unit off) -0.3 v - 0.8 v signal high (unit on) active high 2.4 v - 18 v 0RCY-50T120. the remote on/off pin open, unit on. current sink 0 ma - 1 ma output trim equations 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(-) rtrimdo wn
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com isolated dc/dc converters 36 vdc - 75 vdc input 12 vdc /6 a output 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) efficien 36 v 48 v 75 v thermal derating curve vin=48 v, with maximum 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 isolated dc/dc converters 36 vdc - 75 vdc input 12 vdc /6 a output 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 load, 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 isolated dc/dc converters 36 vdc - 75 vdc input 12 vdc /6 a output transient response waveforms 50%-75% load transients at vin=48 v, di/dt=0.1 a/us@ta=25 75%-50% load transients at vin=48 v, di/dt=0.1 a/us@ta=25
? 2008 bel fuse inc. specifications subject to change without notice. 090308 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 - 75 vdc input 12 vdc /6 a output mechanical outline rohs compliance complies with the european directive 2002/95/ec , calling for the elimination of lead and other hazardous substances from electronic products. 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 vout- negative output voltage 0.062?? 5 sense- negative remote sense 0.040?? 6 trim output voltage trim 0.040?? 7 sense+ 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+.
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