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24v maxi family rev 6.6 vicorpower.com page 1 of 15 01/2016 800 927.9474 features & benefts ? dc input range: 18 C 36v ? isolated output ? operation to 16v at 75% power after startup ? input surge withstand: 50v for 100ms ? dc output: 3.3 C 48v ? programmable output: 10 to 110% ? regulation: 0.25% no load to full load ? effciency: up to 88% ? maximum operating temp: 100c, full load ? power density: up to 99w per cubic inch ? height above board: 0.43in. (10,9mm) ? parallelable, with n+m fault tolerance ? low noise zcs/zvs architecture ? rohs compliant (with f or g pin option) product overview these dc-dc converter modules use advanced power processing, control and packaging technologies to provide the performance, fexibility, reliability and cost effectiveness of a mature power component. high frequency zcs/zvs switching provides high power density with low noise and high effciency. parameter rating unit notes +in to Cin voltage -0.5 to +53 v dc pc to Cin voltage -0.5 to +7.0 v dc pr to Cin voltage -0.5 to +7.0 v dc sc to -out voltage -0.5 to +1.5 v dc -sense to -out voltage 1.0 v dc +out to -out, +sense to -out see module output specifcations isolation voltage in to out 3000 v rms test voltage in to base 1500 v rms test voltage out to base 500 v rms test voltage operating temperature -55 to +100 c m-grade storage temperature -65 to +125 c m-grade pin soldering temperature 500 (260) f (c) <5 sec; wave solder 750 (390) f (c) <7 sec; hand solder mounting torque 5 (0.57) in-lbs (n-m) 6 each output power v out p out 3.3v 200w, 264w 5v 300w, 400w 6.5v 400w 8v 300w 12v 300w, 400w, 500w 15v 300w, 400w 24v 300w, 400w, 500w 28v 300w, 400w, 500w 36v 300w, 400w 48v 300w, 400w absolute maximum ratings part numbering e.g. v24a12t400bl2 24a b output voltage 3v3 = 3.3v 5 = 5v 6.5 = 6.5v 8 = 8v 12 = 12v 15 = 15v 24 = 24v 28 = 28v 36 = 36v 48 = 48v product grade temperatures (c) grade operating storage e = - 10 to +100 - 20 to +125 c = - 20 to +100 - 40 to +125 t = - 40 to +100 - 40 to +125 h = - 40 to +100 - 55 to +125 m = - 55 to +100 - 65 to +125 pin style finish blank: short tin/lead l: long tin/lead s: short modumate gold n: long modumate gold f: short rohs gold g: long rohs gold k: extra long rohs gold baseplate blank: slotted 2: threaded 3: through-hole product type v = standard s = enhanced effciency (avail. 12 vout only) applications industrial and process control, distributed power, medical, ate, communications, defense and aerospace. for details on proper operation please refer to the: design guide & applications manual for maxi, mini, micro family. dc-dc converter module 24v input maxi family actual size: 4.6 x 2.2 x 0.5in 117 x 56 x 12,7mm s nr tl cu s c us ?
24v maxi family rev 6.6 vicorpower.com page 2 of 15 01/2016 800 927.9474 parameter min typ max unit notes operating input voltage 18 24 36 v dc these modules will operate at up to 75% of rated power down to 16v in after start up at >18v in input surge withstand 50 v dc <100ms undervoltage turn-on 17.5 17.9 v dc undervoltage turn-off 14.8 15.3 v dc overvoltage turn-off/on 36.3 37.8 39.6 v dc disabled input current 4.0 ma pc pin low parameter min typ max unit notes output voltage setpoint 1% v out nom nominal input; full load; 25c line regulation 0.02 0.20 % low line to high line; full load temperature regulation 0.002 0.005 % / c over operating temperature range power sharing accuracy 2 5 % 10 to 100% of full load of nominal output voltage. for trimming below 90% programming range 10 110 % of nominal, a minimum load of 10% of maximum rated power may be required. +out to -out, +sense to -out C absolute maximum ratings 3.3v -0.5 to 4.7 v dc externally applied 5v -0.5 to 7.0 v dc externally applied 6.5v -0.5 to 9.0 v dc externally applied 8v -0.5 to 10.9 v dc externally applied 12v -0.5 to 16.1 v dc externally applied 15v -0.5 to 20.0 v dc externally applied 24v -0.5 to 31.7 v dc externally applied 28v -0.5 to 36.9 v dc externally applied 36v -0.5 to 47.2 v dc externally applied 48v -0.5 to 62.9 v dc externally applied module input specifications module output specifications electrical characteristics apply over the full operating range of input voltage, output load (resistive) and baseplate temperature, unless otherwise specifed. all temperatures refer to the operating temperature at the center of the baseplate. note: for important information relative to applications where the converter modules are subject to continuous dynamic loading, contact vicor applications engineering at 800-927-9474. parameter min typ max unit baseplate to sink; fat, greased surface 0.08 c/watt baseplate to sink; thermal pad (p/n 20263) 0.07 c/watt baseplate to ambient 4.9 c/watt baseplate to ambient; 1000 lfm 1.1 c/watt thermal capacity 165 watt-sec/c thermal resistance and capacity module family electrical characteristics 24v input
