north america: 760-930-4600 europe (uk): 01384-842211 138 electrical specifications input input range .......................... 20 to 72 vdc input surge voltage .............. 100v for 100ms input reflected ripple ........... <1ma see note 2 input capacitance ................. 2.2mf (typical) efficiency ............................... 82% typical input reverse ........................ fuse recommended voltage protection control enable ................................... ttl compatible (high to enable or open circuit) paralleling ............................. singles only output voltage tolerance .................. + 1% (main) output 2&3 (12v); +6.0%, -0% output 2&3 (15v); +3%, -6% line regulation ..................... +0.5% (main); +1% (aux) load regulation .................... + 1% (main) 10%-fl; + 5% (aux); 10%l to fl, bal. ripple/noise .......................... 1% mv p-p; bandwidth 20 mhz; see note 1 below temperature coefficient ........ +0.02%/ c (max) short circuit protection ......... continuous- power cycle output 1,2 and 3 overvoltage protection ......... zener (main only) transient response .............. 300 msec (50% step) switching frequency ............. 330 khz typical isolation i/o isolation ........................... 1500 vdc isolation resistance .............. 1 x 10 9 ohms special features ? isolated output ? 3.6:1 input range ? 5 year warranty ? 4.0" x 2.6" x 0.5" case ? parallelable (singles only) ? six sided shielding environmental operating temperature ambient: -40 c to +60 c fl, no derating operating temperature (baseplate): 105 c max humidity (non-condensing): 5% to 95% storage temperature: -40 c to +105 c mtbf: 312,000 hours (mil hdbk-217f) safety u l ul 1950 aa50a 50 watts notes note 1- an external 0.1mf ceramic capacitor is recommendd to be placed from the +v out to the -v out. note 2- requires a 2.2mf, 100v film capacitor connected between +vin and -vin to meet fcc class a and ets300-381-1. all specifications are typical at nominal line, full load, and 25 c unless otherwise noted. specifications subject to change without notice. aa50a series input voltages 24v or 48v # of outputs single, t riple total power 50 w atts new 3.3v output
power fax 760-930-0 88 1 139 astec america 6339 paseo del lago carlsbad, ca 92009 t elephone: 760-930-4600 facsimile: 760-930-0698 astec europe astec house, w aterfront business park merry hill, dudley w est midlands, dy8 4pg, uk t elephone: 01384-8422 1 1 facsimile: 01384-843355 dc/dc converters dc/dc converters ters .040 dia. typ. .04 (1.01) .50 (12.70) .15 min. (3.81) (1.01) dimens i ons doc no:1352 ? rev 9.15.97 o r dering inf o r m a t i on input output 1 output 2 output 3 maximum model number v oltage v oltage v oltage v oltage power 20-72vdc 3.3v @ 12.0a 40w aa50a-048l-0335 20-72 vdc 5v @ 10.0a 50w aa50a-048l-050s 20-72 vdc 12v @ 4.2a 50w aa50a-048l-120s 20-72 vdc 15v @ 3.4a 50w aa50a-048l-150s 20-72 vdc 5v @ 6.0a 12v @ 0.750ma -12v @ 0.750ma 50w aa50a-048l-050t120 20-72 vdc 5v @ 6.0a 15v @ 0.650ma -15v @ 0.650ma 50w aa50a-048l-050t150 please contac t astec for information on other output voltages, power ranges and configurations. p in a ssignment 20-72v input single output 1 . + v in 2 . - v in 3 . nc (reserved) 4 . nc (reserved) 5 . nc (reserved) 6 . output 1 7 . comm 8 . enable 9 . parallel 20-72v input t riple output 1 . + v in 2 . - v in 3 . output 2 4 . r tn aux 5 . output 3 6 . output 1 7 . comm 8 . enable 9 . nc (reserved) case material : six-sided, metal w eight : 7.2 oz./200 grams top view all dimensions are in inches (mm) 2 1 7 6 5 4 3 .30 2.500 3.00 .200 .500 .800 .300 .700 1.00 .400 2.50 .25 3.50 4.00 .25 2.10 .05 .50 (12.70) 2.60 8 .600 9 .300 (101.60) (88.90 ) (6.35) (7.62) (5.08) (17.78) (12.70) (20.32) (63.50) (53.34) (66.04) (7.62) (10.16) (25.40) (15.24) (7.62) (63.50) (76.20) (1.27) (6.35) .145 dia mtg holes 4 plcs aa50a
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