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additionally, a patent pending, full wave coupled inductor topology yields some of the highest full load efficiencies in the industry. all eighth-brick converters have, as standard features, remote on/off capability, adjustable output voltage trim from 80 to 110% of nominal, over- current/under-voltage protection, and full international safety approval including en60950 vde and cul1950. eighth-brick series single output value products 1 the eighth-brick value series is a new low cost, high efficiency, open frame, isolated, up to 25a converter in an industry standard eighth-brick footprint and operates from a 36 to 75vdc supply. this new series elevates the power density threshold for high-end application design r equirements where high output current at low voltages are required. the converter architecture takes advantage of open- frame construction to provide low mass and a low thermal impedance for a single board design. high efficiency topology and high output current low profile, 0.300in (7.62mm) height industry standard 1/8 brick footprint (identical to 1/4 brick pinout) 38% savings in space over industry standard 1/4 brick converters wide operating ambient temperature range, -40? to +85? 80% to 110% output trim basic insulation overvoltage and overtemperature protection remote on/off approvals to en60950 vde and ul/cul60950 1 00v, 100msec input voltage transients rated monotonic startup into normal and prebiased loads secondary side control, no optocouplers, fast transient response high efficiency, high current, low profile dc/dc converters eighth-brick series | 25a dc/dc [ 2 year warranty ] file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
absolute maximum ratings input characteristics sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 2 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 devi ce r eliability. all specifications are typical at nominal input vin = 48v and full rated resistive load at 25 ? c ambient unless otherwise specified. 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 50 madc v in (min) - v in (max) , enabled input current - quiescent l in (off) 6 madc converter disabled inrush current (i 2 t) linrush 0.01 a 2 s inrush current ratio i t /i m 22 input ripple rejection 50 db frequency <1 khz input fuse 10 a slow blow/antisurge hrc r ecommended 200v rating. see application note 138 t urn on/off characteristic symbol min typ max units notes and conditions input voltage - turn on v in (on) 35.5 36 v dc input voltage - turn off v in (off) 33 33.5 v dc tu rn on delay - enabled, t delay 10 15 msec with the remote on/off signal then power applied (power) asserted, time from when v in > v in (oper) until vout is within total regulation band tu rn on delay - power t delay 10 15 msec with v in = v in (nom) , then applied, then enabled (enable) remote on/off asserted, time until vo is within total error band rise time t rise 2 3 msec from 10% to 90%, full resistive load, no external capacitance file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004 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 100msec or less, in duration input voltage - remote pin v re m (peak) -0.3 75 v dc peaks of any duration operating temperature t op -40 85 ?c measured at ambient storage temperature t storage -55 125 ?c output power (les25a48-1v2) pout (max) 30 w output power (les25a48-1v5) pout (max) 37.5 w output power (les25a48-1v8) pout (max) 45 w output power (les20a48-2v5) pout (max) 50 w output power (les20a48-3v3) pout (max) 66 w output power (les10a48-5v0) pout (max) 50 w