24v maxi family rev 6.6 vicorpower.com page 3 of 15 01/2016 800 927.9474 parameter min typ max unit notes primary side (pc = primary control; pr = parallel) pc bias voltage 5.50 5.75 6.00 v dc pc current = 1.0ma current limit 1.5 2.1 3.0 ma pc voltage = 5.5v during normal operation pc module disable 2.3 2.6 2.9 v dc switch must be able to sink 4ma. see fig. 2 pc module enable delay 4 7 ms pc module alarm 0.5 vavg uv, ov, ot, module fault. see figs. 3 and 5 pc resistance 0.9 1.0 1.1 m see fig. 3, converter off or fault mode pr emitter amplitude 5.7 5.9 6.1 volts pr load >30 , < 30pf pr emitter current 150 ma pr receiver impedance 375 500 625 25c pr receiver threshold 2.4 2.5 2.6 volts minimum pulse width: 20ns pr drive capability 12 modules without pr buffer amplifer secondary side (sc = secondary control) sc bandgap voltage 1.21 1.23 1.25 v dc referenced to Csense sc resistance 990 1000 1010 sc capacitance 0.033 f sc module alarm 0 v dc with open trim; referenced to Csense. see fig. 7 module control specifications module general specifications module family electrical characteristics (cont.) * isolation test voltage, 1 minute or less. note: specifcations are subject to change without notice. parameter min typ max unit notes remote sense (total drop) 0.5 v dc 0.25v per leg (sense leads must be connected to respective, output terminals) isolation test voltage (in to out)* 3000 v rms complies with reinforced insulation requirements isolation test voltage (in to base)* 1500 v rms complies with basic insulation requirements isolation test voltage (out to base)* 500 v rms complies with operational insulation requirements isolation resistance 10 m in to out, in to baseplate, out to baseplate weight (e, c, t grade) 6.5 7.3 8.1 ounces (184.3) (207.5) (230.7) (grams) weight (h, m grade) 7.4 8.2 9.0 ounces (209.3) (232.5) (255.7) (grams) temperature limiting 100 115 c see figs. 3 and 5. do not operate coverter >100c. agency approvals curus, ctvus, ce ul60950-1, en60950-1, csa60950-1, iec60950-1. with appropriate fuse in series with the +input 24v input
24v maxi family rev 6.6 vicorpower.com page 4 of 15 01/2016 800 927.9474 parameter min typ max unit notes effciency s24a3v3c264bl (enhanced effciency) 83.0 86.0 % nominal input; full load; 25c v24a3v3c264bl (standard effciency) 80.0 81.4 ripple and noise 75 94 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 4.14 4.3 4.46 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 8 12 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 80 amps current limit 81.6 92 108 amps output voltage 95% of nominal short circuit current 56 92 108 amps output voltage <250mv 3.3v out , 264w (e.g. s24a3v3c264bl, v24a3v3c264bl) parameter min typ max unit notes effciency s24a3v3c200bl (enhanced effciency) 82.0 86.0 % nominal input; full load; 25c v24a3v3c200bl (standard effciency) 73.9 79.9 ripple and noise 43 54 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 4.48 4.65 4.82 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 6.2 10 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 60.6 amps current limit 61.8 69.7 81.9 amps output voltage 95% of nominal short circuit current 42.4 69.7 81.9 amps output voltage <250mv 3.3v out , 200w (e.g. s24a3v3c200bl, v24a3v3c200bl) parameter min typ max unit notes effciency s24a5c400bl (enhanced effciency) 84.0 86.5 % nominal input; full load; 25c v24a5c400bl (standard effciency) 80.0 84.5 ripple and noise 152 190 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 6.03 6.25 6.47 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 6.8 10.1 watts no load load regulation 0.02 0.25 % no load to full load; nominal input load current 0 80 amps current limit 81.6 92 104 amps output voltage 95% of nominal short circuit current 56 92 104 amps output voltage <250mv 5v out , 400w (e.g. s24a5c400bl, v24a5c400bl) parameter min typ max unit notes effciency s24a5c300bl (enhanced effciency) 82.5 84.4 % nominal input; full load; 25c v24a5c300bl (standard effciency) 82.5 84.4 ripple and noise 120 150 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 6.03 6.25 6.47 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 7.2 8.8 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 60 amps current limit 61.2 69 81 amps output voltage 95% of nominal short circuit current 42 69 81 amps output voltage <250mv 5v out , 300w (e.g. s24a5c300bl, v24a5c300bl) module specific operating specifications 24v input
