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 1.2 vdc /50 a output aug. 10, 2010 bel power inc., a subsidiary of bel fuse inc. features ? isolated ? input under/over voltage lockout ? high efficiency ? output voltage trim ? fixed frequency (300 khz) ? basic insulation ? high power density ? ocp/scp ? low cost ? over temperature protection ? remote on/off ? positive/negative remote sense ? output over-voltage protection with auto-recovery ? 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-c2tv2x is isolated dc/dc converter that operates from a nominal 48 vdc source. this unit will provide up to 60 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 1.2 vdc 48 vdc 50 a 60 w 86% 0RCY-C2TV20 0rcy-c2tv2l notes: add ?g? suffix at the end of the model number to indicate tray packaging. part number explanation 0 r cy ? c2 t v2 x 1 2 3 4 5 6 7 1---through hole mount 2---rohs 6, change ?r? to ?7? means rohs 5 3---series name 4---series code 5--- input range (36-75v) 6---output voltage (1.2v) 7---suffix 0rcy-c2t v 2x 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 1.2 vdc /50 a output aug. 10, 2010 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 input voltage (transient) - - 100 v 100ms maximum remote on/off -0.3 - 18 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 input voltage 36 48 75 v input voltage transient rate - - 7 v/ms input current (full load) - - 3.0 a input current (no load) - - 60 ma remote off input current - 10 15 ma input reflected ripple current (rms) - 5 10 ma input reflected ripple current (pk-pk) - - 30 ma with simulated source impedance of 10 uh, 5hz to 20mhz. use a 100 uf/100 v electrolytic cap with esr=1 ohm max, at 200 khz@25c. i 2 t inrush current transient - - 0.1 a 2 s turn-on voltage threshold 33 - 35.5 v turn-off voltage threshold 32 - 34.5 v caution: this converter is not internally fused. an input line fuse must be used in application. note: all specifications are typical at 25 c unless otherwise stated. output specifications parameter min typ max unit notes output voltage set point 1.176 1.20 1.224 v vin=48 v, io=50%load load regulation - 3 6 mv line regulation - 3 5 mv regulation over temperature (-40deg.c-85deg.c) - 4 9 mv total regulation - 10 19 mv ripple and noise (rms) - - 10 mv ripple and noise (pk-pk) - - 50 mv vin=75 v, 0-20mhz bw, with a 1f ceramic capacitor and a 100 f tantalum cap at output. output current range 0 - 50 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 1.2 vdc /50 a output aug. 10, 2010 bel power inc., a subsidiary of bel fuse inc. output specifications (continued) parameter min typ max unit notes output dc current limit 52 - 62 a short circuit surge transient - 2 4 a 2 s turn on time - - 40 ms overshoot at turn on - 0 - % output capacitance 0 - 20,000 uf transient response overshoot - - 50 mv 25% ~ 50% max load settling time - - 250 us overshoot - - 50 mv 50% ~ 25% max load settling time vo= 1.2v - - 250 us di/dt=0.1a/us, vin=48vdc, with a 1f ceramic capacitor and a 330 f esr 50mohm cap at 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 (full load) 84 86 - % efficiency (half load) 85 89 - % measured at vin=48 v switching frequency 270 300 330 khz isolation capacitance - 2200 - pf over voltage trim range 90 - 110 % remote sense compensation - - 10 % the total voltage increased by trim and remote sense should not exceed 10%vo. over temperature protection - 125 - c over voltage protection 1.39 - 1.6 v weight - 28 - g fit tbd - calculated per bell core sr-332 (vin=48v, io=80%load, t a = 25 c, fit=10 9 /mtbf) dimensions inches (l w h) millimeters (l w h) 2.30 x 0.90 x 0.40 58.42 x 22.78 x 10.26 - 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 48 vdc input 1.2 vdc /50 a output aug. 10, 2010 bel power inc., a subsidiary of bel fuse inc. remote on/off parameter min typ max unit notes signal low (unit on) -0.7 - 0.8 v signal high (unit off) active low 2.4 - 18 v the remote on/off pin open, unit off. signal low (unit off) -0.7 - 0.8 v signal high (unit on) active high 2.4 - 18 v the remote on/off pin open, unit on. current sink 0 - 1 ma efficiency data 70% 72% 74% 76% 78% 80% 82% 84% 86% 88% 90% 92% 94% 5.00 12.50 25.00 37.50 50.00 output current (a) efficienc y 36 v 48 v 75 v thermal derating curve vin=48v, with maximum j unction tem p erature of semiconductors derated to 120c
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 1.2 vdc /50 a output aug. 10, 2010 bel power inc., a subsidiary of bel fuse inc. ripple and noise waveform 75vdc input, 1.2vdc/50a output note: ripple and noise at full load, with a 1uf ceramic cap and a 100uf tantalum cap at output, and ta=25 deg c. transient response waveforms note: transient response at di/dt=0.1a/us, vin=48vdc, ta= 25c, with a 1f ceramic capacitor and 330f esr 50mohm cap at output. vout=1.2v, 50% to 75% load transients vout=1.2v, 75% to 50% load transients
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 1.2 vdc /50 a output aug. 10, 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 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. connecting an external resistor between the trim pin and the sense (-) pin decreases the output voltage set point. connecting an external resistor between the trim pin and the sense (+) pin increases the output voltage set point. note: vo_req=desired (trimmed) output voltage [v] output voltage vo=1.2 v remote sense minimizes the effects of distribution losses by regulating the voltage at the remote-sense connections. the voltage between the remote-sense pins and the output terminals must not exceed the output voltage sense range: 10% x vout. if not using the remote-sense feature to regulate the output voltage at the point of load, connect sense (+) to vout and sense (-) to gnd at the module. the tracks, that connect the sense pins to the load, must have a resistance << than 10 ohm (for example maximum 100 mohm). [] ? = k delta rtrimdown 22 . 10 511 module vout trim gnd rtrimdown [] (10 0 ) 5.11 511 10.22 0.6125 delta vo rtrimup k delta delta +?? =?? ? module vout trim gnd rtri mup () [] % 100 _ ? = vo vo req vo delta 0.96 0.98 1.01 1.03 1.06 1.08 1.1 1.13 1.15 1.18 1.2 0 40 80 120 160 200 240 280 320 360 400 adjusted outp ut voltage vo,adj (v) trim resistor value rtrim_down(kohm) 1.2 1.21 1.22 1.24 1.25 1.26 1.27 1.28 1.3 1.31 1.32 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 adjusted outp ut voltage vo,adj(v) trim resistor value,rtrim_up(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 1.2 vdc /50 a output aug. 10, 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 rc 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. 081010 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 1.2 vdc /50 a output aug. 10, 2010 bel power inc., a subsid iary of bel fuse inc. revision history date revision changes detail approval 2008-04-21 pa first release hf fan 2008-11-25 b update load regulation, output noise, ocp, turn on time, transient, td, nr, tr, md and trim down hf fan 2010-08-10 c update tr, cover, td, md and no load input current 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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