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 36 vdc - 75 vdc input +12 vdc/5 a, -12 vdc/1.5 a dual outputs ? isolated ? low cost ? fixed frequency (300 khz) ? scp/ocp ? high efficiency ? remote on/off ? high power density ? output voltage trim ? input under- voltage lockout ? output over-voltage (uvlo) protection (ovp) ? ul60950-1 recognized (ul/cul) and ce mark ? over temperature protection description the 0rxu-75td10 is an isolated dc/dc converter that operates from a nominal 48 vdc source. it provides up to 78 w of output power with two output voltages. features include remote on/off, output adjust, short circuit protection, over current protection, over-temperature shutdown, output over voltage protection, and input under voltage lockout. this converter is provided in a compact, though-hole package that is easy to use and provides good thermal performance. part selection output voltage input voltage max. output current max. output power typical efficiency model number +12 vdc/-12 vdc 36 vdc - 75 vdc 5 a/1.5 a 78 w 90% 0rxu-75td10 notes : 1. all part numbers above indicate rohs 6. change the second letter "r" to "7" for rohs 5 part numbers. 2. add ?g? suffix at the end of the model numbers listed above to indicate ?tray packaging?. absolute maximum ratings parameter min typ max notes input voltage -0.3 v - 100 v 100 v for 10 ms max. remote on/off -0.3 v - 30 v ambient temperature -40 c - 85 c storage temperature -40 c - 125 c input specifications parameter min typ max notes input voltage 36 v - 75 v input current (no load) - - 200 ma input current (full load) - - 3 a remote off input current - 10 ma 20 ma input reflected ripple current (rms) - 10 ma 30 ma input reflected ripple current (pk-pk) - 50 ma 100 ma 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 200k hz turn on voltage threshold 32 v 34 v 35 v turn off voltage threshold 30 v 31 v 33 v note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. 0rxu-75td10 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 36 vdc - 75 vdc input +12 vdc/5 a, -12 vdc/1.5 a dual outputs output specifications parameter min typ max notes output voltage set point v o1 =+12 v v o2 =-12 v +11.76 v -11.86 v +12 v -12.1 v +12.24 v -12.34 v vin=48 v, lo=50% load load regulation v o1 =+12 v v o2 =-12 v - - - - 2% v o 4% v o io1=50% imax1; io2=50% imax2 io2=50% imax2; io1=50% imax1 line regulation v o1 =+12 v v o2 =-12 v - - - - 1% v o 1% v o io1=50% imax1; io2=50% imax2 regulation over temperature - - 0.02% / c(-40 c to +85 c) output current v o1 =+12 v v o2 =-12 v 0.06 a 0.06 a - - 5 a 1.5 a output current limit v o1 =+12 v v o2 =-12 v 6 a 1.8 a - - 7.5 a 2.25 a hiccup mode short circuit protection - - - hiccup mode startup time power up remote on/off - - 10 ms 7 ms 20 ms 20 ms overshoot at turn on - - 5% ripple and noise (rms) v o1 =+12 v v o2 =-12 v - - 25 mv 10 mv 50 mv 50 mv ripple and noise (pk-pk) v o1 =+12 v v o2 =-12 v - - 75 mv 40 mv 150 mv 150 mv test conditions: 0-20 mhz bandwidth, with a 1 uf ceramic capacitor at the output. output capacitance 0 uf - 1,000 uf for both v o1 and v o2 transient response overshoot - 300 mv 600 mv 50% ~ 75% max load settling time - 150 us 300 us overshoot - 300 mv 600 mv 75% ~ 50% max load settling time v o1 =+12 v - 150 us 300 us overshoot - 300 mv 600 mv 50% ~ 75% max load settling time - 150 us 300 us overshoot - 300 mv 600 mv 75% ~ 50% max load settling time v o2 =-12 v - 150 us 300 us test conditions: di/dt=0.5 a/us, vin=48 v note: all specifications are typical at nominal input, full load 