24v maxi family rev 6.6 vicorpower.com page 5 of 15 01/2016 800 927.9474 parameter min typ max unit notes effciency s24a6v5c400bl (enhanced effciency) 85.0 86.1 % nominal input; full load; 25c v24a6v5c400bl (standard effciency) 85.0 86.1 ripple and noise 220 275 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 7.7 7.98 8.26 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 9.2 10.5 watts no load load regulation 0.02 0.2 % no load to full load; nominal input output current 0 61.5 amps current limit 62.7 70.7 83.1 amps output voltage 95% of nominal short circuit current 43 70.7 83.1 amps output voltage <250mv 6.5v out , 400w (e.g. s24a6v5c400bl, v24a6v5c400bl) parameter min typ max unit notes effciency s24a8c300bl (enhanced effciency) 85.6 86.5 % nominal input; full load; 25c v24a8c300bl (standard effciency) 85.6 86.5 ripple and noise 215 269 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 9.36 9.7 10.1 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 8.7 13.9 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 37.5 amps current limit 38.2 43.1 50.7 amps output voltage 95% of nominal short circuit current 26.2 43.1 50.7 amps output voltage <250mv 8v out , 300w (e.g. s24a8c300bl, v24a8c300bl) module specific operating specifications (cont.) parameter min typ max unit notes effciency s24a12c400bl (enhanced effciency) 86.0 89.5 % nominal input; full load; 25c v24a12c400bl (standard effciency) 87.0 88.3 ripple and noise 250 320 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 13.7 14.3 14.9 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 6.8 10.2 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 33.33 amps current limit 34 38.4 43.5 amps output voltage 95% of nominal short circuit current 23.3 38.4 43.5 amps output voltage <250mv 12v out , 400w (e.g. s24a12c400bl, v24a12c400bl) parameter min typ max unit notes effciency s24a12c500b (enhanced effciency) 86.7 88.2 % nominal input; full load; 25c v24a12c500bl (standard effciency) 86.0 87.5 ripple and noise 272 340 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 13.8 14.3 14.8 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 10.8 12.0 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 41.67 amps current limit 42.5 47.9 56.3 amps output voltage 95% of nominal short circuit current 29.2 47.9 56.3 amps output voltage <250mv 12v out , 500w (e.g. s24a12c500b, v24a12c500bl) 24v input
24v maxi family rev 6.6 vicorpower.com page 6 of 15 01/2016 800 927.9474 module specific operating specifications (cont.) parameter min typ max unit notes effciency 87.3 88.3 % nominal input; full load; 25c ripple and noise 172 215 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 27.1 28.1 29.1 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 11.9 19.1 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 20.83 amps current limit 21.3 24.0 28.1 amps output voltage 95% of nominal short circuit current 14.6 24.0 28.1 amps output voltage <250mv 24v out , 500w (e.g. v24a24c500bl) parameter min typ max unit notes effciency 85.0 86.2 % nominal input; full load; 25c ripple and noise 160 200 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 17.1 17.8 18.5 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 8.1 10 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 20 amps current limit 20.4 23 27 amps output voltage 95% of nominal short circuit current 14 23 27 amps output voltage <250mv 15v out , 300w (e.g. v24a15c300bl) parameter min typ max unit notes effciency 88.0 89.0 % nominal input; full load; 25c ripple and noise 60 75 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 17.1 17.8 18.5 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 6.3 9.4 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 26.67 amps current limit 27.2 30.7 34.8 amps output voltage 95% of nominal short circuit current 18.6 30.7 37.9 amps output voltage <250mv 15v out , 400w (e.g. v24a15c400bl) parameter min typ max unit notes effciency s24a12c300bl (enhanced effciency) 88.0 89.5 % nominal input; full load; 25c v24a12c300bl (standard effciency) 87.0 88.2 ripple and noise 196 245 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 13.7 14.3 14.9 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 6.9 8.6 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 25 amps current limit 25.5 28.8 33.8 amps output voltage 95% of nominal short circuit current 17.5 28.8 33.8 amps output voltage < 250mv 12v out , 300w (e.g. s24a12c300bl, v24a12c300bl) 24v input
