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embedded power for business-critical continuity total power: -- input voltage: -- # of outputs: -- rev. 12.12.07 quarter-brick series 1 of 12 quarter-brick series semi-regulated 12 volt output the semi-regulated, wide input quarter-brick intermediate bus converter (ibc) model is a new high efficiency, open-frame, isolated, 28a converter in an industry standard quarter-brick footprint. this ibc provides designers with an extremely energy- efficient, cost effective solution for main on-board power source in 12vdc distributed power systems. in these systems, the ibc is intended primarily for powering multiple downstream non- isolated point-of-load (pol) converters. operating from a 36 to 75vdc supply, this converter will also optimize the performance of its downstream pol converters by maintaining a constant output voltage independent of line fluctuations that are common in telecom applications. additionally, a patent pending, full wavecoupled inductor topology yields some of the highest full load efficiencies in the industry. all quarter-brick converters have, as standard features, remote on/off capability, overcurrent, overvoltage and undervoltage protection and full international safety approval including en60950-1 vde and ul/cul60950-1. quarter-brick series special features ? high efficiency topology and high output current ? low profile, 0.40in (10.2mm) height ? industry standard 1/4 brick footprint ? wide input range: 36v to 75v ? wide operating ambient tem- perature range, -40c to +85c ? no optocouplers, fast transient response ? basic insulation ? overvoltage and overtempera- ture protection ? remote on/off ? approvals to en60950-1 vde and ul/cul60950-1 ? 100v, 100ms input voltage transients rated ? monotonic startup into normal and prebiased loads ? parallelable with droop current share ? 2 year warranty total power: 336w input voltage: 36-75vdc # of outputs: semi-regulated notice some models listed in this document have been discontinued please contact your local artesyn representative or use the on line model number search tool at http://www.artesyn.com/powergroup/products.htm to find a suitable alternative.
rev.12.12.07 quarter-brick series 2 of 12 technical reference note - quarter-brick series semi-regulated 12 volt output characteristic symbol min typ max units notes and conditions input voltage - turn on v in (on) 34.5 36 v dc input voltage - turn off v in (off) 32 33 v dc turn on delay - enabled, t delay (power) 15 25 msec with remote on/off signal then power applied asserted, time from when v in > v in (oper) until v out is within total regulation band turn on delay - power t delay 5 8 msec with v in = v in (nom) , then applied, then enabled remote on/off asserted, time until v o is within total error band rise time t rise 3 6 msec from 10% to 90%, full resistive load, no external capacitance stresses in excess of the maximum ratings can cause permanent damage to the device. operation of the device is not implied at these or any other conditions in excess of those given in the specification. exposure to absolute maximum ratings can adversely affect device reliability. all specifications are typical at nominal input vin = 48 v, and with full rated resistive load at 25 ? c ambient unless otherwise specified. absolute maximum ratings turn on/off characteristic symbol min typ max units notes and conditions input voltage - operating v in (oper) 36 48 75 v dc input current - no load l in 120 140 ma dc v in (min) to v in (max) , enabled input current - quiescent l in (off) 5.5 8 ma dc converter disabled inrush current (i 2 t) i inrush 0.14 a 2 s inrush current ratio i t /i m 22 input ripple rejection 50 db frequency <1khz input fuse 20 a slow blow/antisurge hrc recommended 250v rating. see application note 190 input characteristics characteristic symbol min typ max units notes and conditions input voltage - continuous v in (cont) -0.3 75 v dc v in(+) - v in(-) input voltage -peak/surge v in (peak) -0.3 100 v dc transients of 100 msec or less, in duration input voltage - remote pin v rem (peak) -0.3 20 v dc peaks of any duration operating temperature t op -40 120 c measured at hotspot storage temperature t storage -55 125 c output power p out (max) 336 w
