p art no. 02-gaq-07 rev. 2.0 ?041405 www.galaxypwr.com GAQW1V240 ?1 galaxy power inc. 155 flanders road w estborough, ma 01581 t elephone: 508-870-9775 fa x: 508-870-9796 e-mail: info@galaxypwr.com the aquarius series is the highest power eighth-brick dc/dc converter in the industry. industry standard pinout and footprint no heat sink required v ery low common-mode noise for a commercial dc/dc converter tw o-stage input filter constant switching frequency remote sense single board design v ery low parts count tw o year warranty control functions uses patented power supply control and architecture microprocessor controlled primary-side enable, choice of logic protection features over temperature protection over voltage protection over current protection over/under input voltage protection typical characteristics output setpoint accuracy: 1% load regulation: 0.2% line regulation: 0.2% regulation over line, load, and t emperature: 2% low output ripple output trim aquarius 48v input, 1.2vdc, 40a output the aquarius series of eighth- brick dc/dc converters in galaxy's coolconverter line provides both exceptional performance and high density. ga q w1v240 features: 48v input 1.2vdc, 40a output high efficiency: 83% at 1.2v, 40a 86% at 1.2v, 20a iso 9001 certified organisation certified to iso 9001:2000 eighth-brick eighth-brick e i g h t h - b r i c k q u a r t e r - b r i c k q u a r t e r - b r i c k h a l f - b r i c k h a l f - b r i c k s i p s i p 3 - q u a r t e r - b r i c k 3 - q u a r t e r - b r i c k
GAQW1V240 ?2 www.galaxypwr.com p art no. 02-gaq-07 rev. 2.0 ?041405 galaxy power inc. 155 flanders road w estborough, ma 01581 t elephone: 508-870-9775 fa x: 508-870-9796 e-mail: info@galaxypwr.com general specifications operating temperature ?0 c to +100 c storage temperature ?5 c to +125 c relative humidity 10% to 95% rh, non-condensing vibration 2 to 9hz, 3mm disp., 9 to 200hz, 1g material flammability ul v-0 w eight 27 grams mtbf telcordia (bellcore) 2.2 million hours general specifications v in = 48v dc , t a @25 c, 300 lfm airflow, v out =1.2v dc , i out = full load unless otherwise noted. av ailable output power depends on ambient temperature and good thermal management. (see application graphs for limits.) input characteristics pa r ameter min typ max units operating input voltage 36 48 75 v dc input current 1.8 a input capacitance 3 f input hysteresis, low line 2 v dc output characteristics regulation over line, load & temperature 1.176 1.224 v v oltage ripple 20 mv rms v oltage ripple, 20mhz bw 50 mv p? current range 0 40 a current limit inception 41.2 56 a short circuit current, peak 1 60 a output transient response, 50% to 75% load change, 1a/ sec 2 24 %v out settling time to 1% 300 s t urn-on time to 98%vnom 25 ms output overshoot at turn-on 0 %v out t rim range 70 110 %v out overvoltage protection, latching 130 %v out isolation isolation test voltage, input/output (basic) 2250 v dc isolation resistance 10 m ? f eatures overtemperature protection, thermal sensor, latching 3 110 c switching frequency, fixed 250 khz notes: 1. during short circuit, converter will shut down and attempt to restart once per second. the average current during this cond ition will be very low and the device can be safely left in this condition continuously. 2. limited by output energy storage. for improved performance see tuned (t) model information. 3. pcb less than 130 c approvals and standards ul and c-ul recognized component, tuv**, ul60950, csa 22.2 no. 950, iec/en 60950 emc characteristics: designed to meet emission and immunity requirements per en55022, cispr 22, class b, and cispr 24. ** an external fuse shall be used to comply with the requirements.
