rev. june 01, 2005 page 1 of 10 www.power-one.com f4804 input filter data sheet 80vdc @ 4a output di/dt ? applications differential and common mode filtering for dc-dc converters with 48 v and 24 v input: ? telecommunications ? data communications ? distributed power solutions features ? maximum current 4 a ? maximum operating input voltage 80v ? 100v/50v 100ms transient withstand capability ? differential lc-filter stage ? surface mounted design ? small footprint ? only 0.75 sq. in. ? low profile: 0.339? [8.61 mm] maximum ? low weight: 0.18 oz [5 g] ? -40c to 85c ambient temperature range ? no airflow required up to 3 a current @ 85c ? enables q & & ? family converter compliance with en55022 and fcc class b requirements conducted emissions ? ul 60950 recognition in u.s. & canada, and demko certification per iec/en 60950 ? rohs compliant (q4 2005) description the f4804 input filter minimizes the conducted and radiat ed emissions generated by switch mode dc-dc converters, and allows board designs utilizing q & & ? family converters to easily meet stringent class b conducted emissions requirements. using the f4804 filter as the primary power-conditi oning device in front of any of the q & & ? family converters will provide a ?worry-free? emi design. unlike most available off-the-shelf filter modules, the f4804 contains, in addition to common mode noise reduction components, a di fferential lc-filter stage, which guarantees compliance with conducted noise standards in the whole frequenc y range from 150 khz to 30 mhz, including fundamental switching frequency and its harmonics. test results show headroom of 15-20 db for conducted noise quasi-peak levels, in relation to class b requirements; see figs. 2-8. f4804 filter is designed specific ally for distributed power solutions in conjunction with q & & ? family dc-dc converters. low profile and small size (only 0.75 sq. in.) in a surface mount package helps the system designer save real estate on the system board, and simplifies the layout. a single f4804 filter can be used with multiple converters, and is capable of providing up to a nominal 4 a to the converter input bus. it can provide up to 3 a at 85c ambient with no airflow.
rev. june 01, 2005 page 2 of 10 www.power-one.com f4804 input filter data sheet 80vdc @ 4a output di/dt ? electrical specifications conditions: t a =25oc, no airflow, vin=48 vd c, unless otherwise specified. parameter notes min typ max units absolute maximum ratings input voltage 1 continuous 0 100 vdc operating ambient temperature -40 85 c storage temperature -55 125 c electrical characteristics operating input voltage range 1, 2 0 48 80 vdc maximum operating current 85 c ambient, no airflow 3 3 adc 85 c ambient, airflow 300 lfm [1.5 m/s] 4 adc voltage drop at maximum load 4 a 0.32 vdc voltage drop ? typical application loaded with q48x30033 (3.3 v, 30 a) 4 0.16 vdc efficiency at typical load loaded with q48x30033 (3.3 v, 30 a) 99.6 99.7 % conducted noises, quasi-peak level 5 loaded with q48x30033 (3.3 v, 30 a) - main frequency and low harmonics up to 5 mhz 40 45 dbv - high frequencies up to 30 mhz 35 48 dbv additional notes: 1. absolute maximum voltage and maximum operating voltage are fo r the filter itself; check maximum rating for corresponding dc-dc converters. filter will not be damaged with reversed input voltage. 2. designed primarily for 48 v applications, filter can be used with both 48 v converters (operating range from 36 v to 72 v) a nd 24 v converters (operating range from 18 v to 36 v). typi cal filter application schematic is shown on fig. 1. 3. maximum current at any ambient temperature without airflo w can be calculated as imax = [4 - 0.025*(tamb-45)] a, with constraint imax 4 a. 4. letter x denotes either t or s, i.e. filter module is loaded either with q48t30033 through-hole or q48s30033 surface mounted converter. 5. typical emi plot for conducted emissions (with fully loaded q48x30033 converter connected to the filter output, see schematic fig. 1) is shown on fig. 2. plot was taken by i ndependent test laboratory tuv. tuv report confirms compliance with class b requirements according en-55022 (cispr-22) and fcc standards.