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 3 www.artesyn.com signal electrical interface isolation characteristic symbol min typ max units notes and conditions input to output test voltage 2250 v dc test duration 1s input to output capacitance 1500 pf input to output resistance 100 m? measured with 500vdc input to output insulation system basic characteristic - signal name symbol min typ max units notes and conditions at remote on/off (control) pin see notes 1 and 2 open collector or equivalent compatible control pin open circuit voltage v ih 2.8 3.5 v i ih = 0a; open circuit voltage high level input voltage v ih 2.4 v converter guaranteed on 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) -0.45 -0.5 ma v ii = 0.0 v, maximum source current from converter with short circuit common protection/control characteristic symbol min typ max units notes and conditions overtemperature shutdown tots 120 125 130 ?c hotspot temperature, threshold non-latching shutdown protection. see application note 138 remote sense compensation 10 % % of vo (nom), compensation includes trim. file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004 reliability and service life characteristic symbol min typ max units notes and conditions mean time between failure mtbf 4,034,120 hours telcordia tech. sr-332 t amb = 25oc, tcase = 20oc rise airflow = 400lfm, v in = v in (nom), i out = 50% i out (max)
sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 4 environmental requirements other specifications characteristic symbol min typ max units notes and conditions switching frequency f sw 480 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%) characteristic symbol min typ max units notes and conditions thermal performance -40 120 ?c hotspot temperature altitude 3000 m derate total max. output current by 20% 9843 ft derate total max. output current by 20% 10000 m derate total max. output current by 50% 32808 ft derate total max. output current by 50% t ype parameter reference test level air temperature iec 60068-2-1 ab/ad: -40?c, 16h cold iec 680068-2-2 bb/bd: dry heat +70?c, 16h iec 68-2-14 nb: rate of -5?c/+45?c, 0.5oc/min 2 cycles, 3h ea change relative humidity iec60068-2-56 +35oc, 93% rh, 4 days 50% of samples powered cb: damp heat, steady at 10% load and 50% unpowered state v ibration iec60068-2-6 3 axes, 5 sweeps per axis unpowered on test card. fc: sinusoidal freq. range and displacement 5-9hz, 1.2mm. freq. range and acceleration 9-200hz, 10m/s 2 shock and bump iec 60068-2-29 100 bumps each of 6 directions, mounted on powered on eb: bump test card, shock spectrum half-sine, duration file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc 5 www.artesyn.com high efficiency, high current, low profile dc/dc converters material ratings model numbers standards compliance list characteristic en60950 ul/cul 1950 3rd edition vde safety agency approvals standard category ul/cul 1950 file number e135734 vde certificate no. 10401-3336-0197 characteristic - signal name notes and conditions flammability rating ul94v-0 material type fr4 pcb file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004 model input output overvoltage output current typical number voltage voltage protection (max.) efficiency les25a48-1v2 36-75vdc 1.2v 1.4v 25a 88.0% les25a48-1v5 36-75vdc 1.5v 1.8v 25a 89.5% les25a48-1v8 36-75vdc 1.8v 2.2v 25a 90.5% les20a48-2v5 36-75vdc 2.5v 3.0v 20a 90.0% les20a48-3v3 36-75vdc 3.3v 4.0v 20a 91.0% les10a48-5v0 36-75vdc 5.0v 6.0v 10a 92.0%
sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 6 input characteristics les25a48-1v2 model electrical characteristics - o/p les25a48-1v2 model characteristic symbol min typ max units notes and conditions input current - operating i in 0.71 a dc v in = v in (nom) ; i out = i out (max) ; v o = v o (nom) input current - maximum i in (max.) 0.97 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) 50 ma rms i out = i out (max) , measured 150 ma pk-pk without standard filter. see application note 138 reflected ripple current i in (refl) 2 ma rms i out = i out (max) , measured 7.5 ma pk-pk with standard filter. see application note 138 input capacitance - c input 1.75 f internal to converter internal input capacitance - c bypass 33 f recommended customer external bypass added capacitance, <0.7? esr characteristic symbol min typ max units notes and conditions nominal set-point voltage vo (nom) 1.18 1.20 1.22 v dc v in = v in (nom) ; i out = i out (nom) t otal regulation band v o 1.16 1.24 v dc for all line, static load and temperature until end