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, 12 vdc/8.35 a, 5 vdc/20 a, 3.3 vdc/25 a, 1.2-2.5 vdc/30 a outputs ? isolated ? output over voltage shutdown ? high efficiency ? ocp/scp ? high power density ? over temperature protection ? low cost ? remote on/off ? input under voltage lockout ? output voltage trim ? fixed frequency (285 khz) ? input over voltage lockout ? active low/high (option) ? positive/negative remote sense ? basic isolation ? safety approval to ul60950-1 (ul/cul) description the 0rqb-c0u series are isolated dc/dc converters that operate from a nominal 48 vdc source. these units will provide up to 100 w of output power from a nominal 48 vdc input. these units are designed to be highly efficient and low cost. typical efficiency of 12 vdc output at 48 vdc input at full load is 91%. features include remote on/off, over current protection and under-voltage lockout. these converters are provided in an industry standard quarter 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 18 vdc - 75 vdc 8.35 a 100 w 91% 0rqb-c0u120 0rqb-c0u12l 5.0 vdc 18 vdc - 75 vdc 20 a 100 w 90% 0rqb-c0u050 0rqb-c0u05l 3.3 vdc 18 vdc - 75 vdc 25 a 82.5 w 90% 0rqb-c0u033 0rqb-c0u03l 2.5 vdc 18 vdc - 75 vdc 30 a 75 w 89.5% 0rqb-c0u025 0rqb-c0u02l 1.8 vdc 18 vdc - 75 vdc 30 a 54 w 85% 0rqb-c0uv80 0rqb-c0uv8l 1.5 vdc 18 vdc - 75 vdc 30 a 45 w 83% 0rqb-c0uv50 0rqb-c0uv5l 1.2 vdc 18 vdc - 75 vdc 30 a 36 w 80% 0rqb-c0uv20 0RQB-C0UV2L 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 -0.3 v - 80 v no operating input voltage (continuous) - - 75 v operating 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 note: all specifications are typical at nominal input, full load at 25 c unless noted. 0rqb-c0u series rohs com p liant preliminary 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, 12 vdc/8.35 a, 5 vdc/20 a, 3.3 vdc/25 a, 1.2-2.5 vdc/30 a outputs input specifications parameter min typ max notes input voltage 18 v 48 v 75 v input current (full load) v o =12 v v o =5.0 v v o =3.3 v v o =2.5 v v o =1.8 v v o =1.5 v v o =1.2 v - - - - - - - - - - - - - - 7.0 a 7.0 a 6.0 a 5.5 a 4.0 a 3.5 a 3.0 a input current (no load) - 100 ma 180 ma remote off input current 10 ma 15 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 bw; use a 0.47 uf/100 v ceramic cap and a 100 uf /100 v electrolytic cap 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 16.5 v 17.0 v 17.5 v turn-off voltage threshold 15.5 v 16.0 v 16.5 v input over voltage lockout 76 v 78 v 80 v note: all specifications are typical at nominal input, full load at 25 c unless noted. output specifications parameter min typ max notes output voltage set point v o =12 v v o =5.0 v v o =3.3 v v o =2.5 v v o =1.8 v v o =1.5 v v o =1.2 v 11.820 v 4.925 v 3.251 v 2.455 v 1.773 v 1.448 v 1.182 v 12.00 v 5.00 v 3.30 v 2.50 v 1.80 v 1.50 v 1.20 v 12.180 v 5.075 v 3.360 v 2.545 v 1.827 v 1.523 v 1.218 v vin=48 v, io=50% full load line regulation v o =12 v v o =5.0 v v o =3.3 v v o =2.5 v v o =1.2 v-1.8 v - - - - - 24 mv 10 mv 4 mv 4 mv 120 mv 25 mv 15 mv 10 mv v o =12 v v o =5.0 v v o =3.3 v -2.5 v v o =1.2 v -1.8 v - - - - 30 mv 10 mv 8 mv 5 mv 80 mv 25 mv 15 mv 10 mv regulation over temperature (-40 c to +85 c) v o =12 v v o =5.0 v v o =3.3 v v o =2.5 v v o =1.8 v-1.2 v - - - - - 60 mv 40 mv 30 mv 20 mv 15 mv 100 mv 65 mv 50 mv 50 mv 30 mv