rev. june 01, 2005 page 3 of 10 www.power-one.com f4804 input filter data sheet 80vdc @ 4a output di/dt ? rload vin (+) vin (-) on/off vout (+) vout (-) trim sense (+) sense (-) q family converter (top view) 47uf ceramic c2 cin f4804 vsource + +in -in -out +out (top view) input filter c1 + fig. 1: typical f4804 application schematic with q & & family converter (negative on/off logic). values c1, c2 and cin depend on the specific converter input and output voltage. fig. 2: conducted emissions plot (quasi-peak va lues: "x", average values: "+") for q48x30033 in conjunction with f4804 filter. limits shown are for quasi-peak (upper limit) and average (lower limit ) values. c1 = 2200 pf, c2 = 3300 pf, cin = 47 f.
rev. june 01, 2005 page 4 of 10 www.power-one.com f4804 input filter data sheet 80vdc @ 4a output di/dt ? fig. 3: conducted emissions plot (quasi-peak va lues: "x", average values: "+") for q48x30025 in conjunction with f4804 filter. limits shown are for quasi-peak (upper limit) and average (lower limit ) values. c1 = 2200 pf, c2 = 3300 pf, cin = 47 f.
rev. june 01, 2005 page 5 of 10 www.power-one.com f4804 input filter data sheet 80vdc @ 4a output di/dt ? fig. 4: conducted emissions plot (quasi-peak va lues: "x", average values: "+") for q48x30020 in conjunction with f4804 filter. limits shown are for quasi-peak (upper limit) and average (lower limit ) values. c1 = 2200 pf, c2 = 3300 pf, cin = 47 f.
rev. june 01, 2005 page 6 of 10 www.power-one.com f4804 input filter data sheet 80vdc @ 4a output di/dt ? fig. 5: conducted emissions plot (quasi-peak va lues: "x", average values: "+") for q48x30018 in conjunction with f4804 filter. limits shown are for quasi-peak (upper limit) and average (lower limit ) values. c1 = 2200 pf, c2 = 3300 pf, cin = 47 f.
rev. june 01, 2005 page 7 of 10 www.power-one.com f4804 input filter data sheet 80vdc @ 4a output di/dt ? fig. 6: conducted emissions plot (quasi-peak va lues: "x", average values: "+") for q48x30015 in conjunction with f4804 filter. limits shown are for quasi-peak (upper limit) and average (lower limit ) values. c1 = 2200 pf, c2 = 3300 pf, cin = 47 f.
rev. june 01, 2005 page 8 of 10 www.power-one.com f4804 input filter data sheet 80vdc @ 4a output di/dt ? fig. 7: conducted emissions plot (quasi-peak va lues: "x", average values: "+") for q48x15050 in conjunction with f4804 filter. limits shown are for quasi-peak (upper limit) and average (lower limit) values. c1 = 0 pf (not mounted), c2 = 1500 pf, cin = 200 f.
rev. june 01, 2005 page 9 of 10 www.power-one.com f4804 input filter data sheet 80vdc @ 4a output di/dt ? fig. 8: conducted emissions plot (quasi-peak va lues: "x", average values: "+") for q48x08120 in conjunction with f4804 filter. limits shown are for quasi-peak (upper limit) and average (lower limit) values. c1 = 0 pf (not mounted), c2 = 1500 pf, cin = 200 f.
rev. june 01, 2005 page 10 of 10 www.power-one.com f4804 input filter data sheet 80vdc @ 4a output di/dt ? physical information (actual size shown) top view -in side view +in -out +out filter part numbering ordering information product series input voltage rated load current tape and reel environmental f 48 04 - r g filter module 80 v 4a no letter ? bulk r ? tape and reel g ? green/rohs compliant not populated ? non-rohs compliant the example above describes p/n F4804-Rg: 0-80 v i nput, 4 a @ 80 v output, tape and reel, and rohs compliant. please consult factory regarding av ailability of a specific (inc luding rohs compliant) version. nuclear and medical applications - power-one products are not des igned, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous env ironments, or nuclear control systems without the express wr itten consent of the respecti ve divisional president of power-one, inc. technical revisions - the appearance of products, including safety agency certifications pictured on labels, may change dependi ng on the date manufactured. specifications are subject to change without notice. pad/pin connections pad/pin # function +in vin (+) -in vin (-) -out vout (-) +out vout (+) ? all dimensions are in inches [mm] ? connector material: copper ? connector finish: gold over nickel ? converter weight: 0.18 oz [5 g] ? recommended surface-mount pads: min. 0.080? x 0. 112? [2.03 x 2.84] max. 0.092? x 0.124? [2.34 x 3.15]]
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