fl75r10a filter module 75vdc input maximum, 10a maximum datasheet ds_fl75l20_ 02132012 features ? rohs compliant ? small size: 50.8mm x 40.6mm x 12.7mm (2.0? x 1.6? x 0.5?) ? industry standard footprint and pin-out ? optimized for use with high frequency board mounted dc/dc converters ? printed-circuit board mountable ? iso 9001, tl 9000, iso 14001, qs 9000, ohsas 18001 certified manufacturing facility ? ul/cul 60950 (us & canada) recognized, vde 0805 (iec60950) licensed applications ? common-mode and differential-mode filtering of power supply dc input and output line ? computer application ? communications equipment delphi series filter module - fl75l20 75vdc max input, 20a max output current the delphi series fl75l20 filter module is the latest offering from a world leader in power systems technology and manufacturing -- delta electronics, inc. this filter module is designed to reduce the conducted common-mode and differential-mode noise on input or output lines of high-frequency switching power supplies and has a maximum current rating of 20a. it has the industry standard footprint and pin-out. with creative design technology and optimization of component placement, delphi fl75l20 filter module possesses outstanding electrical and thermal performance, as well as extremely high reliability under highly stressful operating conditions.
2 specifications general specifications output specifications input voltage, continuous typical 0~75v output current ta=60c, 2 m/s 20a input voltage, transient typical 100v output current ta=70c, 0 m/s 12a operation case temperature typical -40 j ~ 110 j common-mode insertion loss 50 [ circuit, 500 khz (typ) 28db storage temperature typical -55 j ~ 125 j differential-mode insertion loss 50 [ circuit, 500 khz (typ) 46db size (2.0?. x 1.6?x 0.5?) 50.8 x 40.6 x 12.7 mm electrical characteristics curves figure 1: typical common-mode insertion loss in a 50 [ circuit figure 2: typical differential-mode insertion loss in a 50 [ circuit internal schematics figure 3: internal schematics
3 thermal considerations thermal management is an important part of the system design. to ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temperature range of the module. convection cooling is usually the dominant mode of heat transfer. hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. thermal testing setup delta?s filter modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment. this type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. the following figure shows the wind tunnel characterization setup. the filter module is mounted on a test pwb and is vertically positioned within the wind tunnel. the space between the neighboring pwb and the top of the power module is 6.35mm (0.25?). thermal derating heat can be removed by increasing airflow over the module. figure 4 shows maximum output is a function of ambient temperature and airflow rate. to enhance system reliability, the power module should always be operated below the maximum operating temperature. if the temperature exceeds the maximum module temperature, reliability of the unit may be affected. note: wind tunnel test setup figure dimensions are in millimeters and (inches) 10 (0.4?) module a ir flow 50.8 ( 2.0? ) facing pwb pwb a ir velocit y a nd ambient temperature measured below the module figure 4: wind tunnel test setup figure dimensions are in millimeters and (inches). out gnd 16 mm (0.63 in) 27 mm (1.06 in) figure 5: temperature measurement location the allowed maximum hot spot temperature is defined at 110 j fl75l20 (standard) output current vs. ambient temperature and air velocity @ vin = 48v (either orientation) 0 5 10 15 20 25 25 35 45 55 65 75 85 ambient temperature ( j ) output current(a) natural convection 100lfm 200lfm 300lfm 400lfm 500lfm 600lfm figure 6: output current vs. ambient temperature and air velocity @ vin = 48v (either orientation)
4 application note: c2 through c5 can be 0.01 g f to o.1 g f. select the voltage rating to meet input-to-output isolation requirements. c1 should be the recommended value indicated in the power module data sheet. figure 7. recommended schematic when used as the input filter to a high-frequency dc-to-dc converter note: vdc input(+) and vdc input(-) planes should overlay each other, as should the vi(+) and vi(-) planes, as should the vout( +) and vout(-) planes. avoid routing signals or planes under the power module or the filter module. ensure all connections are low impedance. figure 8. recommended layout when used as the input filter to a high-freq uency dc-to-dc converter
5 application (continued) note: : c2 through c5 and c6 through c9 can be 0.01 g f to o.1 g f. select the voltage rating to meet input-to-output isolation requirements. c1 should be the recommended value indicated in the power module datasheet. figure 9. recommended schematic of filter module with two power modules
6 figure 10 shows the experimental result obtained by using this filter module, together with the recommended external components shown in figures 5 and 6. the q48sr3r335nr module is one of the delphi series quarter brick 3.3v, 35a dcdc converters. measured noise is greatly dependent on layout, grounding, cable orientation, and load characteristics and the variation is possible from various application conditions. figure 10 . q48sr3r335nr a conducted noise with fl75l20 input filter mechanical drawing top view side view bottom view pin length l: a=5.0mm; b=3.1mm dimensions are in millimeter and (inches). tolerances : x.xx ? 0.5 mm (0.02 in), x.xxx ? 0.25 mm (0.010 in) recommended hole pattern dimensions are in millimeter and (inches). tolerances : x.xx ? 0.5 mm (0.02 in), x.xxx ? 0.25 mm (0.010 in)
7 part numbering system fl 75 l 20 a product family input voltage product series output current space option code fl- emi filter 75- 0 ~ 75v l ? industry standard 20 - 20a a ? pin length=5.0mm b ? pin length=3.1mm model list module name input voltage (max.) current rating (max.) size (metric) size (english unit) fl75l05 a 75v 5a 25.4 x 25.4 x 10.2 mm 1.0 in. x 1.0 in. x 0.4 in. fl75l10 a 75v 10a 50.8 x 27.9 x 12.5 mm 2.0 in. x 1.1 in. x 0.5 in. fl75l20 a 75v 20a 50.8 x 40.6 x 12.7 mm 2.0 in. x 1.6 in. x 0.5 in. contact: www.delta.com.tw/dcdc usa: telephone: east coast: (888) 335 8201 west coast: (888) 335 8208 fax: (978) 656 3964 email: dcdc@delta-corp.com europe: telephone: +41 31 998 53 11 fax: +41 31 998 53 53 email: dcdc@delta-es.tw asia & the rest of world: telephone: +886 3 4526107 ext 6220 fax: +886 3 4513485 email: dcdc@delta.com.tw warranty delta offers a two (2) year limited warranty. complete warranty information is listed on our web site or is available upon requ est from delta. information furnished by delta is believed to be accurate and reliable. however, no responsibility is assumed by delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. no license is granted by implicat ion or otherwise under any patent or patent rights of delta. delta reserves the right to revise these specifications at any time, without notice .
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