of life. line regulation 0.01 0.1 % i out = i out (nom), v in (min) to v in (max) load regulation 0.02 0.2 % v in = v in (nom), i out (min) to i out (max) t emperature regulation 0.02 %/oc v in = v in (nom), i out =i out (max) output current continuous iout 0 25 a dc output current - short circuit i sc 10 a rms continuous, unit auto recovers from short, v o < 100mv load transient response - v dynamic/ peak deviation for 50% to 75% peak deviation vo (nom) 20 mv step load, di/dt = 100ma/sec, 70 mv step load, di/dt = 1a/sec) load transient response - t r ecovery 20 sec settling time to within 1% of r ecovery output set point voltage for 50% to 75% load step external load capacitance c ext 0 40,000 f higher load capacitance values may be possible. contact artesyn t echnologies for details output voltage - noise v p-p 20 60 mv pk-pk measurement bandwidth 20 mhz v rms 10 20 mv rms see application note 138 for test set-up file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 7 www.artesyn.com protection and control features les25a48-1v2 model efficiency les25a48-1v2 model characteristic symbol min typ max units notes and conditions overvoltage setpoint v ov 1.38 1.56 v dc non-latching. see application note 138 for details overcurrent limit inception i oc 26.25 28.5 31.25 a dc v o = 90% of v o (nom) output voltage trim range 110 % trim up (% of v o nom ) limit o/p to 30 watts 80 % trim down (% of v o nom ) see application note 138 for details of trim equations and trim curves open sense voltage 1.20 v dc characteristic symbol min typ max units notes and conditions efficiencyh 87.088.0%i out = 100% l out (max) , v in = v in (nom) efficiencyh 89.5%i out = 50% i out (max) , v in = v in (nom) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 8 input characteristics les25a48-1v5 model electrical characteristics - o/p les25a48-1v5 model characteristic symbol min typ max units notes and conditions input current - operating i in 0.88 a dc v in = v in (nom) ; i out = i out (max) ; v o = v o (nom) input current - maximum i in (max.) 1.20 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) 50 ma rms i out = i out (max) , measured 150 ma pk-pk without standard filter. see application note 138 reflected ripple current i in (refl) 2 ma rms i out = i out (max) , measured 7.5 ma pk-pk with standard filter. see application note 138 input capacitance - c input 1.75 f internal to converter internal input capacitance - c bypass 33 f recommended customer external bypass added capacitance, <0.7? esr characteristic symbol min typ max units notes and conditions nominal set-point voltage vo (nom) 1.48 1.50 1.52 v dc v in = v in (nom) ; i out = i out (nom) t otal regulation band v o 1.45 1.55 v dc for all line, static load and temperature until end of life. line regulation 0.01 0.1 % i out = i out (nom), v in (min) to v in (max) load regulation 0.02 0.2 % v in = v in (nom), i out (min) to i out (max) t emperature regulation 0.02 %/oc v in = v in (nom), i out =i out (max) output current continuous iout 0 25 a dc output current - short circuit i sc 10 a rms continuous, unit auto recovers from short, v o < 100mv load transient response - v dynamic/ peak deviation for 50% to 75% peak deviation vo (nom) 20 mv step load, di/dt = 100ma/sec, 70 mv step load, di/dt = 1a/sec) load transient response - t r ecovery 20 sec settling time to within 1% of r ecovery output set point voltage for 50% to 75% load step external load capacitance c ext 0 40,000 f higher load capacitance values may be possible. contact artesyn t echnologies for details output voltage - noise v p-p 20 60 mv pk-pk measurement bandwidth 20 mhz v rms 10 20 mv rms see application note 138 for test set-up file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 9 www.artesyn.com protection and control features les25a48-1v5 model efficiency les25a48-1v5 model characteristic symbol min typ max units notes and conditions overvoltage setpoint v ov 1.72 1.95 v dc non-latching. see application note 138 for details overcurrent limit inception i oc 26.25 28.5 31.25 a dc v o = 90% of v o (nom) output voltage trim range 110 % trim up (% of v o nom ) limit o/p to 37.5 watts 80 % trim down (% of v o nom ) see application note 138 for details of trim equations and trim curves open sense voltage 1.50 v dc characteristic symbol min typ max units notes and conditions efficiencyh 88.089.5%i out = 100% l out (max) , v in = v in (nom) efficiencyh 90.5%i out = 50% i out (max) , v in = v in (nom) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 10 input characteristics les25a48-1v8 model electrical characteristics - o/p les25a48-1v8 model characteristic symbol min typ max units notes and conditions input current - operating i in 1.04 a dc v in = v in (nom) ; i out = i out (max) ; v o = v o (nom) input current - maximum i in (max.) 1.42 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) 50 ma rms i out = i out (max) , measured 150 ma pk-pk without standard filter. see application note 138 reflected ripple current i in (refl) 2 ma rms i out = i out (max) , measured 7.5 ma pk-pk with standard filter. see application note 138 input capacitance - c input 1.75 f internal to converter internal input capacitance - c bypass 33 f recommended customer external bypass added capacitance, <0.7? esr characteristic symbol min typ max units notes and conditions nominal set-point voltage vo (nom) 1.77 1.80 1.83 v dc v in = v in (nom) ; i out = i out (nom) t otal regulation band v o 1.75 1.85 v dc for all line, static load and temperature until end of life. line regulation 0.01 0.1 % i out = i out (nom), v in (min) to v in (max) load regulation 0.02 0.2 % v in = v in (nom), i out (min) to i out (max) t emperature regulation 0.02 %/oc v in = v in (nom), i out =i out (max) output current continuous iout 0 25 a dc output current - short circuit i sc 10 a rms continuous, unit auto recovers from short, v o < 100mv load transient response - v dynamic/ peak deviation for 50% to 75% peak deviation vo (nom) 20 mv step load, di/dt = 100ma/sec, 70 mv step load, di/dt = 1a/sec) load transient response - t r ecovery 20 sec settling time to within 1% of r ecovery output set point voltage for 50% to 75% load step external load capacitance c ext 0 40,000 f higher load capacitance values may be possible. contact artesyn t echnologies for details output voltage - noise v p-p 20 60 mv pk-pk measurement bandwidth 20 mhz v rms 10 20 mv rms see application note 138 for test set-up file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 11 www.artesyn.com protection and control features les25a48-1v8 model efficiency les25a48-1v8 model characteristic symbol min typ max units notes and conditions overvoltage setpoint v ov 2.07 2.25 v dc non-latching. see application note 138 for details overcurrent limit inception i oc 26.25 28.5 31.25 a dc v o = 90% of v o (nom) output voltage trim range 110 % trim up (% of v o nom ) limit o/p to 45 watts 80 % trim down (% of v o nom ) see application note 138 for details of trim equations and trim curves open sense voltage 1.80 v dc characteristic symbol min typ max units notes and conditions efficiencyh 89.090.5%i out = 100% l out (max) , v in = v in (nom) efficiencyh 91.5%i out = 50% i out (max) , v in = v in (nom) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 12 input characteristics les20a48-2v5 model electrical characteristics - o/p les20a48-2v5 model characteristic symbol min typ max units notes and conditions input current - operating i in 1.16 a dc v in = v in (nom) ; i out = i out (max) ; v o = v o (nom) input current - maximum i in (max.) 1.59 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) 50 ma rms i out = i out (max) , measured 150 ma pk-pk without standard filter. see application note 138 reflected ripple current i in (refl) 2 ma rms i out = i out (max) , measured 7.5 ma pk-pk with standard filter. see application note 138 input capacitance - c input 1.75 f internal to converter internal input capacitance - c bypass 33 f recommended customer external bypass added capacitance, <0.7? esr characteristic symbol min typ max units notes and conditions nominal set-point voltage vo (nom) 2.46 2.50 