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, 12 vdc/8.35 a, 5 vdc/20 a, 3.3 vdc/25 a, 1.2-2.5 vdc/30 a outputs output specifications (continued) parameter min typ max notes output current range v o =12 v v o =5.0 v v o =3.3 v v o =1.2 v -2.5 v 0 a 0 a 0 a 0 a - - - - 8.35 a 20 a 25 a 30 a current limit threshold v o =12 v v o =5.0 v v o =3.3 v v o =2.5 v v o =1.2 v -1.8 v 9.2 a 24 a 27 a 35 a - 10.5 a 26 a 32 a 40 a 36 a 13 a 30 a 35 a 45 a - short circuit surge transient - 3 a 2 s 5 a 2 s vin=48 v ; ripple and noise (rms) v o =12 v v o =5.0 v v o =3.3 v -2.5 v v o =1.2 v -1.8 v - - - - 30 mv 25 mv 20 mv 15 mv 50 mv 40 mv 40 mv 30 mv vin=24 v ; ripple and noise (rms) v o =12 v v o =5.0 v v o =3.3 v v o =1.2 v -2.5 v - - - - 25 mv 20 mv 15 mv 10 mv 40 mv 30 mv 25 mv 20 mv vin=48 v ; ripple and noise (pk-pk) v o =12 v v o =5.0 v v o =3.3 v-2.5 v v o =1.2 v-1.8 v - - - - 100 mv 75 mv 50 mv 40 mv 150 mv 120 mv 100 mv 80 mv vin=24 v ; ripple and noise (pk-pk) v o =12 v v o =5.0 v v o =3.3 v v o =2.5 v v o =1.2 v-1.8 v - - - - - 75 mv 50 mv 35 mv 30mv 25 mv 120 mv 100 mv 70 mv 60 mv 50 mv test conditions: 0-20 mhz bw, with a 1 uf ceramic capacitor and a 10 uf tantalum capacitor at the output. turn on time 10 ms - 100 ms overshoot at turn on - 0% 5% output capacitance v o =12.0 v v o =5.0 v v o =3.3 v v o =1.2 v-2.5 v 0 uf 0 uf 0 uf 0 uf - - - - 1200 uf 6800 uf 15000 uf 20000 uf transient response overshoot - 360 mv 480 mv 50% ~ 75% max load settling time - 100 us 250 us overshoot - 360 mv 480mv 75% ~ 50% max load settling time v o =12.0 v - 150 us 250 us overshoot - 200 mv 300 mv 50% ~ 75% max load settling time - 100 us 150 us overshoot - 200 mv 300 mv 75% ~ 50% max load settling time v o =5.0 v - 100 us 150 us overshoot - 150 mv 200 mv 50% ~ 75% max load settling time - 100 us 100 us overshoot - 150 mv 200 mv 75% ~ 50% max load settling time v o =3.3 v - 100 us 100 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.
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, 12 vdc/8.35 a, 5 vdc/20 a, 3.3 vdc/25 a, 1.2-2.5 vdc/30 a outputs output specifications (continued) parameter min typ max notes transient response overshoot - 150 mv 200 mv 50% ~ 75% max load settling time - 85 us 100 us overshoot - 150 mv 200 mv 75% ~ 50% max load settling time v o =2.5 v, - 85 us 100 us overshoot - 50 mv 80 mv 50% ~ 75% max load settling time - 100 us 150 us overshoot - 50 mv 80 mv 75% ~ 50% max load settling time v o =1.2 v-1.8 v - 100 us 150 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. general specifications parameter min typ max notes efficiency v o =12 v v o =5.0 v v o =3.3 v v o =2.5 v v o =1.8 v v o =1.5 v v o =1.2 v 88% 88% 88% 88% - - - 91% 90% 90% 89.5% 85% 83% 80% - - - - - - - vin=48 v, full load , ta=25 c efficiency v o =12 v v o =5.0 v v o =3.3 v v o =2.5 v v o =1.8 v v o =1.5 v v o =1.2 v - - 89% - - - - 92% 91% 91% 87% 85% 83% 80% - - - - - - - vin=24 v, full load , ta=25 c switching frequency 240 khz 285 khz 320 khz isolation capacitance - 1500 pf - input to output isolation voltage - - 2000 v remote sense compesation - - 10% vo output voltage trim range 80% vo - 110% vo the total voltage increased by trim and remote sense should not exceed 10%vo. over temperature protection - 125 c - over voltage protection - 130% vo - vin=48v, full load, hiccup mode mtbf tbd calculated per bell core sr-332 (i o = nominal; t a = 25 c) dimensions inches millimeters 2.30 x 1.45 x 0.395 58.42 x 36.83 x 10.03 weight - 40 g - 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, 12 vdc/8.35 a, 5 vdc/20 a, 3.3 vdc/25 a, 1.2-2.5 vdc/30 a outputs 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 0rqb-c0uxxl. 