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 48 vdc input 12 vdc /12 a output sep. 24, 2010 bel power inc., a subsidiary of bel fuse inc. features ? isolated ? output over-voltage shutdown ? high efficiency ? ocp/scp ? high power density ? over temperature protection ? fixed frequency (300 khz) ? output voltage trim ? low cost ? remote on/off ? input under-voltage lockout ? positive/negative remote sense ? basic insulation ? 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 0rcy-c2t12x is isolated dc/dc converter that operates from a nominal 48 vdc source. this unit will provide up to 144 w of output power from a nominal 48 vdc input. this unit is designed to be highly efficient and low cost. features include remote on/off, over current protection and under-voltage lockout. this converter is provided in an industry standard eighth brick package. part selection output voltage input voltage max. output current max. output power typical efficiency model number active high model number active low 12 vdc 36 vdc - 75 vdc 12 a 144 w 93% 0rcy-c2t120 0rcy-c2t12l notes: add ?g? suffix at the end of the model number to indicate tray packaging. part number explanation 0 r cy ? c2 t 12 x 1 2 3 4 5 6 7 1---through hole 2---rohs 6, change ?r? to ?7? means rohs 5 3---series name 4---series code 5---input range (36-75v) 6---output voltage 12v 7--- suffix 0rcy-c2t12x rohs com p liant rev.c
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 48 vdc input 12 vdc /12 a output sep. 24, 2010 bel power inc., a subsidiary of bel fuse inc. absolute maximum ratings parameter min typ max unit notes continuous input voltage -0.3 - 80 v input transient voltage - - 100 v 100 ms maximum remote on/off -0.3 - 18 v input to baseplate isolation voltage 1500 - - v output to baseplate isolation voltage 500 - - v i/o isolation voltage 1500 - - v ambient temperature -40 - 85 c storage temperature -55 - 125 c note: ratings used beyond the maximum ratings may caus e 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) - - 5.0 a input current (no load) - 60 120 ma remote off input current - 10 15 ma input reflected ripple current (rms) - 5 10 ma input reflected ripple current (pk-pk) - 25 40 ma tested with simulated source impedance of 10 uh, 5 hz to 20 mhz; use a 100 uf/100 v electrolytic capacitor with esr = 1 ohm max. at 200 khz at 25 c. i 2 t inrush current transient - 0.1 0.5 a 2 s turn-on voltage threshold 33 34 36 v turn-off voltage threshold 31 32 34 v note: all specifications are typical at 25 c unless otherwise stated. output specifications parameter min typ max unit notes output voltage set point 11.76 12 .00 12.24 v vin=48v, io=50% load load regulation - 12 24 mv line regulation - 12 24 mv regulation over temperature (-40deg.c-85deg.c) - 30 60 mv total regulation - 60 100 mv ripple and noise (pk-pk) - 90 150 mv ripple and noise (rms) - 30 50 mv 0-20 mhz bw, with a 1f ceramic capacitor and a 10uf tantalum cap at output. output current range 0 - 12 a output dc current limit 13 15 17 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 48 vdc input 12 vdc /12 a output sep. 24, 2010 bel power inc., a subsidiary of bel fuse inc. output specifications (continued) parameter min typ max unit notes short circuit surge transient - 2 4 a 2 s turn on time - 60 100 ms overshoot at turn on - 0 - % output capacitance 0 - 680 uf transient response overshoot - 400 600 mv v25%~50% of max load settling time - 200 300 us overshoot - 400 600 mv v50%~25% of max load settling time - 200 300 us 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 inpu t, full load at 25c unless otherwise stated. general specifications parameter min typ max unit notes efficiency 91 93 - % vin=48v, full load switching frequency 270 300 330 khz isolation capacitance - 3900 - pf output voltage trim range 80 - 110 %vo remote sense compensation - - 10 %vo the total voltage increased by trim and remote sense should not exceed 10%vo. over temperature protection - 125 - c over voltage protection - 125 - % vin=48v, full load, in hiccup mode weight - 47 - g fit tbd - calculated per bell core sr-332 (vin=48 v, vo=12 v, io=12 a, t a = 25 c, fit=10 9 /mtbf) dimensions inches (l w h) millimeters (l w h) 2.30 x 0.90 x 0.50 58.41 x 22.91 x 12.70 - note : all specifications are typical at 25 c unless otherwise stated. control specifications parameter min typ max unit notes remote on/off signal low (unit on) -0.3 - 0.8 v signal high (unit off) active low 2.4 - 18 v 0rcy-c2t12l. the remote on/off pin open, unit off. signal low (unit off) -0.3 - 0.8 v signal high (unit on) active high 2.4 - 18 v 0rcy-c2t120. the remote on/off pin open, unit on. 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 48 vdc input 12 vdc /12 a output sep. 24, 2010 bel power inc., a subsidiary of bel fuse inc. efficiency data efficiency curve 70% 72% 74% 76% 78% 80% 82% 84% 86% 88% 90% 92% 94% 1.20 3.00 6.00 9.00 12.00 output current (a) efficienc y 36 v 48 v 56 v 75 v thermal derating curve with maximum junction temperature of semiconductors derated to 120 degree c vin=48 v vin=56 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 48 vdc input 12 vdc /12 a output sep. 24, 2010 bel power inc., a subsidiary of bel fuse inc. ripple and noise waveform 48 vdc input, 12.0 vdc/12 a output note: ripple and noise at full load, 0-20 mhz bw, ta=25 deg c, with a 1uf ceramic cap and a 10 uf tantalum cap at output. transient response waveforms vout=12.0 v, 50%-25% load transient vout=12.0 v, 25%-50% load transient note: transient response at vin=48 v, di/dt=0.1 a/us, external 10 uf tantalum cap and 1uf ceramic cap at the output, 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 48 vdc input 12 vdc /12 a output sep. 24, 2010 bel power inc., a subsidiary of bel fuse inc. output trim equations equations for calculating the trim resistor 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. note: vo_req=desired (trimmed) output voltage [v] output voltage vo=12.000 v [] ? = k delta rtrimdown 22 . 10 511 module vout trim gnd rtrimdown module vout trim gnd rtri mup [] ? ? ? ? ? + = k delta vo delta rtrimup 22 . 10 225 . 1 626 11 . 5 ) 100 ( () [] % 100 _ ? = vo vo req vo delta 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) trim resistor value,rtrim_up(kohm) 9.6 9.84 10.08 10.32 10.56 10.8 11.04 11.28 11.52 11.76 12 0 40 80 120 160 200 240 280 320 360 400 adjusted output voltage vo,adj (v) trim resistor value rtrim_down(kohm)
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 48 vdc input 12 vdc /12 a output sep. 24, 2010 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 than 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); tolerances: x.xx +/-0.0 2 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm). pin connections pin name pin dia 1 vin+ 0.040?? 2 on/off 0.040?? 3 vin- 0.040?? 4 vout- 0.062?? 5 sense- 0.040?? 6 trim 0.040?? 7 sense+ 0.040?? 8 vout+ 0.062??
? 2010 bel fuse inc. specifications subject to change without notice. 092410 8 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 48 vdc input 12 vdc /12 a output sep. 24, 2010 bel power inc., a subsid iary of bel fuse inc. revision history date revision changes detail approval 2007-06-29 pa first release. hf fan 2009-06-18 b 1. add 100ms transient and input/output pin to heatsink voltage. 2. change mechanical outline. hf fan 2010-09-24 c add efficiency data and td chart in 56vin condition. jz wang rohs compliance complies with the european directive 2002/95/ec , calling for the elimin ation of lead and other hazardous substances from electronic products.
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