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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 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output ? 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 (330 khz) ? basic isolation ? input over voltage lockout ? positive/negative remote sense ? remote on/off logic (option) ? ul60950-1 recognized (ul/cul) description the 0rhb-d0t series are isolated dc/dc converters that operate from a nominal 48 vdc source. these units provide up to 200 w of output power from a nominal 48 vdc input. these units are designed to be highly efficient and low cost. features include remote on/off, over current protection and under voltage lockout. these converters are 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 12.0 v 36 v - 75 v 20 a 240 w 94% 0rhb-d0t120 0rhb-d0t12l 5.0 v 36 v - 75 v 48 a 240 w 92.5% 0rhb-d0t050 0rhb-d0t05l 3.3 v 36 v - 75 v 70 a 231 w 92% 0rhb-d0t033 0rhb-d0t03l 2.5 v 36 v - 75 v 80 a 200 w 91% 0rhb-d0t025 0rhb-d0t02l 1.8 v 36 v - 75 v 80 a 144 w 89% 0rhb-d0tv80 0rhb-d0tv8l 1.5 v 36 v - 75 v 80 a 120 w 87% 0rhb-d0tv50 0rhb-d0tv5l 1.2 v 36 v - 75 v 80 a 96 w 85% 0RHB-D0TV20 0rhb-d0tv2l 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 0rhb-d0t series rohs com p liant 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 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output input specifications parameter min typ max notes input voltage 36 v 48 v 75 v input current (full load) vo=12.0 v vo=5.0 v vo=3.3 v vo=2.5 v vo=1.8 v vo=1.5 v vo=1.2 v - - - - - - - - - - - - - - 7.5 a 7.5 a 7.3 a 6.4 a 4.7 a 4.0 a 3.3 a input current (no load) - 120 ma 180 ma remote off input current 5 ma 10 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 32 v 34 v 35 v turn-off voltage threshold 30 v 32 v 34 v input over voltage lockout 76 v 78 v 80 v output specifications parameter min typ max notes output voltage set point v o =12.0 v v o =5.0 v vo=3.3 v vo=2.5 v vo=1.8 v vo=1.5 v vo=1.2 v 11.760 v 4.925 v 3.250 v 2.462 v 1.773 v 1.477 v 1.176 v 12.000 v 5.000 v 3.300 v 2.500 v 1.800 v 1.500 v 1.200 v 12.240 v 5.075 v 3.350 v 2.538 v 1.827 v 1.523 v 1.224 v vin=48 v, io=50% full load, ta=25 c. line regulation v o =12.0 v v o =5.0 v v o =3.3 v vo=1.2 v - 2.5 v - - - - 12 mv 5 mv 3 mv 3 mv 24 mv 10 mv 7 mv 6 mv load regulation v o =12.0 v v o =5.0 v v o =3.3 v vo=2.5 v vo=1.8 v vo=1.5 v vo=1.2 v - - - - - - - 30 mv 10 mv 7 mv 6 mv 5 mv 4 mv 3 mv 60 mv 20 mv 15 mv 13 mv 9 mv 8 mv 6 mv regulation over temperature (-40 c to +85 c) v o =12.0 v v o =5.0 v v o =3.3 v vo=2.5 v vo=1.8 v vo=1.5 v vo=1.2 v - - - - - - - 60 mv 45 mv 30 mv 25 mv 20 mv 20 mv 15 mv 100 mv 75 mv 50 mv 45 mv 40 mv 35 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 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output output specifications (continued) parameter min typ max notes output current v o =12.0 v v o =5.0 v vo=3.3 v vo=1.2 v - 2.5 v 0 a 0 a 0 a 0 a - - - - 20 a 48 a 70 a 80 a current limit threshold v o =12.0 v v o =5.0 v vo=3.3 v vo=1.2 v - 2.5 v 21 a 50 a 74 a 86 a 25 a 58 a 84 a 96 a 30 a 66 a 94 a 106 a hiccup mode short circuit surge transient - 3 a 2 s 5 a 2 s ripple and noise (rms) v o =12.0 v v o =5.0 v vo=3.3 v vo=1.2 v - 2.5 v - - - - 30 mv 25 mv 20 mv 15 mv 50 mv 50 mv 40 mv 30 mv ripple and noise (pk-pk) v o =12.0 v v o =5.0 v vo=3.3 v vo=1.2 v - 2.5 v - - - - 100 mv 80 mv 55 mv 40 mv 150 mv 150 mv 100 mv 80 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 v o =5.0 v - 12.0 v vo=3.3 v vo=1.2 v - 2.5 v 10 ms 8 ms 5 ms - - - 30 ms 20 ms 15 ms overshoot at turn on - 0% 5% output capacitance v o =12.0 v v o =5.0 v vo=1.2 v - 3.3 v 0 uf 0 uf 0 uf - - - 2200 uf 10000 uf 20000 uf transient response overshoot - 600 mv 800 mv 50% ~ 75% max load settling time - 300 us 500 us overshoot - 600 mv 800 mv 75% ~ 50% max load settling time v o =12.0 v - 300 us 500 us overshoot - 250 mv 400 mv 50% ~ 75% max load settling time - 250 us 400 us overshoot - 250 mv 400 mv 75% ~ 50% max load settling time v o =5.0 v - 250 us 400 us overshoot - 150 mv 200 mv 50% ~ 75% max load settling time - 200 us 300 us overshoot - 150 mv 200 mv 75% ~ 50% max load settling time v o =3.3 v - 200 us 300 us overshoot - 100 mv 200 mv 50% ~ 75% max load settling time - 200 us 300 us overshoot - 100 mv 200 mv 75% ~ 50% max load settling time v o =1.2 v - 2.5 v - 200 us 300 us test conditions: di/dt = 0.1 a/us, vin=48 v, ta=25 c 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 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output general specifications parameter min typ max notes efficiency v o =12.0 v v o =5.0 v v o =3.3 v vo=2.5 v vo=1.8 v vo=1.5 v vo=1.2 v 91% 89% 89% 88% 86% 84% 82% 94% 92.5% 92% 91% 89% 87% 85% - - - - - - - vin=48 v, full load , ta=25 c switching frequency 280 khz 330 khz 380 khz isolation capacitance - 1500 pf - 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 1,113,071 hours calculated per bell core sr-332 (vin=48 v; vo=2.5 v, i o = 80%iomax; 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 - note: all specifications are typical at nominal input, full load at 25 c unless noted. 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 0rhb-d0txxl. 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 0rhb-d0txx0. the remote on/off pin open, unit on. current sink 0 ma - 0.75 ma