2.54 v dc v in = v in (nom) ; i out = i out (nom) t otal regulation band v o 2.42 2.58 v dc for all line, static load and temperature until end of life. line regulation 0.01 0.1 % i out = i out (nom), v in (min) to v in (max) load regulation 0.02 0.2 % v in = v in (nom), i out (min) to i out (max) t emperature regulation 0.02 %/oc v in = v in (nom), i out =i out (max) output current continuous iout 0 20 a dc output current - short circuit i sc 7a rms continuous, unit auto recovers from short, v o < 100mv load transient response - v dynamic/ peak deviation for 50% to 75% peak deviation vo (nom) 20 mv step load, di/dt = 100ma/sec, 90 mv step load, di/dt = 1a/sec) load transient response - t r ecovery 20 sec settling time to within 1% of r ecovery output set point voltage for 50% to 75% load step external load capacitance c ext 0 10,000 f higher load capacitance values may be possible. contact artesyn t echnologies for details output voltage - noise v p-p 25 60 mv pk-pk measurement bandwidth 20 mhz v rms 52 0 mv rms see application note 138 for test set-up file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 13 www.artesyn.com protection and control features les20a48-2v5 model efficiency les20a48-2v5 model characteristic symbol min typ max units notes and conditions overvoltage setpoint v ov 2.87 3.12 v dc non-latching. see application note 138 for details overcurrent limit inception i oc 21 23 25 a dc v o = 90% of v o (nom) output voltage trim range 110 % trim up (% of v o nom ) limit o/p to 50 watts 80 % trim down (% of v o nom ) see application note 138 for details of trim equations and trim curves open sense voltage 2.50 v dc characteristic symbol min typ max units notes and conditions efficiencyh 88.590.0%i out = 100% l out (max) , v in = v in (nom) efficiencyh 90.8%i out = 50% i out (max) , v in = v in (nom) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 14 input characteristics les20a48-3v3 model electrical characteristics - o/p les20a48-3v3 model characteristic symbol min typ max units notes and conditions input current - operating i in 1.51 a dc v in = v in (nom) ; i out = i out (max) ; v o = v o (nom) input current - maximum i in (max.) 2.12 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) 50 ma rms i out = i out (max) , measured 150 ma pk-pk without standard filter. see application note 138 reflected ripple current i in (refl) 2 ma rms i out = i out (max) , measured 7.5 ma pk-pk with standard filter. see application note 138 input capacitance - c input 1.75 f internal to converter internal input capacitance - c bypass 33 f recommended customer external bypass added capacitance, <0.7? esr characteristic symbol min typ max units notes and conditions nominal set-point voltage vo (nom) 3.25 3.30 3.35 v dc v in = v in (nom) ; i out = i out (nom) t otal regulation band v o 3.20 3.40 v dc for all line, static load and temperature until end of life. line regulation 0.01 0.1 % i out = i out (nom), v in (min) to v in (max) load regulation 0.02 0.2 % v in = v in (nom), i out (min) to i out (max) t emperature regulation 0.02 %/oc v in = v in (nom), i out =i out (max) output current continuous iout 0 20 a dc output current - short circuit i sc 7a rms continuous, unit auto recovers from short, v o < 100mv load transient response - v dynamic/ peak deviation for 50% to 75% peak deviation vo (nom) 25 mv step load, di/dt = 100ma/sec, 90 mv step load, di/dt = 1a/sec load transient response - t r ecovery 20 sec settling time to within 1% of r ecovery output set point voltage for 50% to 75% load step external load capacitance c ext 0 10,000 f higher load capacitance values may be possible. contact artesyn t echnologies for details output voltage - noise v p-p 25 60 mv pk-pk measurement bandwidth 20 mhz v rms 52 0 mv rms see application note 138 for test set-up file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 15 www.artesyn.com protection and control features les20a48-3v3 model efficiency les20a48-3v3 model characteristic symbol min typ max units notes and conditions overvoltage setpoint v ov 3.80 4.13 v