24v maxi family rev 6.6 vicorpower.com page 7 of 15 01/2016 800 927.9474 parameter min typ max unit notes effciency 86.0 87.8 % nominal input; full load; 25c ripple and noise 172 215 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 31.5 32.7 33.9 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 6.3 9.5 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 14.29 amps current limit 14.5 16.4 19.4 amps output voltage 95% of nominal short circuit current 10 16.4 19.4 amps output voltage <250mv 28v out , 400w (e.g. v24a28c400bl) module specific operating specifications (cont.) parameter min typ max unit notes effciency 86.8 88.2 % nominal input; full load; 25c ripple and noise 85 107 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 27.1 28.1 29.1 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 7.8 10 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 12.5 amps current limit 12.7 14.4 16.9 amps output voltage 95% of nominal short circuit current 8.75 14.4 16.9 amps output voltage <250mv 24v out , 300w (e.g. v24a24c300bl) parameter min typ max unit notes effciency 88.0 89.1 % nominal input; full load; 25c ripple and noise 80 100 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 27.1 28.1 29.1 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 11 12 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 16.67 amps current limit 17 19.2 23.4 amps output voltage 95% of nominal short circuit current 2.25 19.2 23.4 amps output voltage <250mv 24v out , 400w (e.g. v24a24c400bl) parameter min typ max unit notes effciency 86.0 88.0 % nominal input; full load; 25c ripple and noise 172 215 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 31.5 32.7 33.9 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 13.5 14.8 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 17.9 amps current limit 18.3 20.6 24.2 amps output voltage 95% of nominal short circuit current 12.5 20.6 24.2 amps output voltage <250mv 28v out , 500w (e.g. v24a28c500bl) 24v input
24v maxi family rev 6.6 vicorpower.com page 8 of 15 01/2016 800 927.9474 parameter min typ max unit notes effciency 87.0 88.0 % nominal input; full load; 25c ripple and noise 100 125 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 31.5 32.7 33.9 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 7.1 9.3 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 10.71 amps current limit 10.9 12.3 14.5 amps output voltage 95% of nominal short circuit current 3 12.3 14.5 amps output voltage <250mv 28v out , 300w (e.g. v24a28c300bl) parameter min typ max unit notes effciency 86.0 88.0 % nominal input; full load; 25c ripple and noise 120 150 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 40.4 41.9 43.4 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 10 13 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 11.11 amps current limit 11.3 12.8 15 amps output voltage 95% of nominal short circuit current 7.77 12.8 15 amps output voltage <250mv 36v out , 400w (e.g. v24a36c400bl) parameter min typ max unit notes effciency 87.0 88.3 % nominal input; full load; 25c ripple and noise 80 100 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 40.4 41.9 43.4 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 9.8 12 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 8.33 amps current limit 8.49 9.58 11.3 amps output voltage 95% of nominal short circuit current 5.83 9.58 11.3 amps output voltage <250mv 36v out , 300w (e.g. v24a36c300bl) parameter min typ max unit notes effciency 84.7 86.7 % nominal input; full load; 25c ripple and noise 160 200 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 53.8 55.8 57.8 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 11.8 12.7 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 8.33 amps current limit 8.49 9.58 11.3 amps output voltage 95% of nominal short circuit current 4.79 9.58 11.3 amps output voltage <250mv 48v out , 400w (e.g. v24a48c400bl) module specific operating specifications (cont.) 24v input
24v maxi family rev 6.6 vicorpower.com page 9 of 15 01/2016 800 927.9474 module specific operating specifications (cont.) parameter min typ max unit notes effciency 86.0 87.1 % nominal input; full load; 25c ripple and noise 180 225 mv p-p; nominal input; full load; 20mhz bandwidth output ovp setpoint 53.7 55.7 57.7 volts 25c; recycle input voltage or pc to restart (>100ms off) dissipation, standby 7.7 10 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 6.25 amps current limit 6.37 7.19 8.44 amps output voltage 95% of nominal short circuit current 4.37 7.19 8.44 amps output voltage <250mv 48v out , 300w (e.g. v24a48c300bl) 24v input
