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 3.3 vdc /15 a output, 1/8 brick converter nov. 30, 2010 bel power inc., a subsid iary of bel fuse inc. features ? isolated ? output over-voltage shutdown ? high efficiency ? ocp/scp ? high power density ? over temperature protection ? fixed frequency (300 khz) ? remote on/off ? low cost ? output voltage trim ? input under-voltage lockout ? positive/negative remote sense ? pre-bias start up ? basic insulation ? ul 60950-1, 2 nd edition ? csa c22.2 , 2 nd edition applications ? networking ? computers and peripherals ? telecommunications description the 0RCB-60T03C is isolated dc/dc converter that operates from a nominal 48 vdc source. this unit will provide up to 49.5 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 low 3.3 vdc 36 vdc - 75 vdc 15 a 49.5 w 90% 0RCB-60T03C notes: add ?g? suffix at the end of the model number to indicate tray packaging. part number explanation 0 r cb ? 60 t 03 c 1 2 3 4 5 6 7 1---through hole 2---rohs 6, change ?r? to ?7? means rohs 5 3---series name 4---series code 5---input range (36-75v) 6---output voltage 3.3v 7---suffix 0RCB-60T03C rev.b rohs compliant file rev.a
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 3.3 vdc /15 a output, 1/8 brick converter nov. 30, 2010 bel power inc., a subsid iary of bel fuse inc. absolute maximum ratings parameter min typ max unit notes input voltage (continuous) -0.3 - 80 v remote on/off -0.3 - 18 v i/o isolation voltage - - 1500 v input to each output resistance 10 - - m ohm 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 current (full load) - - 1.8 a input current (no load) - - 80 ma input reflected ripple current (pk-pk) - - 15 ma tested with simulated source impedance of 10 uh, 5 hz to 20 mhz; use a 47 uf/100 v electrolytic capacitor with esr = 1 ohm max. at 200 khz at 25 c. input fuse (not internally) - - 5.0 a i 2 t inrush current transient - - 0.1 a 2 s turn-on voltage threshold 32 - 35 v turn-off voltage threshold 28.5 - 31.7 v note: all specifications are typical at 25 c unless otherwise stated. output specifications (continued) parameter min typ max unit notes output voltage range 3.201 3.3 3.399 v over all line, load & temperature conditions. output voltage trim range 2.97 - 3.63 v output over-voltage clamp non-latching 3.69 - 4.62 v output current - - 15 a current limit threshold 15.2 - 26 a external admissible capacitive load 0 - 10000 uf ripple and noise (pk-pk) - - 130 mv vin=72 v, max load on output, 20 mhz bw, 10uf tantalum and 1uf ceramic capacitor. turn on time - - 220 ms rise time - - 15 ms transient response vpk-pk - - 230 mv 50% ~ 75% ~ 50% max load settling time - - 200 us di/dt=0.1a/us, vin=48vdc, ta=25c, with a 1f ceramic capacitor and a 10uf tantalum cap at the output.cap at the output. note: all specifications are typical at nominal inpu t, full load at 25c 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 3 isolated dc/dc converters 48 vdc input 3.3 vdc /15 a output, 1/8 brick converter nov. 30, 2010 bel power inc., a subsid iary of bel fuse inc. general specifications parameter min typ max unit notes efficiency 87 90 - % measured with full load at all conditions. switching frequency 270 300 330 khz isolation capacitance - 3900 - pf remote sense compensation - - 10 % the total voltage increased by trim and remote sense should not exceed 10%vo. over temperature protection - 125 - c weight - 26 - g mtbf 2,370,000 hours calculated per bell core sr-332 (vin=48 v, vo=3.3 v, io=12 a, t a = 25 c) dimensions inches (l w h) millimeters (l w h) 2.30 x 0.896 x 0.374 58.42 x 22.76 x 9.50 - note : all specifications are typical at 25 c unless otherwise stated. remote on/off parameter min typ max unit notes signal low (unit on) -0.3 - 0.8 v signal high (unit off) active low 2.4 - 18 v the remote on/off pin open, unit off. current sink 0 - 1 ma efficiency data efficient curve 70% 72% 74% 76% 78% 80% 82% 84% 86% 88% 90% 92% 51015 output current (a) efficient 38.4 v 48 v 60 v 72 v
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 3.3 vdc /15 a output, 1/8 brick converter nov. 30, 2010 bel power inc., a subsid iary 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 (+). only one of the resistors should be used for any given application. note: vo_req=desired (trimmed) output voltage [v] output voltage vo=3.305 v fundamental circuit diagram () [] % 100 _ ? = vo vo req vo delta module sense(+) trim sense(-) rt rimup module sense(+) trim sense(-) rtrimdown [] ? ? ? ? ? + = k delta delta vo delta rtrimup ) 22 . 10 511 225 . 1 11 . 5 ) 100 ( ( [] ? = k delta rtrimdown 22 . 10 511 control isolated feedback control 1 2 3 8 4 7 5 6 choke capacitor resistor
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 3.3 vdc /15 a output, 1/8 brick converter nov. 30, 2010 bel power inc., a subsid iary of bel fuse inc. thermal derating curves vin=48v, with maximum junction temperature of semiconductors derated to 120 degree c.