rev.12.12.07 quarter-brick series 3 of 12 technical reference note - quarter-brick series semi-regulated 12 volt output characteristic symbol min typ max units notes and conditions mean time between failure mtbf 5,467,917 hours telcordia tech. sr-332 tamb = 25c, tcase = 20c rise airflow = 400lfm, v in = v in (nom) , i out = 50% i out (max) signal electrical interface reliability and service life isolation 88 characteristic symbol min typ max units notes and conditions input to output test voltage 2,250 v dc test duration 1s input to output capacitance 1200 pf input to output resistance 10 m measured with 500vdc input to output insulation system basic characteristic symbol min typ max units notes and conditions a t remote on / off ( contro l) p i n see n otes 1 and 2 open collector or equivalent compatible control pin open circuit voltage v ih 4.6 5.0 v i ih = 0a; open circuit voltage high level input voltage v ih 2.4 20 v converter guaranteed on when when control pin is greater than v ih (min) high level input current i ih 10 a current flowing into control pin when pin is pulled high (max. at v ih = 75v) acceptable high level i ih (leakage) -10 a acceptable leakage current from leakage current signal pin into the open collector driver (neg = from converter) low level input voltage v ii -0.3 0.4 v converter guaranteed off when control pin is less than v il (max) low level input current i il (max) -0.6 -0.75 ma vii = 0.0v, maximum source current from converter with short circuit common protection/control characteristic symbol min typ max units notes and conditions overtemperature shutdown t ots 120 125 130 c hotspot temperature, non- threshold latching shutdown protection. see application note 190
rev.12.12.07 quarter-brick series 4 of 12 technical reference note - quarter-brick series semi-regulated 12 volt output other specifications characteristic symbol min typ max units notes and conditions switching frequency f sw 400 khz fixed frequency (all models) emc electromagnetic compatibility phenomenon port standard test level notes and conditions immunity: esd enclosure en61000-4-2 6kv contact level 3, (output within specification) 8kv air level 3, (output within specification) radiated field enclosure en61000-4-3 10v/m level 3, (output within specification) x and y axes conducted dc power en61000-4-6 10v input transients dc power etr 283 with recommended class b external filter, no load, 10j (output remains within 9%) environmental specifications characteristic symbol min typ max units notes and conditions thermal performance -40 120 c hotspot temperature altitude 3,000 m derate total max. output current 9843 ft by 20% 10,000 m derate total max. output current 32,808 ft by 50% type parameter reference test level air temperature iec 60068-2-1 ab/ad: -40c, 16h cold iec680068-2-2 bb/bd: +70c, 16h dry heat iec 68-2-14 nb: rate of -5c/+45c, 0.5c/min 2 cycles, 3h ea change relative humidity iec 60068-2-56 cb: damp +35c, 93% rh, 4 days 50% of samples powered at heat, steady state 10% load and 50% unpowered vibration iec60068-2-6 fc: 3 axes, 5 sweeps per axis unpowered on test card sinusoidal freq. range and displacement 5-9hz, 1.2mm freq. range and acceleration 9-200hz, 10m/s 2 shock and bump iec 60068-2-29 eb: bump 100 bumps each of 6 directions, mounted on powered on test card, shock spectrum half-sine, duration
rev.12.12.07 quarter-brick series 5 of 12 technical reference note - quarter-brick series semi-regulated 12 volt output material ratings characteristic - signal name notes and conditions flammability rating ul94v-0 material type fr4 pcb safety agency approvals characteristic ul/cul 60950-1 file number e135734 vde certificate number 10401-3336-0206 model numbers standards compliance list characteristic en60950-1 ul/cul 60950-1 1st edition vde model input output overvoltage output typical number voltage voltage protection current (max.) efficiency ibc28aqw4812 36 - 75vdc 12v 15v 28a 94.5%
rev.12.12.07 quarter-brick series 6 of 12 technical reference note - quarter-brick series semi-regulated 12 volt output input characteristics ibc28aqw4812 ibc28aqw4812 characteristic symbol min typ max units notes and conditions input current - operating i in 7.42 a dc v in = v in (nom) ; i out = i out (max) ; v o = v o (nom) input current - maximum i in (max) 10 a dc v in = v in (min) ; i out = i out (max) ; v o = v o (nom), measured at converter input capacitor ripple current i in (ripple) 460 600 ma rms i out = i out (max) , measured 1500 1800 ma pk-pk without standard filter. see application note 190 reflected ripple current i in (ref) 10 ma rms i out = i out (max) , measured 30 ma pk-pk with standard filter. see application note 190 input capacitance - internal c input 5.4 f internal to converter input capacitance - external c bypass 33 f recommended customer bypass added capacitance, <0.7 esr electrical characteristics - o/p characteristic symbol min typ max units notes and conditions nominal set-point voltage v o (nom) 11.97 12.03 12.06 v dc v in = v in (nom) ; i out = 50% i out (nom) total regulation band v o 11.4 12.6 v dc for all line, static load and temperature until end of life line regulation 1.0 1.5 % i out = i out (nom) ; v in (min) to to v in (max) load regulation 2.0 3.5 % v in = v in (nom) ; i out (min) to i out (max) temperature regulation 0.02 %/c v in = v in (nom) , i out = i out (max) output current continuous i out 028a dc output current - short circuit i sc 9.5 a rms continuous, unit auto recovers from short, v o < 100mv load transient response - v dynamic peak deviation for 50% to 75% peak deviation 650 mv step load, di/dt = 100ma/s 900 mv step load, di/dt = 1a/sec load transient response - t recovery 100 sec settling time to within 1% of recovery output set point voltage for 50% to 75% load step external load capacitance c ext 0 5,000 f higher load capacitance values may be possible. contact artesyn technologies for details output voltage - noise v p-p 50 100 mv pk-pk measurement bandwidth 20mhz v rms 20 40 mv rms see application note 190 for test set-up current sharing accuracy i share 5 % see application note 190