dc non-latching. see application note 138 for details overcurrent limit inception i oc 21 23 25 a dc v o = 90% of v o (nom) output voltage trim range 110 % trim up (% of v o nom ) limit o/p to 66 watts 80 % trim down (% of v o nom ) see application note 138 for details of trim equations and trim curves open sense voltage 3.30 v dc characteristic symbol min typ max units notes and conditions efficiencyh 89.591.0%i out = 100% l out (max) , v in = v in (nom) efficiencyh 92.0%i out = 50% i out (max) , v in = v in (nom) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 16 input characteristics les10a48-5v0 model electrical characteristics - o/p les10a48-5v0 model characteristic symbol min typ max units notes and conditions input current - operating i in 1.13 a dc v in = v in (nom) ; i out = i out (max) ; v o = v o (nom) input current - maximum i in (max.) 1.55 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) 50 ma rms i out = i out (max) , measured 100 ma pk-pk without standard filter. see application note 138 reflected ripple current i in (refl) 2 ma rms i out = i out (max) , measured 7.5 ma pk-pk with standard filter. see application note 138 input capacitance - c input 1.75 f internal to converter internal input capacitance - c bypass 33 f recommended customer external bypass added capacitance, <0.7? esr characteristic symbol min typ max units notes and conditions nominal set-point voltage vo (nom) 4.92 5.00 5.08 v dc v in = v in (nom) ; i out = i out (nom) t otal regulation band v o 4.85 5.15 v dc for all line, static load and temperature until end of life. line regulation 0.01 0.1 % i out = i out (nom), v in (min) to v in (max) load regulation 0.02 0.2 % v in = v in (nom), i out (min) to i out (max) t emperature regulation 0.02 %/oc v in = v in (nom), i out =i out (max) output current continuous iout 0 10 a dc output current - short circuit i sc 6a rms continuous, unit auto recovers from short, v o < 100mv load transient response - v dynamic/ peak deviation for 50% to 75% peak deviation vo (nom) 40 mv step load, di/dt = 100ma/sec, 120 mv step load, di/dt = 1a/sec load transient response - t r ecovery 20 sec settling time to within 1% of r ecovery output set point voltage for 50% to 75% load step external load capacitance c ext 0 10,000 f higher load capacitance values may be possible. contact artesyn t echnologies for details output voltage - noise v p-p 25 60 mv pk-pk measurement bandwidth 20 mhz v rms 52 0 mv rms see application note 138 for test set-up file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 17 www.artesyn.com protection and control features les10a48-5v0 model efficiency les10a48-5v0 model characteristic symbol min typ max units notes and conditions overvoltage setpoint v ov 5.75 6.25 v dc non-latching. see application note 138 for details overcurrent limit inception i oc 10.5 11.5 12.5 a dc v o = 90% of v o (nom) output voltage trim range 110 % trim up (% of v o nom ) limit o/p to 50 watts 80 % trim down (% of v o nom ) see application note 138 for details of trim equations and trim curves open sense voltage 5.0 v dc characteristic symbol min typ max units notes and conditions efficiencyh 90.592.0%i out = 100% l out (max) , v in = v in (nom) efficiencyh 93.0%i out = 50% i out (max) , v in = v in (nom) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
figure 6: typical transient response 75-50% step load change (1a/sec), top (vout) bottom (iout) 25 35 45 55 65 75 85 0 10 20 30 output current (a) ambient temperature (oc) 0.5 m/s (100 lfm) 1 m/s (200 lfm) 1.5 m/s (300 lfm) 2 m/s (400 lfm) 35 43 51 59 67 75 80 82 84 86 88 90 efficiency (%) input voltage (v) figure 1: derating curve with forced air figure 2: efficiency vs. line figure 3: efficiency vs. load 0 5 10 15 20 25 60 70 80 90 100 efficiency (%) output current (a) 36 vin 48 vin 75 vin les25a48-1v2 model sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 18 figure 4: turn-on characteristic, t op (vout), bottom (vin) figure 5: control on/off characteristic, t op (vout), bottom (remote on/off) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 19 www.artesyn.com figure 7: typical transient response 50-75% step load change (1a/sec), top (vout) bottom (iout) figure 8: typical output ripple and noise measurement figure 9: current limit characteristic les25a48-1v2 model file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004 figure 10: turn-off characteristic
