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vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 page 1 of 11 set your site on vicor at vicorpower.com data sheet 48v input maxi family dc-dc converter module features ? rohs compliant (with f or g pin option) ? dc input range: 36 C 75 v ? input surge withstand: 100 v for 100 ms ? dc output: 3.3 C 48 v ? programmable output: 10 to 110% ? regulation: 0.3% no load to full load ? efficiency: up to 89% ? maximum operating temp: 100c, full load ? power density: up to 100 w per cubic inch ? height above board: 0.43 in. (10,9 mm) ? parallelable, with n+m fault tolerance ? low noise zcs/zvs architecture product overview these dc-dc converter modules use advanced power processing, control and packaging technologies to provide the performance, flexibility, reliability and cost effectiveness of a mature power component. high frequency zcs/zvs switching provides high power density with low noise and high efficiency. applications distributed power, medical, ate, communications, defense, aerospace parameter rating unit notes +in to ?in voltage -0.5 to +105 vdc pc to ?in voltage -0.5 to +7.0 vdc pr to ?in voltage -0.5 to +7.0 vdc sc to -out voltage -0.5 to +1.5 vdc -sense to -out voltage 1.0 vdc isolation voltage in to out 3000 vrms test voltage in to base 1500 vrms test voltage out to base 500 vrms 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 for a description of pin options, see page 9. baseplate options include slotted flanges, threaded and through-hole. see page 10 for dimensions. for other package sizes and power levels, see the mini (half size) and micro (quarter size) datasheets. part numbering e.g. v48a12t500bl2 v48a b shown actual size: 4.6 x 2.2 x 0.5 in 117 x 56 x 12,7 mm absolute maximum ratings output voltage 3 v 3 =3.3 v 5 =5 v 8 =8 v 12 = 12 v 15 = 15 v 24 = 24 v 28 = 28 v 36 = 36 v 48 = 48 v 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 output power vout pout 3.3 v 264 w 5 v 400 w 8 v 400 w 12 v 500 w 15 v 500 w 24 v 500 w 28 v 500 w 36 v 500 w 48 v 500 w pin style blank: short tin/lead l: long tin/lead s: short modumate n: long modumate f: short rohs g: long rohs baseplate blank: slotted 2: threaded 3: through-hole
vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 page 2 of 11 set your site on vicor at vicorpower.com parameter min typ max unit notes operating input voltage 36 48 75 vdc input surge withstand 100 vdc <100 ms undervoltage turn-on 34.9 35.7 vdc undervoltage turn-off 29.4 30.5 vdc overvoltage turn-off/on 75.7 78.8 82.5 vdc disabled input current 2.5 ma pc pin low parameter min typ max unit notes output voltage setpoint 1% vout nom nominal input; full load; 25c line regulation 0.02 0.2 % 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 programming range 10 110 % of nominal output voltage. for trimming below 90% of nominal, a minimum load of 10% of maximum rated power may be required. +out to ?out, +sense to ?out ? absolute maximum ratings 3.3 v -0.5 to 4.7 vdc externally applied 5 v -0.5 to 7.0 vdc externally applied 12 v -0.5 to 16.1 vdc externally applied 15 v -0.5 to 20.0 vdc externally applied 24 v -0.5 to 31.7 vdc externally applied 28 v -0.5 to 36.9 vdc externally applied 36 v -0.5 to 47.1 vdc externally applied 48 v -0.5 to 62.9 vdc externally applied module input specifications module output specifications electrical characteristics apply over the full operating range of input voltage, output load (resistive) and baseplate temperat ure, unless otherwise specified. 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; flat, greased surface 0.08 c/watt baseplate to sink; thermal pad (p/n 20265) 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
vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 page 3 of 11 set your site on vicor at vicorpower.com parameter min typ max unit notes primary side (pc = primary control; pr = parallel) pc bias voltage 5.50 5.75 6.00 vdc pc current = 1.0 ma current limit 1.5 2.1 3.0 ma pc voltage = 5.5 v pc module disable 2.3 2.6 2.9 vdc must be able to sink 4 ma. see fig. 1 pc module enable delay 4 7 ms pc module alarm 0.5 vavg uv, ov, ot, module fault. see figs. 2 and 4 pc resistance 0.9 1.0 1.1 m see fig. 2 pr emitter amplitude 5.7 5.9 6.1 volts pr load >30 , < 30 pf 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: 20 ns pr drive capability 12 modules without pr buffer amplifier secondary side (sc = secondary control) sc bandgap voltage 1.21 1.23 1.25 vdc referenced to ?sense sc resistance 990 1000 1010 sc capacitance 0.033 f sc module alarm 0 vdc with open trim; referenced to ?sense. see fig. 6 parameter min typ max unit notes remote sense (total drop) 0.5 vdc 0.25 v per leg (senses must be closed) isolation voltage (in to out) 3000 vrms complies with reinforced insulation requirements isolation voltage (in to base) 1500 vrms complies with basic insulation requirements isolation voltage (out to base) 500 vrms complies with operational insulation requirements isolation resistance (in to out) 10 m weight 7.4 8.2 9.0 ounces (209.3) (232.5) (255.7) (grams) temperature limiting 100 115 c see figs. 2 and 4 agency approvals curus, tv, ce ul60950-1, en60950-1, csa60950-1, iec60950-1. with appropriate fuse in series with the +input module control specifications module general specifications note: specifications are subject to change without notice. module family electrical characteristics (cont.)
vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 page 4 of 11 set your site on vicor at vicorpower.com parameter min typ max unit notes efficiency 79 80.8 % nominal input; full load; 25c ripple and noise 90 113 mv p-p; nominal input; full load; 20 mhz bandwith output ovp setpoint 4.14 4.3 4.46 volts 25c; recycle input voltage to restart (>100 ms off) dissipation, standby 8 11.1 watts no load load regulation 0.1 0.3 % no load to full load; nominal input load current 0 80 amps current limit 81.6 94.7 108 amps output voltage 95% of nominal short circuit current 56 92 112 amps output voltage < 250 mv module specific operating specifications 3.3 vout, 264 w (e.g. v48a3v3c264bl) parameter min typ max unit notes efficiency 83.5 84.5 % nominal input; full load; 25c ripple and noise 80 100 mv p-p; nominal input; full load; 20 mhz bandwith output ovp setpoint 6.03 6.25 6.47 volts 25c; recycle input voltage to restart (>100 ms off) dissipation, standby 7.3 11 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 92 104 amps output voltage 95% of nominal short circuit current 8 92 104 amps output voltage < 250 mv 5 vout, 400 w (e.g. v48a5c400bl) parameter min typ max unit notes efficiency 83 84.8 % nominal input; full load; 25c ripple and noise 250 313 mv p-p; nominal input; full load; 20 mhz bandwith output ovp setpoint 9.36 9.7 10.1 volts 25c; recycle input voltage to restart (>100 ms off) dissipation, standby 13 14.5 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 50 amps current limit 51 57.5 67.5 amps output voltage 95% of nominal short circuit current 35 57.5 67.5 amps output voltage <250 mv 8 vout, 400 w (e.g. v48a8c400bl) parameter min typ max unit notes efficiency 86 88 % nominal input; full load; 25c ripple and noise 200 250 mv p-p; nominal input; full load; 20 mhz bandwith output ovp setpoint 13.7 14.3 14.9 volts 25c; recycle input voltage to restart (>100 ms off) dissipation, standby 10.8 15 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 48 54.3 amps output voltage 95% of nominal short circuit current 29.1 48 54.3 amps output voltage < 250 mv 12 vout, 500 w (e.g. v48a12c500bl) parameter min typ max unit notes efficiency 87 89.5 % nominal input; full load; 25c ripple and noise 85 106 mv p-p; nominal input; full load; 20 mhz bandwith output ovp setpoint 17.1 17.8 18.5 volts 25c; recycle input voltage to restart (>100 ms off) dissipation, standby 10 16 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 33.33 amps current limit 33.9 38.3 45 amps output voltage 95% of nominal short circuit current 3.8 38.3 46.7 amps output voltage < 250 mv 15 vout, 500 w (e.g. v48a15c500bl)
vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 page 5 of 11 set your site on vicor at vicorpower.com module specific operating specifications parameter min typ max unit notes efficiency 86 87.5 % nominal input; full load; 25c ripple and noise 75 94 mv p-p; nominal input; full load; 20 mhz bandwith output ovp setpoint 27.1 28.1 29.1 volts 25c; recycle input voltage to restart (>100 ms off) dissipation, standby 8 12 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 23.4 25.1 amps output voltage 95% of nominal short circuit current 14.6 23.4 25.1 amps output voltage < 250 mv 24 vout, 500 w (e.g. v48a24c500bl) parameter min typ max unit notes efficiency 88.5 89.4 % nominal input; full load; 25c ripple and noise 50 63 mv p-p; nominal input; full load; 20 mhz bandwith output ovp setpoint 31.5 32.7 33.9 volts 25c; recycle input voltage to restart (>100 ms off) dissipation, standby 7 10.5 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 