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 48 vdc input 3.3 vdc/50 a, 5.0 vdc/30 a output ? isolated ? output over voltage shutdown ? high efficiency ? ocp/scp ? high power density ? over temperature protection ? low cost ? remote on/off ? fixed frequency (330 khz) ? output voltage trim ? input under/over voltage lockout ? ul60950-1 recognized (ul/cul) ? positive/negative remote sense description the 0rhb-c5t series are isolated dc/dc converters that operate from a nominal 48 vdc source. this unit will provide up to 165 w of output power from a nominal 48 vdc input. this unit is designed to be highly efficient and low cost. it is provided in an industry standard half-brick package. part selection output voltage input voltage max. output current max. output power typical efficiency model number active high model number active low 5.0 v 48 v 30 a 150 w 93.0% 0rhb-c5t050 0rhb-c5t05l 3.3 v 48 v 50 a 165 w 92.5% 0rhb-c5t033 0rhb-c5t03l notes: 1. add ?g? suffix at the end of the model number to indicate tray packaging. 2. all part numbers above indicate rohs 6. change the second letter "r" to "7" for rohs 5 part numbers. 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 - - 2000 v ambient temperature -40 c - 85 c storage temperature -55 c - 125 c input specifications parameter min typ max notes input voltage 36v 48 v 75 v input current (full load) vo=5.0 v vo=3.3 v - - - - 5.0 a 5.2 a input current (no load) - 120 ma 180 ma remote off input current 5 ma 20 ma input reflected ripple current (pk-pk) - 20 ma 40 ma input reflected ripple current (rms) - 5 ma 10 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 - 0.05 a 2 s0.1 a 2 s turn-on voltage threshold 31 v - 35 v turn-off voltage threshold 29 v - 33 v input over voltage threshold 76 v - 80 v note : all specifications are typical at 25 c unless otherwise stated. 0rhb-c5t series rohs compliant rev.a
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 48 vdc input 3.3 vdc/50 a, 5.0 vdc/30 a output output specifications parameter min typ max notes output voltage set point vo=5.0 v vo=3.3 v 4.925 v 3.250 v 5.000 v 3.300 v 5.075 v 3.350 v vin=48 v, io=50% load line regulation vo=5.0 v vo=3.3 v - - 5 mv 10 mv 10 mv 20 mv c to +85 c) vo=5.0 v vo=3.3 v - - 45 mv 30 mv 75 mv 50 mv output current vo=5.0 v vo=3.3 v 0 a 0 a - - 30 a 50 a current limit threshold vo=5.0 v vo=3.3 v 32 a 55 a 38 a 65 a 45 a 75 a short circuit surge transient - 3 a 2 s 5 a 2 s ripple and noise (rms) vo=5.0 v vo=3.3 v - - 25 mv 15 mv 50 mv 30 mv ripple and noise (pk-pk) vo=5.0 v vo=3.3 v - - 70 mv 55 mv 140 mv 100 mv test conditions: 0-20mhz bw, with a 1uf ceramic capacitor and a 10uf tantalum capacitor at the output. turn on time - 15 ms 20 ms overshoot at turn on - 0% 5% output capacitance vo=5.0 v vo=3.3 v 0 uf 0 uf - - 10000 uf 20000 uf transient response overshoot - 250 mv 400 mv 75% ~ 50% max load settling time - 250 us 400 us overshoot - 250 mv 400 mv 50% ~ 75% max load settling time vo=5.0 v - 250 us 400 us overshoot - 100 mv 200 mv 75% ~ 50% max load settling time - 200 us 300 us overshoot - 100 mv 200 mv 50% ~ 75% max load settling time vo=3.3 v - 200 us 300 us test conditions: di/dt = 0.1 a/us, vin=48 v with a 1 uf ceramic capacitor and a 10 uf tantalum capacitor at the output. note: all specifications are typical at nominal input, full load at 25 c unless noted.
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 48 vdc input 3.3 vdc/50 a, 5.0 vdc/30 a output general specifications parameter min typ max notes efficiency vo=5.0 v vo=3.3 v 90% 90% 93.0% 92.5% - - vin=48v, full load , ta=25 c switching frequency 300 khz 330 khz 360 khz isolation capacitance - 1500 pf - output voltage trim range 80% vo - 110% vo over temperature protection - 120 c - over voltage protection 1 - 130% vo - input to output isolation voltage 2 - - 2000 v mtbf tbd calculated per bell core sr-332 (i o = nominal; t a = 25 c) dimensions inches millimeters 2.28 x 2.4 x 0.42 57.51 x 60.98 x 10.67 weight - 76 g - notes : all specifications are typical at 25 c unless otherwise stated. 1. ovp is tested under 48 vin and full load with photo coupler short. th e output will be latched off if the output voltage exceeds over voltage specification. to turn the converter on requires either cycling the on/off pin or power to the converter. 2. isolation between input and output is basic isolation, test duration is 60 se conds. 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 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 the remote on/off pin open, unit on. output trim equations equations for calculating the trim resistor (in k ? ) are shown below. the trim down resistor should be connected between the trim pin and ground pin. the trim up resistor should be connected between the trim pin and the vout. only one of the resistors should be used for any given application. notes : vo_req=desired(trimmed) output voltage[v] output voltage vo=3.304 v for 3.3 v; vo=5.008 v for 5 v. [] ? ? ? ? + = k delta vo delta rtrimup 2 225 . 1 5 . 122 ) 100 ( [] ? = k delta rtrimdown 2 100 () [] % 100 _ ? = vo vo req vo delta module vout trim gnd rtrimdown module vout trim gnd rtrimu p
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 48 vdc input 3.3 vdc/50 a, 5.0 vdc/30 a output efficiency data efficiency curve 70% 74% 78% 82% 86% 90% 94% 5 101520253035404550 output current (a) efficienc y 36 v 48 v 75 v efficiency curve 70% 74% 78% 82% 86% 90% 94% 5 1015202530 output current (a) efficiency 36 v 48 v 75 v 0rhb-c5t03x 0rhb-c5t05x thermal derating curves 0rhb-c5t03x 0rhb-c5t05x
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 48 vdc input 3.3 vdc/50 a, 5.0 vdc/30 a output ripple and noise waveforms ripple and noise at full load 3.3 v/50 a output ripple and noise at full load 5.0 v/30 a output note: ripple and noise at 48 v input, with a 1 uf ceramic capacitor and a 10 uf tantalum capacitor at the output and ta=25 deg c,. transient response waveforms vout=3.3 v, 50% to 75% load transients vout=3.3 v, 75% to 50% load transients vout=5.0 v, 50% to 75% load transients vout=5.0 v, 75% to 50% load transients note: transient response is tested at di/dt=0.1 a/us (vo= 3.3 v), di/dt=0.5 a/us (vo=5.0 v), vin=48 v, ta=25c, with a 1 f ceramic capacitor and a 10 f tantalum capacitor at the output.
? 2007 bel fuse inc. specifications subject to change without notice. 030307 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 3.3 vdc/50 a, 5.0 vdc/30 a output mechanical outline rohs compliance complies with the european directive 2002/95/ec , calling for the elimin ation of lead and other hazardous substances from electronic products. pin connections pin# function pin size pin# function pin size 1 -input 0.04" 6 n/a 2 n/a 7 +sense 0.04" 3 on/off 0.04" 8 trim 0.04" 4 +input 0.04" 9 -sense 0.04" 5 +output 0.08" 10 n/a 11 -output 0.08"
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