figure 16: typical transient response 75-50% step load change (1a/sec), top (vout) bottom (iout) 25 35 45 55 65 75 85 0 10 20 30 output current (a) ambient temperature (oc) 0.5 m/s (100 lfm) 1 m/s (200 lfm) 1.5 m/s (300 lfm) 2 m/s (400 lfm) 35 43 51 59 67 75 82 84 86 88 90 92 efficiency (%) input voltage (v) figure 11: derating curve with forced air figure 12: efficiency vs. line figure 13: efficiency vs. load 0 5 10 15 20 25 60 70 80 90 100 efficiency (%) output current (a) 36 vin 48 vin 75 vin les25a48-1v5 model sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 20 figure 14: turn-on characteristic, t op (vout), bottom (vin) figure 15: control on/off characteristic, t op (vout), bottom (remote on/off) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 21 www.artesyn.com figure 17: typical transient response 50-75% step load change (1a/sec), top (vout) bottom (iout) figure 18: typical output ripple and noise measurement figure 19: current limit characteristic les25a48-1v5 model file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004 figure 20: turn-off characteristic
figure 26: typical transient response 75-50% step load change (1a/sec), top (vout) bottom (iout) 25 35 45 55 65 75 85 0 10 20 30 output current (a) ambient temperature (oc) 0.5 m/s (100 lfm) 1 m/s (200 lfm) 1.5 m/s (300 lfm) 2 m/s (400 lfm) 35 43 51 59 67 75 80 82 84 86 88 90 efficiency (%) input voltage (v) figure 21: derating curve with forced air figure 22: efficiency vs. line figure 23: efficiency vs. load 0 5 10 15 20 25 60 70 80 90 100 efficiency (%) output current (a) 36 vin 48 vin 75 vin les25a48-1v8 model sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 22 figure 24: turn-on characteristic, t op (vout), bottom (vin) figure 25: control on/off characteristic, t op (vout), bottom (remote on/off) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 23 www.artesyn.com figure 27: typical transient response 50-75% step load change (1a/sec), top (vout) bottom (iout) figure 28: typical output ripple and noise measurement figure 29: current limit characteristic les25a48-1v8 model file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004 figure 30: turn-off characteristic
figure 36: typical transient response 75-50% step load change (1a/sec), top (vout) bottom (iout) 25 35 45 55 65 75 85 0 5 10 15 20 25 output current (a) ambient temperature (oc) 0.5 m/s (100 lfm) 1 m/s (200 lfm) 1.5 m/s (300 lfm) 2 m/s (400 lfm) 35 43 51 59 67 75 84 86 88 90 92 94 efficiency (%) input voltage (v) figure 31: derating curve with forced air figure 32: efficiency vs. line figure 33: efficiency vs. load 0 5101 520 60 70 80 90 100 efficiency (%) output current (a) 36 vin 48 vin 75 vin les20a48-2v5 model sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 24 figure 34: turn-on characteristic, t op (vout), bottom (vin) figure 35: control on/off characteristic, t op (vout), bottom (remote on/off) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 25 www.artesyn.com figure 37: typical transient response 50-75% step load change (1a/sec), top (vout) bottom (iout) figure 38: typical output ripple and noise measurement figure 39: current limit characteristic les20a48-2v5 model file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004 figure 40: turn-off characteristic
les20a48-3v3 model sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 26 file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004 figure 46: typical transient response 75-50% step load change (1a/sec), top (vout) bottom (iout) 25 35 45 55 65 75 85 0 5 10 15 20 25 output current (a) ambient temperature (oc) 0.5 m/s (100 lfm) 1 m/s (200 lfm) 1.5 m/s (300 lfm) 2 m/s (400 lfm) 35 43 51 59 67 75 84 86 88 90 92 94 efficiency (%) input voltage (v) figure 41: derating curve with forced air figure 42: efficiency vs. line figure 43: efficiency vs. load 0 5101 520 60 70 80 90 100 efficiency (%) output current (a) 36 vin 48 vin 75 vin figure 44: turn-on characteristic, t op (vout), bottom (vin) figure 45: control on/off characteristic, t op (vout), bottom (remote on/off)
