technical enquiries email: sales@murata-ps.com, tel: + 508 339 3000 1 features: 9 48 vin, isolated, 4:1 fixed conversion ratio 9 220 watt nominal output (at 48 vin, 55 c, 200 lfm) 9 170 watt output (at 38 vin, 55 c, 200 lfm) 9 industry standard 1/8 brick footprint 9 remote enable (primary side , positive or negative) 9 over-temperature and over current protection 9 direct parallel operation for higher power applications 9 rohs compliant table 1 input characteristics notes & conditions (1) min typ. max units input voltage operating range 36 48 55 vdc input voltage absolute maximum 60 vdc turn-on threshold 36 37.5 vdc turn-off threshold 34 35.5 vdc input undervoltage lockout hysteresis voltage 2 vdc turn-on threshold 56 58 vdc turn-off threshold 55 57 vdc input overvoltage lockout hysteresis voltage 2 vdc maximum input current steady-state (23 a out) 5.5 adc no-load input current enabled state, on load (48 vin) 80 ma disabled input current disabled state (48 vin) 6 ma input reflected ripple current 50 ma p-p inrush current transient 0.2 a 2 s enable ? negative logic version internal 10 k pull-up to 5 v. on state range off state range -0.1 2.4 0.8 5.0 vdc vdc enable ? positive logic version internal 100 k pull-down to gnd. on state range off state range 2.4 -0.1 5.0 0.8 vdc vdc table 2 output characteristics notes & conditions (1) min typ. max units output voltage set point (vo=vin/4 +0/-0.5%) vin = 48.0 v, io = 0 a 11.94 11.98 12.0 vdc output load regulation io = 0 to 15 a 0.7 v output voltage total regulation vin = 36 to 55 v, io = 0 to 15 a, 8.3 13.75 vdc vin = 42 to 53 v, io = 0 to 15 a, 9.7 13.25 vdc output ripple voltage & noise 20 mhz bandwidth 90 150 mv p-p output current operating range 0 15 a efficiency vin = 48 v, io = 15 a 96 % turn-on time vin present: enable to 90% vout 10 ms start-up inhibit time enabled: vin applied to 90% vout 80 ms transient response (3) 25% step, 0.1a/ s, vo 160 mv recovery time 100 s maximum output capacitance (4) 3000 f bus converte r eus15-120 model
2 table 1 protection characteristics notes & conditions (1) min typ. max units output over-current shutdown non-latching 21 23 25 a re-start rate tbd msec short circuit current peak tbd ap over temperature shutdown (5) non-latching 125 130 c over temperature restart hysteresis 10 c table 2 general specifications notes & conditions (1) min typ. max units isolation voltage input to output 2250 vdc isolation resistance input to output 10 mohm storage temperature range non-condensing -40 125 c operating temperature range ambient (7) -40 100 c thermal measurement location temperature (7) see mechanical drawing for location 120 c material flammability ul 94v-0 mtbf calculated (bellcore tr-332) 1 tbd x10 6 hrs demonstrated tbd x10 6 hrs dimension 2.28l x 0.9w x 0.48h (max) (57.9l x 22.9w x 12.19h mm max) weight grams table 3 standards compliance notes & conditions (6) ul/csa 60950 basic insulation en60950 certified by tuv notes: (1) vin = 48vdc, ta = 25 c, airflow = 200 lfm for all data unless otherwise noted. (2) output ripple voltage and noise is specified when measured with no external capacitance. (3) transient response is specified without a capacitor at the output of the converter. (4) product operates with an external capac itance greater than specified. for higher values please contact a celestica represe ntative. (5) thermal shutdown is monitored at the thermal measurement location (tml). see ?mechanical information? on page 3 for tml loc ation. (6) see ?safety considerations? shown on last page. (7) de-rating curves are conducted in a cont rolled environment. end application testi ng is required to ensure the thermal meas urement location temperature is below the maximum specified. (8) recommended airflow direction is from pin 1 to pin 3, or 3 to 1 (transverse airflow). bus converte r eus15-120 model
3 mechanical information figure 1 pin assignment table 4 pin # pin name function notes & conditions 1 vi(+) positive input voltage 2 en input enable / disable referenced to vi(-). positive logic: floating = enabled negative logic: floating = disabled 3 vi(-) negative input voltage 4 vo(-) negative output voltage 5 vo(+) positive output voltage bus converter eus15-120 model
4 efficiency curves figure 2 output voltage vs. current figure 3 vo (v) vs. io (a) and vin (v) 6 7 8 9 10 11 12 13 14 0 2 4 6 8 101214161820 55 vin 48 vin 42 vin 38 vin efficiency (%) vs. iout (a) and vin (v) 88% 89% 90% 91% 92% 93% 94% 95% 96% 97% 0 2 4 6 8 101214161820 55vin 48vin 42vin 38vin bus converter eus15-120 model
5 thermal derating curves (transverse) t tml =120c airflow from pin 3 to pin 1 fi g ure 7 iout (a) vs. tamb (c) and air flow (lfm) 38 vin 0 2 4 6 8 10 12 14 16 18 20 22 24 25 35 45 55 65 75 85 100 lfm 200 lfm 300 lfm 400 lfm iout (a) vs. tamb (c) and air flow (lfm) 42 vin 0 2 4 6 8 10 12 14 16 18 20 22 24 25 35 45 55 65 75 85 100 lfm 200 lfm 300 lfm 400 lfm iout (a) vs. tam b (c) and air flow (lfm) 55 vin 0 2 4 6 8 10 12 14 16 18 20 22 24 25 35 45 55 65 75 85 100 lfm 200 lfm 300 lfm 400 lfm iout (a) vs. tamb (c) and air flow (lfm) 48 vin 0 2 4 6 8 10 12 14 16 18 20 22 24 25 35 45 55 65 75 85 100 lfm 200 lfm 300 lfm 400 lfm figure 4 figure 5 figure 6 bus converte r eus15-120 model
6 figure 8 pout (w) vs. tamb (c) and vin (v) 200 lfm 0 25 50 75 100 125 150 175 200 225 250 275 25 35 45 55 65 75 85 38 vin 42 vin 48 vin 55 vin bus converte r eus15-120 model
7 turn-on from vin (enable on) turn-on from enable (vin present) figure 9 ch3: en; ch2: vout figure 10 ch3: vin; ch2: vout vin=48v, io=15a, co=3000uf vin=48v, io=15a, co=3000uf output ripple/noise figure 11 vin=48v, io=15a vripple = 114 mvpp bus converte r eus15-120 model
safety considerations figure 12 ordering information the eus series of converters are certified to the standards list ed in the standards compliance section in the table above. i f this product is built into information technology equipment, the installation must comply with the above standard. an external input fuse (10 a recommended), mu st be used to meet the above requirements. the output of the converter [vo(+)/vo(-)] is considered to remain within selv limits when the input to the converter meets selv or tnv-2 requirements. the converters and materials meet ul 94v-0 flammability ratings. bus converte r eus15-120 model
|
