ro associates, inc. sunnyvale, ca 408 744-1450 fax:408 744-1521 email:sales@roassoc.com ? input: 36 - 75vdc ? output: 1.8vdc @ 60, 70, or 80a features ? high efficiency: over 88% ? high power density: 50 w/cu. in. ? provisions for heat sink attachment ? optional non-shutdown over voltage protection ? recovers automatically from all protection modes ? trim range: 80 to 110% ? remote sense ? constant frequency ? -40 to +100c operation ? safety agency compliant ? dual output pins for a low loss pcb interface model selection model input output output number voltage voltage current (vdc) (vdc) (a) syvhc48-1.8-80-1 36-75 1.8 80 syvhc48-1.8-70-1 36-75 1.8 70 syvhc48-1.8-60-1 36-75 1.8 60 see the last page for available options description syncroverter hc dc-dc converters are ultra-high efficiency, high current modules packaged in a modified ?half brick? package. their isolated, fixed frequency, state-of-the-art design uses synchronous rectification, an integrated planar transformer, and a low loss multi- layer pcb to provide up to 80a of 1.8vdc power. their very high efficiency allows them to be operated in a typical application without a heat sink. the hc series includes an integral thermal interface to attach a high performance cooling system for more demanding environments. efficiency efficiency (%) 76 78 80 82 84 86 88 90 0 1020304050607080 75vin 48vin 36vin load current (amps) 110w,125w,& 145w dc-dc converters models: syvhc48-1.8-60/70/80 data sheet tm evaluation boards are available
syncroverter tm hc dc-dc converters syvhc48-1.8-60/70/80-1 ro associates, inc. sunnyvale, ca 408 744-1450 fax:408 744-1521 email:sales@roassoc.com absolute maximum ratings parameter min max units conditions continuous input voltage (+in to ?in) -0.3 75 vdc transient input voltage (+in to ?in) -0.3 80 vdc up to 100ms on/off voltage (on/off to ?in) -0.3 40 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. specifications input parameters min typ max units conditions input voltage 36 48 75 vdc startup voltage 33 34 35 vdc shut down voltage 30 31 32 vdc maximum input current 5.3 a 36v in , 25c input ripple rejection 60 db @120 hz output parameters min typ max units conditions voltage set point 1.78 1.80 1.82 vdc 48v in , 25c, full load load regulation 0.05 0.2 % 0 a to full load line regulation 0.05 0.2 % over v in range voltage drift w/temperature 0.02 %/c -40 to +100 c ripple 75 150 mv p-p 5 hz to 20 mhz, c ext = 10f tantalum + 1f ceramic rated current 60a model 70a model 80a model 0 0 0 60 70 80 a output power 60a model 70a model 80a model 108 126 144 w @ 1.8vdc current limit inception 112 117 130 % f.l. v out = 95% v out nominal short circuit current 150 % f.l. v out = 250mv transient response peak deviation settling time 100 50 mv sec load change from 50% to 75% full load slew rate = 1a/sec v out within 1% v out nominal external load capacitance 0 10,000 f efficiency (see efficiency curve) 88 % v in = 48v, 60a load, 25 c case specifications apply with 48vin, full load, 25c unless indicated otherwise. exceedin g absolute maximum ratin g s ma y cause permanent dama g e and ma y reduce reliabilit y
syncroverter tm hc dc-dc converters syvhc48-1.8-60/70/80-1 ro associates, inc. sunnyvale, ca 408 744-1450 fax:408 744-1521 email:sales@roassoc.com 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 125 pf input-to-output resistance 10 m ohms mechanical parameters min typ max units conditions weight 94 (3.3) g (oz.) size 2.42 x 2.4 x 0.5 inches thermal resistance, case-to- ambient 6.6 c/w case temperature = 100c feature parameters min typ max units conditions trim range 1.44 1.98 vdc over voltage protection 25c case shut down voltage 115 160 % v out auto-restart delay 150 msec over temperature shut-down (automatic recovery) 105 c case temperature turn-on time 25 60 msec 80% f.l., v out settled within 1% logic on/off logic low 0.5 v v out = 0 on/off source current 2 ma @v on/off < 0.5v logic high 15 v on/off sink current 50 a @v on/off = 15v logic turn-on time 12 msec 80% f.l., v out settled within 1% trim circuit configurations trim resistor calculations (s t a n da r d trim ) () ? ? ? ? ? ? ? ? ? ? ? + ? ? ? + ? = ? k 1 1 100 225 1 100 v 10 r o up trim % % . % . %) ( ? ? ? ? ? ? ? ? ? ? ? = ? k 1 1 100 10 r dn trim . % +out +sense trim -sense -out trim-up load r trim-up +out +sense trim -sense -out trim-down load r trim-dn where: vo = the nominal output voltage of the module with no trimming. ? ? ? ? % = the desired percentage change in the output ( ? ? ? ? % is always a positive number).
syncroverter tm hc dc-dc converters syvhc48-1.8-60/70/80-1 ro associates, inc. www.roassoc.com 800-443-1450 p.o.box 61419 rev 040709 408 744-1450 sunnyvale, ca 94088 email:sales@roassoc.com fax: 408 744-1521 input characteristics output characteristics input current (amps) 0 1 2 3 4 5 6 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 syvhc48-1.8-80 full load output voltage (volts) 0.0 0.5 1.0 1.5 2.0 2.5 0 20 40 60 80 100 120 140 output automatically recovers when overload is removed input voltage (volts) output current (amps) 1.8v transient response outline drawing i out = 40.0a ? 60.0a ? 40.0a current slew rate = 1 a/sec part numbering scheme converter family v in (nom) v out (nom) i o (rated) options code special features syvhc 48 - 1.8 - 80 - 1 syncroverter hc series 48v nom. 36v - 75v 1.8v output i o rating = 80a neg. logic ( see below ) standard the options code is the concatenation of the suffixes for the desired options. available options 0.400 [10.16] 0.30 [7.6] 0.300 [7.62] 0.169 ? max [4.28 ? max] mounting inserts m3 x 0.5 thru 4 pl 0.137 [3.47] 0.332 [8.43] 0.21 [5.3] 0.500 0.020 [12.70 0.5] -vout 2.042 [51.87] pin side nearside t +s +vout -s 2.00 [50.8] 0.600 [15.24] 2.40 [61.0] 1.400 [35.56] -vin on/ off case +vin 2.42 [61.5] 0.080 [2.03] ? pin 4 pl. 0.040 [1.02] ? pin 7 pl. aluminum heatsink surface inches [millimeters] tolerances unless specified otherwise: x.xxx in. 0.010 in. [x.xx mm. 0.25 mm.] x.xx in. 0.02 in. [x.x mm. 0.5 mm.] all dimensions are in negative logic ( 1 ) ? the on/off pin must be held low to turn the module on. if it?s left floating, the module turns off. the suffix for negative logic is ? 1 ?. this is the standard logic configuration. positive logic () ? the on/off pin must be high to turn the module on. if it?s left floating, the module turns on. the positive logic suffix is ??. alternate pins ( 6 ) ? replaces the standard 0.200? thru-hole pins, with 0.145? thru-hole pins. the suffix for 0.145? pins is ? 6 ?. alternate trim ( t ) ? the trim resistor is calculated using the industry standard equations. the alternate trim suffix is ? t ?. ride-thru ovp ( r ) ? the protection circuits limit the output to the ovp level without shutting down. the ride-thru ovp suffix is ? r ?. (minimum quantities and extended lead-times may apply to orders of non-standard options) (vin = 48v) swee p @ 50 sec/div. vout @ 100mv/div. i load @ 10a/div.
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