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 27 www.artesyn.com les20a48-3v3 model file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004 figure 47: typical transient response 50-75% step load change (1a/sec), top (vout) bottom (iout) figure 48: typical output ripple and noise measurement figure 49: current limit characteristic figure 50: turn-off characteristic
figure 56: typical transient response 75-50% step load change (1a/sec), top (vout) bottom (iout) 25 35 45 55 65 75 85 0 5 10 15 output current (a) ambient temperature (oc) 0.5 m/s (100 lfm) 1 m/s (200 lfm) 1.5 m/s (300 lfm) 2 m/s (400 lfm) 35 43 51 59 67 75 84 86 88 90 92 94 efficiency (%) input voltage (v) figure 51: derating curve with forced air figure 52: efficiency vs. line figure 53: efficiency vs. load efficiency (%) output current (a) 36 vin 48 vin 75 vin 0 2 4 6 8 10 60 70 80 90 100 les10a48-5v0 model sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 28 figure 54: turn-on characteristic, t op (vout), bottom (vin) figure 55: control on/off characteristic, t op (vout), bottom (remote on/off) file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 29 www.artesyn.com figure 57: typical transient response 50-75% step load change (1a/sec), top (vout) bottom (iout) figure 58: typical output ripple and noise measurement figure 59: current limit characteristic les10a48-5v0 model file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004 figure 60: turn-off characteristic
sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 30 2.30 (58.4) 2.000 (50.80) 0.300 (7.62) 0.45 (11.4) ? 0.062 0.002 ( ? 1.57 0.05) (2 pls) 1 4 5 6 7 8 3 2 top view ? 0.040 0.002 ( ? 1.02 0.05) (6 pls) 0.90 (22.9) 0.150 (3.81) 0.300 (7.62) 0.145 0.020 (3.68 0.51) 0.188 (4.78) clearance see option table height see option table dimensions in inches (mm) to lerances (unless otherwise specified) x.xx 0.02 (x.x 0.5) x.xxx 0.010 (x.xx 0.25) 2.30 (58.4) 2.000 (50.80) 0.300 (7.62) ? 0.074 0.003 ( ? 1.88 0.08) (2 pls) 1 4 5 6 7 8 3 2 ? 0.054 0.00 ( ? 1.37 0.08) (6 pls) 0.300 (7.62) 0.145 0.020 (3.68 0.51) recommended hole pattern 0.150 (3.81) 0.150 (3.81) 0.150 (3.81) 0.90 (22.9) 0.45 (11.4) figure 61: dimensions and pinout pin connections pin no. function 1vin+ 2 on/off 3v in- 4v out- 5 sense- 6t rim 7 sense+ 8v out+ dimension options option clearance height a 0.030 (0.76) min. 0.300 (7.62) max. e 0.070 (1.78) min. 0.340 (8.64) max. file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
sxa10 series | 1 0w dc/dc eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters 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. les20a48-2v5ra. see application note 138 for detailed information regarding on/off control implementation. 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. 31 www.artesyn.com file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004
long form data sheet ? artesyn technologies? 2004 the information and specifications contained in this data sheet are believed to be correct at time of publication. however, artesyn t echnologies accepts no responsibility for consequences arising from printing errors or inaccuracies. specifications are subject to change without notice. no rights under any patent accompany the sale of any such product(s) or information contained herein. eighth-brick series | 25a dc/dc high efficiency, high current, low profile dc/dc converters north america e-mail: sales.us@artesyn.com ? 800 769 7274 ? + 508 628 5600 european locations e-mail: sales.europe@artesyn.com ireland ? + 353 24 93130 austria ? + 43 1 80150 far east locations e-mail: sales.asia@artesyn.com hong kong ? + 852 2699 2868 32 www.artesyn.com file name: lf_eighth_brick_value.pdf rev (03): 13 may 2004

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