p art no. 02-gaq-07 rev. 2.0 ?041405 www.galaxypwr.com GAQW1V240 ?3 galaxy power inc. 155 flanders road w estborough, ma 01581 t elephone: 508-870-9775 fa x: 508-870-9796 e-mail: info@galaxypwr.com undervoltage hysteresis 1.0 0 30 34 37 input voltage (v) output voltage normalized 36 32 33 35 31 overvoltage hysteresis 1.0 0 76.5 78.5 80.5 input voltage (v) output voltage normalized 79.5 77.5 78 80 79 77 c ool c onverter galaxy s proprietary coolconverter provides: ? atented single-stage power conversion architecture, control, and magnetic design allow unprecedented power density and efficiency in an isolated power supply. an advanced microcontroller reduces parts count while adding features, performance, and flexibility in the design. ? ow common-mode noise as a result of lower capacitance in the transformer from balanced winding design. protection and control v alid input voltage range: the converter measures the input voltage and will not allow operation outside of the input voltage specification. as shown by the graphs, hysteresis is added to both the high and low voltage to prevent the converter from turning on and off repeatedly when the voltage is held near either voltage extreme. at low line this assures the maximum input current is not exceeded; at high line this assures the semicon- ductor devices in the converter are not damaged by ex cessive voltage stress. on/off logic option: the on/off control logic can be either negative (standard) or positive to enable the converter. for negative logic the on/off pin is brought to below 1.0v with respect to the ?nput pin to enable the converter. the pull down must be able to sink 100 a. for positive logic the on/off pin is brought to greater than 4.0v with respect to the ?nput pin and be limited to less than 10v. to request the p ositive logic version, add the suffix (p) to the stan- dard part number. the on/off pin has a built-in pull up resistor of approximately 100k ? to +5v. application notes
GAQW1V240 ?4 www.galaxypwr.com p art no. 02-gaq-07 rev. 2.0 ?041405 galaxy power inc. 155 flanders road w estborough, ma 01581 t elephone: 508-870-9775 fa x: 508-870-9796 e-mail: info@galaxypwr.com output over voltage protection: the output voltage is constantly monitored by the microprocessor with a redundant secondary-side measurement circuit that both shuts down the duty cycle and triggers the microprocessor to shut down. if the output voltage exceeds the over-voltage specifi- cation, the microprocessor will latch the converter off. to turn the converter on requires either cycling the on/off pin or power to the converter. this ad- v anced feature prevents the converter from damaging the load if there is a converter failure or application error. if non-latching is required, consult factory. thermal shutdown: the printed circuit board temperature is measured using a semiconductor sensor. if the maximum rated temperature is exceeded, the converter is latched off. to re-enable the converter requires cycling the on/ off pin or power to the converter. if non-latching is r equired, consult factory. control options: as the behavior of the circuit is determined by firmware in the microcontroller, specific customer r equirements such as ? non-latching thermal protection ? custom valid input voltage range ? controlled delay from initiating an on/off signal f or power sequencing can be accomplished with no change to hardware. the standard behavior was chosen based on system design experience but we understand that customers often have their own requirements. please consult galaxy power for your special needs. remote sense: the output voltage is regulated at the point where the sense pins connect to the power output pins. to t al sense compensation should not exceed 0.4v or 1 0% of vout, whichever is greater. safety: an external input fuse must always be used to meet these safety requirements. external output trimming application notes increase in output voltage (%) 1000 100 10 0 1 2345678910 t rim resistance (k ? ) 1.2v trim-up +sense t rim ?sense t rim up t rim down 10k ? t rimpot r trim-down = 100 ?2 5.11k ? ? % { } decrease in output voltage (%) 1000 100 10 0 1 2345678910 t rim resistance (k ? ) t rim-down t rim-up t rim-down r trim-up = 1.2(100+ ? %) _ (100+2 ? %) 5.11k ? 0.62 ? % ? % { } t rim: to trim the output voltage higher, connect the r equired trim resistor from the trim pin to the +sense pin. to trim the output voltage lower, con- nect the required trim resistor from the trim pin to the ?ense pin. the trim-down equation applies to all vo ltages.
