ro associates, inc. sunnyvale, ca 408 744-1450 fax:408 744-1521 email:sales@roassoc.com ordering information model input v1 output v2 output number voltage voltage current voltage current (vdc) (vdc) (a) (vdc) (a) svd48-3325 36-75 3.3 15 2.5 20 positive logic on/off is standard. for optional* negative logic add ?1 suffix to the model number. *minimum quantity and lead-time restrictions apply. for other models check www.roassoc.com/products/duals.htm evaluation boards are available distributed power in telecom, internet, wireless, & computer electronics ? input: 36 - 75vdc ? dual output: 3.3vdc @ 15a 2.5vdc @ 20a features ? independently regulated, dual outputs (common gnd. standard, floating outputs optional*) ? excellent dynamic cross regulation ? auto-recovery circuit protection: ocp, ovp, otp ? -40 to +100c operation ? constant frequency ? independent, 10% trim for each output ? high power density: 36.4 w/cu. in. ? low noise ? open frame construction ? safety agency approved ? compatible with industry standard, dual output, dc-dc converters description the superverter ? dual output dc-dc converter is a high density, dual output module packaged in the industry standard ?half brick? size. its state-of-the-art topology provides independent regulation of each output; which minimizes ground loops, improves static and dynamic cross-regulation, and allows an optional isolated output version to be offered. the module?s high efficiency allows both outputs to be simultaneously operated at rated current, and the switching of the primary and both secondary power stages is synchronized to minimize noise at low ?beat? frequencies. all of this power and functionality is squeezed into a tiny, open-frame package (just 2.28 x 2.4 x 0.5 inches) with an industry standard footprint. 100w, dc-dc converter model svd48-3325 preliminary data sheet ?
superverter ? dual output dc-dc converter svd48-3325 ro associates, inc. sunnyvale, ca 408 744-1450 fax:408 744-1521 email:sales@roassoc.com absolute maximum ratings parameter min max units conditions transient input voltage (+in to ?in) -0.3 100 vdc 100 msec. max. on/off voltage (on/off to ?in) -0.3 30 vdc storage temperature -40 +125 c operating temperature -40 +100 c baseplate soldering temperature (wave solder) 260 c < 5 sec. soldering temperature (hand solder) 390 c < 7 sec. electrical specifications input parameters min typ max units conditions input voltage 36 48 75 vdc startup voltage 34 35 36 vdc shut down voltage 30 31 32 vdc maximum input current 4.7 a see input characteristic curve reflected ripple current 80 ma p-p vin = 48 v, full load, 0 ? 20 mhz input ripple rejection 60 db @120 hz output parameters min typ max units conditions voltage set point ? output 1 3.25 3.3 3.35 vdc 48 v in , 25c, full load voltage set point ? output 2 2.45 2.50 2.55 vdc 48 v in , 25c, full load load regulation 0.5 % 0 a to full load line regulation 0.2 % over v in range voltage drift w/temperature 0.02 %/c -40 to +100 c output 1 ripple 75 20 mv p-p mv rms 5 hz to 20 mhz, with 1 f ceramic and 10 f electrolytic external capacitors output 2 ripple 75 20 mv p-p mv rms 5 hz to 20 mhz, with 1 f ceramic and 10 f electrolytic external capacitors rated current ? output 1 1.5 15 a rated current ? output 2 2.0 20 a output power 100 w current limit inception 110 125 140 % f.l. v out = 95% v out nominal short circuit current 150 % f.l. v out = 250 mv transient response peak deviation (0.1a/sec slew rate) 1 % v out load change from 50% to 75% to 50% full load transient response settling time (0.1a/sec slew rate) 500 sec v out within 1% v out nominal efficiency 78 % v in = 48 v, 50w load, 25 c case exceeding absolute maximum ratings may cause permanent damage and may reduce reliability. electrical specifications apply at nominal input voltage, full load, and 25c unless indicated otherwise.
superverter ? dual output dc-dc converter svd48-3325 ro associates, inc. sunnyvale, ca 408 744-1450 fax:408 744-1521 email:sales@roassoc.com electrical specifications (continued) isolation parameters min typ max units conditions input/output isolation 1500 vdc input/baseplate isolation 1500 vdc output/baseplate isolation 500 vdc input-to-output capacitance 2000 pf case floating input-to-output resistance 10 m ohms mechanical parameters min typ max units conditions weight 68 (2.4) g (oz.) size 2.28 x 2.4 x 0.5 inches see outline drawing thermal resistance, case-to- ambient 6.6 c/w case temperature = 100 c feature parameters min typ max units conditions trim range -10 +10 % over voltage protection (non- shutdown, auto. recovery) 115 140 % v out (nom) 25 c case over temperature shut-down 105 110 115 c case temperature turn-on time 10 msec 80% f.l., v out within 1% of final value logic on/off logic low 0.5 v v out = 0 on/off source current 2 ma @v on/off < 0.5 v logic high 15 v on/off sink current 50 a @v on/off = 15 v trim circuit configurations trim resistor calculations 3.3v ? ? ? ? ? ? ? ? ? ? ? ? = ? k v v 110 5 069 2 r o o up trim . . 3.3v ? ? ? ? ? ? ? ? ? ? ? ? = ? k v v 779 6 437 3 r o o down trim . . 2.5v ? ? ? ? ? ? ? ? ? ? ? ? = ? k v v 00 10 250 6 r o o up trim . . r trim-u p v1 or v2 trimx load trim up -voutx +voutx r trim-down v1 or v2 trimx load trim down -voutx +voutx 2.5v ? ? ? ? ? ? ? ? ? ? ? ? = ? k v v 04 15 350 6 r o o down trim . .
superverter ? dual output dc-dc converter svd48-3325 ro associates, inc. www.roassoc.com 800-443-1450 p.o.box 61419 rev020501 408 744-1450 sunnyvale, ca 94088 email:sales@roassoc.com fax: 408 744-1521 3.3v transient response 2.5v transient response 20 mv/div 20 mv/div 100 sec./div. 100 sec./div. efficiency outline drawing efficiency (%) 0 10 20 30 40 50 60 70 80 0 102030405060708090100 load power (%) input characteristics input current (amps) 0 1 2 3 4 5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 input voltage (volts) v1 i out = 7.50 a ? 11.25 a ? 7.50 a current slew rate = 0.1 a/sec v2 i out = 10 a v1 i out = 7.50 a v2 i out = 10.00 a ? 15.00 a ? 10.00 a current slew rate = 1.0 a/ sec x.xxx in. 0.010 in. [x.xx mm. 0.25 mm.] 2.28 [57.9] 0.224 ? max [5.69 ? max] mounting inserts m3 x 0.5 thru 4 pl x.xx in. 0.02 in. [x.x mm. 0.5 mm.] all dimensions are given in inches [millimeters] notes - unless specified otherwise aluminum heatsink surface tolerances: 1.400 [35.56] 2.00 [50.8] 2.40 [61.0] on/ off 0.040 [1.02] ? pin 10 pl. +vin trim1 -vout1 -vin case 0.600 [15.24] pin side nearside -vout2 +vout1 trim2 +vout2 1.90 [48.3] 0.515 0.020 [12.70 0.5] 0.18 min [4.6 min] 1.600 [40.64] 0.400 [10.16] 1.000 [25.40]
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