24v maxi family rev 6.6 vicorpower.com page 10 of 15 01/2016 800 927.9474 +in pc pr ?in +out +s sc ?s ?out c3* 4.7nf c2* 4.7nf for c1 ? c5, keep leads and connections short. c5* 4.7nf c4* 4.7nf f1* c1* 0.2f figure 1 basic module operation requires fusing, grounding, bypassing capacitors.* see maxi, mini, micro design guide. basic module operation comprehensive online application information the design guide and applications manual includes: ? application circuits ? design requirements ? emc considerations ? current sharing in power arrays ? thermal performance information ? recommended soldering methods ? accessory modules C fltering, rectifcation, front-ends ? mounting options ? ...and more. also at vicorpower.com ? powerbench online confgurators ? over 20 application notes ? online calculators C thermal, trimming, hold-up ? pdf data sheets for all vicor products click here to view design guide 24v input
24v maxi family rev 6.6 vicorpower.com page 11 of 15 01/2016 800 927.9474 module enable/disable the module may be disabled by pulling pc below 2.3v with respect to the Cinput. this may be done with an open collector transistor, relay, or optocoupler. multiple converters may be disabled with a single transistor or relay either directly or via oring diodes. see figure 2. primary auxiliary supply at 5.7v, pc can source up to 1.5ma. in the example shown in figure 4, pc powers a module enabled led. module alarm the module contains watchdog circuitry which monitors input voltage, operating temperature and internal operating parameters. in the event that any of these parameters are outside of their allowable operating range, the module will shut down and pc will go low. pc will periodically go high and the module will check to see if the fault (as an example, overtemperature) has cleared. if the fault has not been cleared, pc will go low again and the cycle will restart. the sc pin will go low in the event of a fault and return to its normal state after the fault has been cleared. see figures 3 and 5. primary control - pc pin +in pc pr ?in disab le disab le = pc <2.3 v figure 2 module enable/disable figure 4 led on-state indicator +in pc pr ?in 4 k "module enab led" +in pc pr ?in optocoupler 4 k alar m 1.00v +out +s sc ?s ?out +in pc pr ?in comparato r +out +s sc ?s ? out +in pc pr ?in input undervoltage 2-20 ms typ. f (v in ) auto restart 5.7 vdc (0-3 ma) 50 sw2 sw3 1.23 vdc 6 k 1 k sw1 sw1, 2, & 3 shown in "fault" position input overvoltage (see note 1) overtemperature module faults 1 not applicable for 300 vdc input family 1 m figure 3 pc/sc module alarm logic figure 6 isolated on-state indicator 2?20 ms typ . f ault sc pc 1.23 v 5.7 v 40 s typ . figure 5 pc/sc module alarm timing figure 7 secondary side on-state indicator 24v input
24v maxi family rev 6.6 vicorpower.com page 12 of 15 01/2016 800 927.9474 parallel operation the pr pin supports paralleling for increased power with n+1 (n+m) redundancy. modules of the same input voltage, output voltage, and power level will current share if all pr pins are suitably interfaced. compatible interface architectures include the following: ac coupled single-wire interface. all pr pins are connected to a single communication bus through 0.001f (500v) capacitors. this interface supports current sharing and is fault tolerant except for the communication bus. up to three converters may be paralleled by this method. see figure 9. transformer coupled interface. for paralleling four or more converters a transformer coupled interface is required. see figure 10. for details on parallel operation please refer to the design guide & applications manual for maxi, mini, micro family. figure 9 ac coupled single-wire interface * see maxi, mini, micro design guide +in pc pr Cin +in pc pr Cin module 2 module 1 + p arallel bus C 0.2 f 0.001 f 0.2 f 0.001 f lo w inductance gr o und plane or b us 4.7 nf 4.7 nf 4.7 nf 4.7 nf z1 * z1 * +in pc pr Cin +in pc pr Cin module 2 module 1 t1 t2 + C 0.2 f 0.2 f pa rallel bus 4.7 nf 4.7 nf 4.7 nf 4.7 nf z1 * z1 * figure 10 transformer-coupled interface parallel bus - pr pin output voltage programming the output voltage of the converter can be adjusted or programmed via fxed resistors, potentiometers or voltage dacs. see figure 8. figure 8 output voltage trim down and trim up circuit ?out +s sc error amplifier + 0.033 uf ? + -s +out load rd tr im do wn ru tr im up 1.23 v 1 k 100 typ . 1,000 v out vnom ? v out r d (ohms) = 1,000 (v out ?1.23) vnom 1.23 (v out ? vnom) r u (ohms) = ? 1,000 trim down 1. this converter is not a constant power device C it has a constant current limit. hence, available output power is reduced by the same percentage that output voltage is trimmed down. do not exceed maximum rated output current. 