p art no. 02-gaq-07 rev. 2.0 ?041405 www.galaxypwr.com GAQW1V240 ?5 galaxy power inc. 155 flanders road w estborough, ma 01581 t elephone: 508-870-9775 fa x: 508-870-9796 e-mail: info@galaxypwr.com gaqw1v24o operation efficiency 88 86 84 82 80 78 76 74 72 70 02040 output current (a) efficiency (%) 36v vin 48v vin 75v vin 30 10 15 35 25 5 power dissipation 12 10 8 6 4 2 0 020303540 output current (a) power dissipation (w) 36v vin 48v vin 75v vin 10 515 25 start up 1) vout 1v/div 4ms/div 2) iout 10a/div 3) enable 5v/div ch1 ch2 ch3 v oltage ripple 1) vout 20mv/div 2 s/div 10 f ext cap 20mhz bw t ransient response 1) vout 200mv/div 200 s/div 2) iout 10a/div ch2 ch1 line/load regulation 1.23 1.21 1.19 1.17 01020 output current (a) output voltage (v) 36v vin 48v vin 75v vin 15 530 25 35 40 setpoint accuracy 0.1417% line regulation 0.0167% load regulation 0.0167% line & load regulation 0.0292%
GAQW1V240 ?6 www.galaxypwr.com p art no. 02-gaq-07 rev. 2.0 ?041405 galaxy power inc. 155 flanders road w estborough, ma 01581 t elephone: 508-870-9775 fa x: 508-870-9796 e-mail: info@galaxypwr.com gaqw1v24o operation back bias 1) vout 500mv/div 10ms/div 45 40 35 30 25 20 15 10 5 0 02030 8090 ambient temperature ( c) output current (a) 300 lfm 200 lfm 100 lfm 10 40 70 50 60 thermal derating crosswise airflow over voltage protection 1) vout 500mv/div 200s/div over-current protection 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 46 52 output current (a) output voltage (v) 48 50 47 49 51 note: over-current protection is blip-mode (aka hiccup). 36v vin 48v vin 75v vin 45 40 35 30 25 20 15 10 5 0 02030 8090 ambient temperature ( c) output current (a) 300 lfm 200 lfm 100 lfm 10 40 70 50 60 thermal derating lengthwise airflow
p art no. 02-gaq-07 rev. 2.0 ?041405 www.galaxypwr.com GAQW1V240 ?7 galaxy power inc. 155 flanders road w estborough, ma 01581 t elephone: 508-870-9775 fa x: 508-870-9796 e-mail: info@galaxypwr.com ordering information galaxy power inc. warrants to the original purchaser that the products conform to this data sheet and are free from material and workmanship defects for a period of two (2) years from the date of manufacture, if this product is used within specified conditions. galaxy power inc. r eserves the right to make changes to the product(s) or information contained herein without notice. no liability is assumed as a result of their use or application. no rights under any patent accompany the sale of any such products or information. for additional details on this limited warranty consult the factory. standard model input output max number voltage voltage current ga qw 1v240* 48v 1.2v 40a * options: p= positive logic version; high = on e= 0.18" pins ( .01") m= 0.145" pins ( .01") s= 0.12" pins ( .01") t= t uned model** **t (tuned model) option designed for higher di/dt and ? i applications, the transient response has been modified to take advan- t age of the capacitance on the customer's pcb. this unit requires a minimum load capacitance of 5600 f with an impedance magnitude of less than 0.005 ? at 15khz. it offers a minimum 3x improvement in the peak response compared to a standard unit. ref. .27 0 min. .01 1 .385 8 bottom view 2 .2 8 .15 .14 2 .00 0 pin 4 .60 0 pin 5 .45 0 pin 6 .30 0 pin 7 .15 0 pin 8 .0 0 0 p in 3 .600 pin 2 .300 p in 1 0.0 0 .9 0 package detail pin function pin dia. (in.) 1+ input 0.040 2 on/off 0.040 3 input 0.040 4 output 0.060 5 sense 0.040 6t rim 0.040 7+ sense 0.040 8+ output 0.060 notes: 1. mechanical tolerances x.xxx in. = 0.005 in. x.xx in. = 0.01 in. 2. pin material: brass with tin/lead plating over nickel 3. workmanship: meets or exceeds ipc-a-610b class ii pin configuration ?ottom view example part no.: (all options shown) ga q w1v240 p s t p art number options: positive logic version optional pin lengths e = 0.18" m = 0.145" s = 0.12" tuned model
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