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 3.3 vdc /15 a output, 1/8 brick converter nov. 30, 2010 bel power inc., a subsid iary of bel fuse inc. thermal derating curves (continued) temperature reference points on top side temperature reference points on bottom side
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 3.3 vdc /15 a output, 1/8 brick converter nov. 30, 2010 bel power inc., a subsid iary of bel fuse inc. safety material flammability: ul94v-0 electromagnetic compatibility emc 1. electric field iec801-3(1984), iec1000-4-3 2. fast transient/burst iec801-4(1988), iec1000-4-4 input rfi level conducted and radiated (subject to test by customer) compliance to en55022 class a (both q.peak and average) with the following inductive and capacitive filter c1=3.3 uf /100 v; c2=c3= 47 uf/100 v; c4=c5=1000 pf/250 volt; t1=3 mh. conv.positive input conv.negative input c1 c2 c3 t1 t1 +vin -vin c4 c5 -20 0 20 40 60 80 level [db? ] 150k 300k 500k 1m 2m 3m 4m 6m 10m 30m frequency [hz] + + + + + + x x x x x x x x mes 05-1012-12l_ fin qp + + mes 05-1012-12l_ fin av mes 05-1012-12l_ pre pk mes 05-1012-12l_ pre av
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 8 isolated dc/dc converters 48 vdc input 3.3 vdc /15 a output, 1/8 brick converter nov. 30, 2010 bel power inc., a subsid iary of bel fuse inc. transient response waveforms note: dynamic load transient at vin = 48 v, ta = 25 c, io=(50%~75%~50%)ionom, di/dt=0.1 a/us. ripple and noise waveforms c1=10 uf tantalum, c2=1 uf ceramic; r=50 ohm; c=220 nf . vin =38.4 v and iout = 15 a vin =48 v and iout = 15 a vin =72 v and iout = 15 a
bel fuse inc. 206 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com 9 isolated dc/dc converters 48 vdc input 3.3 vdc /15 a output, 1/8 brick converter nov. 30, 2010 bel power inc., a subsid iary 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 function pin dia 1 vin+ positive input voltage 0.040?? 2 on/off input to turn converter on and off, referenced to vin- 0.040?? 3 vin- negative input voltage 0.040?? 4 vout- negative output voltage 0.062?? 5 sense- negative remote sense 0.040?? 6 trim output voltage trim 0.040?? 7 sense+ positive output voltage 0.040?? 8 vout+ positive output voltage 0.062?? notes: 1. pin 5 must be connected to vout-. 2. leave pin 6 open for nominal voltage. 3. pin 7 must be connected to vout+. note: the module doesn't guarantee at least 0.7mm as clearance distance on bottom side. this issue should be considered if any copper traces are on the top side of the user's board.
? 2010 bel fuse inc. specifications subject to change without notice. 113010 10 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 /15 a output, 1/8 brick converter nov. 30, 2010 bel power inc., a subsid iary of bel fuse inc. revision history date revision changes detail approval 2009-11-26 a first release xf jiang 2010-11-30 b add ul 60950-1, 2 nd edition and csa c22.2, 2 nd edition in the first page. xf jiang rohs compliance complies with the european directive 2002/95/ec , calling for the elimin ation of lead and other hazardous substances from electronic products.
|