17.86 amps current limit 18.2 20.6 23.3 amps output voltage 95% of nominal short circuit current 12.5 20.6 24.2 amps output voltage <250 mv 28 vout, 500 w (e.g. v48a28c500bl) parameter min typ max unit notes efficiency 87.5 86.8 % nominal input; full load; 25c ripple and noise 120 150 mv p-p; nominal input; full load; 20 mhz bandwith output ovp setpoint 40.4 41.9 43.4 volts 25c; recycle input voltage to restart (>100 ms off) dissipation, standby 9.9 10.9 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 13.89 amps current limit 14.1 16 18.8 amps output voltage 95% of nominal short circuit current 9.73 16 18.8 amps output voltage <250 mv 36 vout, 500 w (e.g. v48a36c500bl) parameter min typ max unit notes efficiency 88.7 89.7 % nominal input; full load; 25c ripple and noise 218 273 mv p-p; nominal input; full load; 20 mhz bandwith output ovp setpoint 53.7 55.7 57.7 volts 25c; recycle input voltage to restart (>100 ms off) dissipation, standby 7.6 11.4 watts no load load regulation 0.02 0.2 % no load to full load; nominal input load current 0 10.42 amps current limit 10.6 12 13.6 amps output voltage 95% of nominal short circuit current 6.2 12 14.8 amps output voltage < 250 mv 48 vout, 500 w (e.g. v48a48c500bl)
vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 page 6 of 11 set your site on vicor at vicorpower.com module enable/disable the module may be disabled by pulling pc below 2.3 v 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 1. primary auxiliary supply at 5.7 v, pc can source up to 1.5 ma. in the example shown in figure 3, 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 2 and 4. +in pc pr ?in di sab le di sab le = pc <2. 3 v figure 1 module enable/disable. figure 3 led on-state indicator. +in pc pr ?in 4 k "mod u le en ab led" +in pc pr ?in optoco u pler 4 k al a rm 1.00v +out + s s c ? s ?out comp a r a tor +out +s sc ? ?out +in pc pr ?n 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 2 pc/sc module alarm logic. figure 5 isolated on-state indicator. 2?20 m s typic a l f au lt s c pc 1.2 3 v 5.7 v 40 s typ. figure 4 pc/sc module alarm timing. figure 6 secondary side on-state indicator. control functions - pc pin
vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 page 7 of 11 set your site on vicor at vicorpower.com output voltage programming the output voltage of the converter can be adjusted or programmed via fixed resistors, potentiometers or voltage dacs. see figures 7 and 8. figure 8 output voltage trim up circuit. figure 7 output voltage trim down circuit. +out + s s c ? s ?out r u trim up lo a d error amp 1 k 1.2 3 v 0.0 33 f 1,000 (vo u t ?1.2 3 ) vnom 1.2 3 (vo u t ? vnom) r u (ohm s ) = ? 1,000 lo a d +out + s s c ? s ?out r d trim down error amp 1 k 1.2 3 v 0.0 33 f 1,000 vo u t vnom ? vo u t r d (ohm s ) = 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 to the Csense pin. 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 to the +sense pin. 3. do not trim the converter above maximum trim range (typically +10%) or the output over voltage protection circuitry may be activated. control functions - sc pin trim resistor values calculated automatically: on-line calculators for trim resistor values are available on the vicor website at: vicorpower.com/tools . resistor values can be calculated for fixed trim up, fixed trim down and for variable trim up or down. in addition to trimming information, the web site and the applications manual also include design tips, applications circuits, emc suggestions, thermal design guidelines and pdf data sheets for all available vicor products.
vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 page 8 of 11 set your site on vicor at vicorpower.com parallel operation the pr pin supports paralleling for increased power with n+1 (n+m) redundancy and phased array capability. 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: dc coupled single-wire interface. all pr pins are directly connected to one another. this interface supports current sharing but is not fault tolerant. negative in pins must be tied to the same electric potential. up to three converters may be paralleled by this method. see figure 9. ac coupled single-wire interface. all pr pins are connected to a single communication bus through 0 . 001 f (500 v) 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 10. transformer coupled interface. for paralleling four or more converters a transformer coupled interface is required. for details on this configuration please refer to the design guide referenced in the following technical information section. technical information for additional technical information contained in the design guide and applications manual for maxi, mini, micro family dc-dc converters and accessory modules , click on the link below: http://www.vicorpower.com/mmmguide figure 9 dc coupled single-wire interface. +in pc pr ?in module 2 ( u p to 12) +in pc pr ?in module 1 gro u nd pl a ne +in pc pr ?in module 2 ( u p to 12) +in pc pr ?in module 1 gro u nd pl a ne figure 10 ac coupled single-wire interface. 0.001f 0.001f control functions - pr pin
vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 page 9 of 11 set your site on vicor at vicorpower.com +out + s s c ? s ?out + s en s e from other mod u le s in the a rr a y figure 12 or ing diodes connections. module 2 module 1 module n+1 +out + s s c ? s ?out lo a d + s ? s + s ? s + s ? s +out + s s c ? s ?out +out + s s c ? s ?out figure 11 n+1 module array output c onnections. ? the +out and ?out power buses should be designed to minimize and balance parasitic impedance from each module output to the load. ? the +sense pins should be tied to the same point on the +out power bus; the ?sense pins should be tied to the same point on the ?out power bus. ? at the discretion of the power system designer, a subset of all modules within an array may be configured as slaves by shorting sc to ?s. ? or?ing diodes may be inserted in series with the +out pins of each module to provide module output fault tolerance. designator description notes (none) short tin/lead requires in-board, mounting l long tin/lead on-board mounting for 0.065" boards s short modumate surfmate or in-board socket mounting n long modumate on-board socket mounting f short rohs select for rohs compliant in-board solder, socket, or surfmate mounting g long rohs select for rohs compliant on-board solder or socket mounting * pin style designator follows the ?b? after the output power and precedes the baseplate designator. ex. v48a12t500bn2 ? long modumate pins control functions - pr pin (cont.) pin styles*
vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 page 10 of 11 set your site on vicor at vicorpower.com all markings this surface pins styles solder:tin/lead hot solder dipped modumate: gold plated copper rohs: gold plated copper aluminum baseplate 0.195 4,95 1.400 * 3 5,56 1.000 * 25,40 0.700 * 17,7 8 0.400 * 10,16 3 . 8 44 ** 97,64 4.200 * 106,6 8 1.790 ** 45,47 0.06 1,5 r (4x) 0.17 8 4,52 5 6 7 8 9 12 3 4 0.00 3 0,0 8 * denote s tol = plated thru hole dia pcb thickne ss 0.062 0.010 1,57 0,25 s hort pin s tyle 0.094 0.00 3 2, 3 9 0,0 8 0.194 0.00 3 4,9 3 0,0 8 long pin s tyle 0.094 0.00 3 2, 3 9 0,0 8 0.194 0.00 3 4,9 3 0,0 8 inboard s older mount 0.4 3 10,9 onboard s older mount (7x) (2x) 0.5 3 1 3 ,5 ** pcb window converter pins no. function label 1+in + 2 primary pc control 3 parallel pr 4?in ? 5?out ? 6 ?sense ?s 7 secondary sc control 8 +sense +s 9+out + for soldering methods and procedures please refer to the maxi, mini, micro design guide . mechanical drawings figure 13 module outline figure 14 pcb mounting specifications unless otherwise specified, dimensions are in inches mm decimals tol. angles 0.xx 0.01 0,25 1 0.xxx 0.005 0,127
vicor corp. tel: 800-735-6200, 978-470-2900 fax: 978-475-6715 48v maxi family rev. 7.5 9/09 set your site on vicor at vicorpower.com 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 vicors comprehensive line of power solutions includes high density ac-dc and dc-dc modules and accessory components, fully configurable 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 components are not designed to be used in applications, such as life support systems, wherein a failure or malfunction could result in injury or death. all sales are subject to vicors terms and conditions of sale, which are available upon request. specifications are subject to change without notice. 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. interested parties should contact vicor's intellectual property department. warranty vicor products are guaranteed for two years from date of shipment against defects in material or workmanship when in normal use and service. this warranty does not extend to products subjected to misuse, accident, or improper application or maintenance. vicor shall not be liable for collateral or consequential damage. this warranty is extended to the original purchaser only. except for the foregoing express warranty, vicor makes no warranty, express or implied, including, but not limited to, the warranty of merchantability or fitness for a particu- lar purpose. vicor will repair or replace defective products in accordance with its own best judgement. 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. information published by vicor has been carefully checked and is believed to be accurate; however, no responsibility is assumed for inaccuracies. vicor reserves the right to make changes to any products without further notice to improve reliabilit y, function, or design. vicor does not assume any liability arising out of the application or use of any product or circuit; neith er does it convey any license under its patent rights nor the rights of others. vicor general policy does not recommend the use of its components in life support applications wherein a failure or malfunction may directly threaten life or injury. per vicor terms and conditions of sale, the user of vicor components in life support applications assumes all risks of such use and indemnifies vicor against all damages.

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