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 0rqb-c0uxx0. the remote on/off pin open, unit on. current sink 0 ma - 0.75 ma output trim equations equations for calculating the trim resistor are shown below (unit: k ? ). 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. 1) for vo=1.5 v - 12 v: 2) for vo=1.2 v: notes: vo_req=desired (trimmed) output voltage [v]; vo=output voltage 22 . 10 225 . 1 626 11 . 5 ) 100 ( ? ? ? ? ? + = delta vo delta rtrimup 22 . 10 511 ? = delta rtrimdown module vout trim gnd rtrimdow n module vout trim gnd rtrimup 22 . 10 6125 . 0 313 11 . 5 ) 100 ( ? ? ? ? ? + = delta vo delta rtrimup 22 . 10 511 ? = delta rtrimdown () [] % 100 _ ? = vo vo req vo delta
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, 12 vdc/8.35 a, 5 vdc/20 a, 3.3 vdc/25 a, 1.2-2.5 vdc/30 a outputs efficiency data 45% 55% 65% 75% 85% 95% 3a 7.5a 15a 22.5a 30a output current (a) efficiency 18 v 24v 48 v 75 v ? 1 45.0% 55.0% 65.0% 75.0% 85.0% 95.0% 2.5 6.25 12.5 18.75 25 output current (a) efficiency 18 v 24v 48 v 75 v vo=2.5 v vo=3.3 v 70% 75% 80% 85% 90% 95% 2a 5a 10a 15a 20a output current (a) efficienc y 18 v 24v 48 v 75 v 70% 75% 80% 85% 90% 95% 0.83a 2.075a 4.15a 6.225a 8.3a output current (a) efficiency 18 v 24v 48 v 75 v vo=5.0 v vo=12 v thermal derating curves vo=2.5 v, vin=48 v vo=3.3 v, vin=48 v
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, 12 vdc/8.35 a, 5 vdc/20 a, 3.3 vdc/25 a, 1.2-2.5 vdc/30 a outputs thermal derating curves (continued) vo=5.0 v, vin=48 v vo=12 v, vin=48 v ripple and noise waveforms 2.5 v/30 a output 3.3 v/25 a 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 48 vdc input, 12 vdc/8.35 a, 5 vdc/20 a, 3.3 vdc/25 a, 1.2-2.5 vdc/30 a outputs ripple and noise waveforms (continued) 5.0 v/20 a output 12 v/8.35 a output note: ripple and noise at full load, 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= 2.5 v 50%-75% load transients at vin=48 v vout= 2.5 v 75%-50% load transients at vin=48 v
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, 12 vdc/8.35 a, 5 vdc/20 a, 3.3 vdc/25 a, 1.2-2.5 vdc/30 a outputs transient response waveforms (continued) vout= 3.3 v 50%-75% load transients at vin=48 v vout= 3.3 v 75%-50% load transients at vin=48 v vout= 5.0 v 50%-75% load transients at vin=48 v vout= 5.0 v 75%-50% load transients at vin=48 v vout= 12 v 50%-75% load transients at vin=48 v vout= 12 v 75%-50% load transients at vin=48 v note: transients at di/dt = 0.1 a/us, vin=48 v, with a 1 uf ceramic capacitor and a 10 uf tantalum capacitor at the output, ta=25 deg c.
? 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, 12 vdc/8.35 a, 5 vdc/20 a, 3.3 vdc/25 a, 1.2-2.5 vdc/30 a outputs 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 1 vin (+) 0.04" 2 remote on/off 0.04" 3 vin (-) 0.04" 4 vout (-) 0.062" 5 remote sense (-) 0.04" 6 trim 0.04" 7 remote sense (+) 0.04" 8 vout (+) 0.062"
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