rev.12.12.07 quarter-brick series 7 of 12 technical reference note - quarter-brick series semi-regulated 12 volt output protection and control features efficiency characteristic symbol min typ max units notes and conditions efficiency h 94.0 94.5 % i out = 100% i out (max) , v in = v in (nom) efficiency h 94.5 % i out = 50% i out (max) , v in = v in (nom) ibc28aqw4812 ibc28aqw4812 characteristic symbol min typ max units notes and conditions overvoltage setpoint v ov 14 16 v dc non-latching. see application note 190 for details overcurrent limit inception i oc 29.4 32.2 35.0 a dc v o = 90% of v o (nom)
rev.12.12.07 quarter-brick series 8 of 12 technical reference note - quarter-brick series semi-regulated 12 volt output ibc28aqw4812 figure 1: derating curve with forced air see note 4 figure 2: efficiency vs line figure 3: efficiency vs load figure 5: control on/off characteristic, top (vout), bottom (remote on/off) figure 6: typical transient response 75-50% step load change (1a/sec), top (vout) bottom (iout) figure 4: turn-on characteristic, top (vout), bottom (vin) high line 0.0 11.2 5.6 16.8 22.4 28.0 60 90 70 80 100 output current iout (a) efficiency (%) nom line low line 95 85 75 65 36 51 44 59 67 75 87 95 89 91 97 efficiency (%) 96 92 90 88 93 94 input voltage (v)
rev.12.12.07 quarter-brick series 9 of 12 technical reference note - quarter-brick series semi-regulated 12 volt output ibc28aqw4812 figure 8: typical output ripple and noise measurement figure 9: typical current limit plot figure 7: typical transient response 50-75% step load change (1a/sec), top (vout) bottom (iout) figure 10: current share accuracy calculated as where: ic = converters output current (a) irc = converters rated output current (28a) i load = total load current (a) (see application note 190 for more information)
rev.12.12.07 quarter-brick series 10 of 12 technical reference note - quarter-brick series semi-regulated 12 volt output figure 11: mechanical drawing, pinout table and dimension option table pin connections pin no. function 1+vin 2 remote on/off 3-vin 4 -vout 5 +vout dimension options option clearance height a 0.0170.015 (0.430.38) 0.40 (10.2) e (see note 3) 0.0700.015 (1.780.38) 0.45 (11.43)
rev.12.12.07 quarter-brick series 11 of 12 technical reference note - quarter-brick series semi-regulated 12 volt output note 1 the remote on/off pin is referenced to vin-. note 2 active low remote on/off is available. standard product is active high. when ordering active low parts, designate with the suffix r e.g. ibc28aqw4812-ra. see application note 190 for detailed information regarding on/off control implementation. note 3 e option clearance is required to maintain basic creepage and clearance requirements when minimally insulated conductor paths are placed directly underneath the converter. note 4 for output derating application specific questions, please consult with our field applications team. caution: hazardous internal voltages and high temperatures. ensure that unit is accessible only to trained personnel. the user must provide the recommended fusing in order to comply with safety approvals.
embedded power for business-critical continuity rev.10.31.07 quarter-brick series 12 of 12 emerson network power and the emerson network power logo are trademarks and service marks of emerson electric co. ?2007 emerson electric co. emerson network power. the global leader in enabling business-critical continuity. emersonnetworkpower. com ac power connectivity dc power embedded power inbound power integrated cabinet solutions outside plant precision cooling site monitoring and services americas 5810 van allen way carlsbad, ca 92008 usa telephone: +1 760 930 4600 facsimile: +1 760 930 0698 europe (uk) waterfront business park merry hill, dudley west midlands, dy5 1lx united kingdom telephone: +44 (0) 1384 842 211 facsimile: +44 (0) 1384 843 355 asia (hk) 16th - 17th floors, lu plaza 2 wing yip street, kwun tong kowloon, hong kong telephone: +852 2176 3333 facsimile: +852 2176 3888 for global contact, visit: www.astecpower.com www.artesyn.com technicalsupport@astec.com technicalsupport@artesyn.com while every precaution has been taken to ensure accuracy and completeness in this literature, emerson network power assumes no responsibility, and disclaims all liability for damages resulting from use of this information or for any errors or omissions. quarter-brick series semi-regulated 12 volt output

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