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 isolated dc/dc converters 36 vdc - 75 vdc input +12 vdc/5 a, -12 vdc/1.5 a dual outputs general specifications parameter min typ max notes efficiency 84% 90% - v in = 48 v; full load switching frequency 270k hz 300k hz 330k hz i/o isolation voltage - 1500 v - isolation capacitance - 1500 pf - output trim range 90% - 110% output over voltage protection v o1 =+12 v v o2 =-12 v +13.5 v -13.5 v +15 v -15 v +17 v -17 v hiccup mode hiccup mode over-temperature - 130 c - mtbf 2,366,749 hours calculated per bell core sr-332 (i o = 80% imax; t a = 25 c) dimensions inches (l w h) millimeters (l w h) 2.28 x 2.4 x 0.48 57.9 x 61.0 x 12.09 weight - 45 g - note: all specifications are typical at nominal input, full load at 25 c unless otherwise stated. control specifications parameter min typ max notes remote on/off signal low (unit on) -0.3 v - 1.8 v signal high (unit off) 3.5 v - 12 v active low; remote on/off pin open, unit off. output trim equations equations for calculating the trim resistor (in k ? ) given the desired adjusted voltage (vadj) and the nominal output voltage of the converter (vnom) are shown below. the trim down resistor should be connected between the trim pin and v o1 . the trim up resistor should be connected between the trim pin and com. only one of the resistors should be used for any given application. 5 . 20 86 . 99 _ ? ? = adj nom down trim v v r 10 25 . 26 _ ? ? = nom adj up trim v v r note: output voltage vo=12.012 v rtrim_down module vout1 com trim rtrim_up module vout1 com trim
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 36 vdc - 75 vdc input +12 vdc/5 a, -12 vdc/1.5 a dual outputs efficiency data 0rxu-75td10 module 0.600 0.650 0.700 0.750 0.800 0.850 0.900 0.950 10%load 25%load 50%load 75%load 100%load output current efficienc y vin =3 6 v vin =4 8 v vin =7 5 v thermal derating curve (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 36 vdc - 75 vdc input +12 vdc/5 a, -12 vdc/1.5 a dual outputs ripple and noise waveforms ripple and noise at full load, 36 v input, ch1 (+)12 v/5 a output, (-)12 v/1.5 a ripple and noise at full load, 48 v input, ch1 (+)12 v/5 a output, (-)12 v/1.5 a ripple and noise at full load, 75 v input, ch1 (+)12 v/5 a output, (-)12 v/1.5 a note: with a 1uf ceramic capacitor 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 isolated dc/dc converters 36 vdc - 75 vdc input +12 vdc/5 a, -12 vdc/1.5 a dual outputs transient response waveforms vout=(+)12 v 50%-75% load transients at vin=36 v vout=(+12) v 75%-50% load transients at vin=36 v vout=(-)12 v 50% - 75% load transients at vin=36 v vout=(-)12 v 75% -50% load transients at vin=36 v vout=(+)12 v 50%-75% load transients at vin=48 v vout=(+12) 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 36 vdc - 75 vdc input +12 vdc/5 a, -12 vdc/1.5 a dual outputs transient response waveforms (continued) vout=(-)12 v 50% - 75% load transients at vin=48 v vout=(-)12 v 75% -50% load transients at vin=48 v vout=(+)12 v 50%-75% load transients at vin=75 v vout=(+12) v 75%-50% load transients at vin=75 v vout=(-)12 v 50% - 75% load transients at vin=75 v vout=(-)12 v 75% -50% load transients at vin=75 v
? 2007 bel fuse inc. specifications subject to change without notice. 030107 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 36 vdc - 75 vdc input +12 vdc/5 a, -12 vdc/1.5 a dual 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 function 1 -v in 6 com 2 fg 7 trim 3 rem 8 com 4 +vin 9 -v o1 (-12 v) 5 +v o1 (+12 v) 10 no connection
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