2. the trim down resistor must be connected between the sc and -s pins. do not bypass the sc pin directly with a capacitor. trim up 1. the converter is rated for a maximum delivered power. to ensure that maximum rated power is not exceeded, reduce maximum output current by the same percentage increase in output voltage. 2. the trim up resistor must be connected between the sc and +s pins. do not bypass the sc pin directly with a capacitor. 3. do not trim the converter above maximum trim range (typically +10%) or the output over voltage protection circuitry may be activated. secondary control - sc pin trim resistor values calculated automatically: on-line calculators for trim resistor values are available on the vicor website at: asp.vicorpower.com/calculators/calculators.asp?calc=1 resistor values can be calculated for fixed trim up, fixed trim down and for variable trim up or down. 24v input
24v maxi family rev 6.6 vicorpower.com page 13 of 15 01/2016 800 927.9474 module 2 module 1 module n+1 +out +s sc ?s ?out load +s ?s +out +s sc ?s ?out +out +s sc ?s ?out figure 11 n+1 module array output connections ? the +out and Cout power buses should be designed to minimize and balance parasitic impedance from each module output to the load. ? the +sense pins must be tied together to form a +sense bus. this must be kelvin connected to +out at a single point. the Csense pins should be tied together to form a Csense bus. this must be kelvin connected to Cout at a single point. ? at the discretion of the power system designer, a subset of all modules within an array may be confgured as slaves by connecting sc to Cs. ? oring diodes may be inserted in series with the +out pins of each module to provide module output fault tolerance. ? the +sense and -sense leads should be routed in close proximity to each other on the printed circuit board. if wires are used to connect the converters on a pcb to an external load, the sense leads should be twisted together to reduce noise pickup. designator description finish notes (none) short tin/lead requires in-board, mounting l long tin/lead on-board mounting for 0.065 boards s short modumate gold surfmate or in-board socket mounting n long modumate gold on-board socket mounting f short rohs gold select for rohs compliant in-board solder, socket, or surfmate mounting g long rohs gold select for rohs compliant on-board solder or socket mounting k extra long rohs gold select for rohs compliance on-board mounting for thicker pcbs (not intended for socket or surfmate mounting) * pin style designator follows the b after the output power and precedes the baseplate designator. ex. v48a12t500bn2 long modumate pins parallel bus output pin styles* 24v input
24v maxi family rev 6.6 vicorpower.com page 14 of 15 01/2016 800 927.9474 all markings this surf ac e pins styles solder:tin/lead pla ted moduma te: gold pla ted copper rohs: gold pla ted copper aluminum basepla te 0.195 4,95 1.400* 35,56 1.000* 25,40 0.700* 17,78 0.400* 10,16 3.844** 97,64 4.200* 106,68 1.790** 45,47 0.06 1,5 r (4x) 0.178 4,52 5 6 7 8 9 12 34 0.003 0,08 * deno tes t ol = pla ted thru hole dia pcb thickness 0.062 0.010 1,57 0,25 short pin style 0.094 0.003 2,39 0,08 0.194 0.003 4,93 0,08 long pin style 0.094 0.003 2,39 0,08 0.194 0.003 4,93 0,08 inbo ard solder mount 0.45 11,5 socket headers (surfa ce mount) kit includes input & output p/n 16017 onbo ard solder mount (7x) (2x) onbo ard socket surfa ce mount 0.56 14,2 surfa ce mount n/a n/a inbo ard socket mount 0.46 11,7 socket 0.183 0.003 4,65 0,08 0.266 0.003 6,76 0,08 sockets 0.080" dia. pins (7x) p/n 13632 (100 pieces) 0.180" dia. pins (2x) p/n 13634 (100 pieces) kit # 16015 includes (7x) 0.080" dia. pins & (2x) 0.180" dia. pins 0.53 13,5 **pcb window for soldering methods and procedures please refer to: the maxi, mini, micro design guide. mechanical drawings no tes: 1. ma terial: base: 6000 series al uminum pins: ro hs pins gold plat e 30 micro inch min; non-ro hs pins: tin/lead 90/10 bright 2. dimensions and va l ues in bra ckets are metric 3. manuf ac turing c ontrol is in pla ce to ensure that the sp a cing between the modules label surf a ce to the printed circuit bo ard of the applic at ion ranges from direc t co nt ac t (zero), to the maximum gap as ca l cula ted from the t olerance st ac k -up and is no t subjec t nega tive t olerance ac cumula tion dimension l pin short ? .55.015 [14.0.38] pin l ong?? .63.015 [16.0.38] pin extra l ong???- .71.015 [18.0.38] figure 12 module outline figure 13 pcb mounting specifcations converter pins no. function label n ia ontol aallel n ut ene econa ontol ene ut nle oteie eciie ienion ae in ince decimals tol. angles . . . . . . 24v input