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 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output 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. 1.5 v-12 v: 1.2 v: notes: vo_req=desired(trimmed) output voltage[v] output voltage vo=3.308 v for 3.3 v output; vo=5.000 v for 5.0 v; vo=12.000 v for 12 v output efficiency data efficiency curve 79% 82% 85% 88% 91% 94% 3 5 8 10 13 15 18 20 output current (a) efficienc y 36 v 48 v 75 v efficiency curve 76% 79% 82% 85% 88% 91% 94% 5 101520253035404548 output current (a) efficienc y 36 v 48 v 75 v 0rhb-d0t12x 0rhb-d0t05x efficiency curve 76% 79% 82% 85% 88% 91% 94% 10 20 30 40 50 60 70 output current (a) efficienc y 36 v 48 v 75 v efficiency curve 73% 76% 79% 82% 85% 88% 91% 94% 10 20 30 40 50 60 70 80 output current (a) efficienc y 36 v 48 v 75 v 0rhb-d0t03x 0rhb-d0t02x 2 225 . 1 5 . 122 ) 100 ( ? ? ? ? + = delta vo delta rtrimup 2 100 ? = delta rtrimdown () [] % 100 _ ? = vo vo req vo delta module vout trim gnd rtrimdown module vout trim gnd rtrimu p 2 6125 . 0 25 . 61 ) 100 ( ? ? ? ? + = delta vo delta rtrimup
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 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output efficiency data (continued) efficiency curve 71% 74% 77% 80% 83% 86% 89% 92% 10 20 30 40 50 60 70 80 output current (a) efficiency 36 v 48 v 75 v efficiency curve 69% 72% 75% 78% 81% 84% 87% 90% 10 20 30 40 50 60 70 80 output current (a) efficienc y 36 v 48 v 75 v 0rhb-d0tv8x 0rhb-d0tv5x efficiency curve 61% 64% 67% 70% 73% 76% 79% 82% 85% 88% 10 20 30 40 50 60 70 80 output current (a) efficienc y 36 v 48 v 75 v 0rhb-d0tv2x thermal derating curves 0rhb-d0t12x
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 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output thermal derating curves (continued) 0rhb-d0t05x 0rhb-d0t03x 0rhb-d0t02x 0rhb-d0tv8x 0rhb-d0tv5x 0rhb-d0tv2x
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 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output ripple and noise waveforms 48 vdc input, 12 vdc/20 a output 48 vdc input, 5 vdc/48 a output 48 vdc input, 3.3 vdc/70 a output 48 vdc input, 2.5 vdc/80 a output 48 vdc input, 1.8 vdc/80 a output 48 vdc input, 1.5 vdc/80 a output 48 vdc input, 1.2 vdc/80 a output note: ripple and noise at full load, with a 1uf ceramic cap and a 10 uf tantalum cap at 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 isolated dc/dc converters 48 vdc input 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output transient response waveforms vout=12 v, 50% to 75% load transients vout=12 v, 75% to 50% load transients vout=5 v, 50% to 75% load transients vout=5 v, 75% to 50% load transients vout=3.3 v, 50% to 75% load transients vout=3.3 v, 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 isolated dc/dc converters 48 vdc input 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output transient response waveforms (continued) vout=2.5 v, 50% to 75% load transients vout=2.5 v, 75% to 50% load transients vout=1.8 v, 50% to 75% load transients vout=1.8 v, 75% to 50% load transients vout=1.5 v, 50% to 75% load transients vout=1.5 v, 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 isolated dc/dc converters 48 vdc input 1.2-2.5 vdc/80 a, 3.3 vdc/70 a, 5 vdc/48 a, 12 vdc/20 a output transient response waveforms (continued) vout=1.2 v, 50% to 75% load transients vout=1.2 v, 75% to 50% load transients note: transient response at di/dt=0.1 a/us, vin=48 vdc, ta=25 c, with a 1 f ceramic capacitor and a 10 f tantalum capacitor at output. mechanical outline
? 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 v dc in p ut 1.2-2.5 v dc / 80 a , 3.3 v dc / 70 a, 5 v dc / 48 a, 12 v dc / 20 a out p ut mechanical outline (continued) 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" 7 -sense 0.04" 2 on/off 0.04" 8 trim 0.04" 3 n/a 9 +sense 0.04" 4 -input 0.04" 10 +output 0.08" 5 -output 0.08" 11 +output 0.08" 6 -output 0.08" notes: 1. pin 7 must be connected to -output. 2. leave pin 8 open for nominal voltage. 3. pin 9 must be connected to +output.

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