24v maxi family rev 6.6 vicorpower.com page 15 of 15 01/2016 800 927.9474 vicors comprehensive line of power solutions includes high density ac-dc and dc-dc modules and ac - cessory components, fully confgurable ac-dc and dc-dc power supplies, and complete custom power systems. information furnished by vicor is believed to be accurate and reliable. however, no responsibility is assumed by vicor for its use. vicor makes no representations or warranties with respect to the accuracy or completeness of the contents of this publication. vicor reserves the right to make changes to any products, specifcations, and product descriptions at any time without notice. information published by vicor has been checked and is believed to be accurate at the time it was printed; however, vicor assumes no responsibility for inaccuracies. testing and other quality controls are used to the extent vicor deems necessary to support vicors product warranty. except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. specifcations are subject to change without notice. vicors standard terms and conditions all sales are subject to vicors standard terms and conditions of sale, which are available on vicors webpage or upon request. product warranty in vicors standard terms and conditions of sale, vicor warrants that its products are free from non-conformity to its standard specifcations (the ex - press limited warranty). this warranty is extended only to the original buyer for the period expiring two (2) years after the date of shipment and is not transferable. unless otherwise expressly stated in a written sales agreement signed by a duly authorized vicor signatory, vicor disclaims all representations, liabilities, and warranties of any kind (whether arising by implication or by operation of law) with respect to the products, including, without limitation, any warranties or representations as to merchantability, fitness for particular purpose, infringement of any patent, copyright, or other intellectual property right, or any other matter. this warranty does not extend to products subjected to misuse, accident, or improper application, maintenance, or storage. vicor shall not be liable for collateral or consequential damage. vicor disclaims any and all liability arising out of the application or use of any product or circuit and assumes no liability for applications assistance or buyer product design. buyers are responsible for their products and applications using vicor products and components. prior to using or distributing any products that include vicor components, buyers should provide adequate design, testing and operat - ing safeguards. vicor will repair or replace defective products in accordance with its own best judgment. for service under this warranty, the buyer must contact vicor to obtain a return material authorization (rma) number and shipping instructions. products returned without prior authorization will be returned to the buyer. the buyer will pay all charges incurred in returning the product to the factory. vicor will pay all reshipment charges if the product was defective within the terms of this warranty. life support policy vicors products are not authorized for use as critical components in life support devices or systems without the express prior written approval of the chief executive officer and general counsel of vicor corporation. as used herein, life support devices or systems are devices which (a) are intended for surgical implant into the body, or (b) support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a signifcant injury to the user. a critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness. per vicor terms and conditions of sale, the user of vicor products and components in life support applications assumes all risks of such use and indemnifes vicor against all liability and damages. intellectual property notice vicor and its subsidiaries own intellectual property (including issued u.s. and foreign patents and pending patent applications) relating to the products described in this data sheet. no license, whether express, implied, or arising by estoppel or otherwise, to any intellectual property rights is granted by this document. interested parties should contact vicors intellectual property department. vicor corporation 25 frontage road andover, ma, usa 01810 tel: 800-735-6200 fax: 978-475-6715 email customer service: custserv@vicorpower.com technical support: apps@vicorpower.com 24v input

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