international safety standard approvals vde0805/en60950/iec950 file no. 10401-3336-1082 ul1950 file no. e136005 csa c22.2 no. 950 file no. lr41062c general specifications efficiency see table 80%, min. isolation voltage input/output 500vac, 710vdc, min. switching frequency fixed 300khz 5.0% approvals and vde0805, en60950 standards iec950, ul1950 csa c22.2 no. 950 case material black coated metal with non-conductive base material flammability ul94v-0 weight 80g (2.8oz) environmental specifications thermal performance operating ambient see curves note 11 operating case -25c to +105c non-operating -55c to +125c extended temp., -40c to +105c option, case, note 10 heatsink option, note 5 see curves derating see curves for baseplate cooling details relative humidity non-condensing 5% to 95% rh altitude operating 10,000 feet max. non operating 40,000 feet max. nfc40 series single and triple output [ 2 year warranty ] ? 40 watts in a 2.2 x 2.2 x 0.5 inch case ? base plate cooled patented topology ? remote on/off control ? short circuit protection ? industry standard pin-out ? ul, csa and vde safety approvals ? extended operating temperature range option ? fixed frequency operation providing 40w of power in a 2.2 x 2.2 x 0.5 inch package, the highly specified nfc40 series of dc/dc converters were designed with todays demanding applications in mind. inherent design specifications of the nfc40 include tight line and load regulation and high power density. standard features provided by all members of the nfc40 series are remote on/off, synchronization function, short circuit protection, overvoltage protection and an output voltage trim function. to maximize the board area available to system designers, the nfc40 footprint has been minimised without compromising on features or profile. a comprehensive package of heatsink and operating temperature options are included to further increase the flexibility offered. artesyn technologies has utilised its latest patented topology implemented in smt and hybrid technologies to achieve this performance level. typical applications for the nfc40 series include telecommunications, remote exchanges, automation equipment, back plane power architectures and distributed power. specification all specifications are typical at nominal input, full load at 25 c unless otherwise stated page 1 output specifications voltage adjustability all outputs, see note 8 10% total error band single outputs 2% typ., 3% max. see note 1 auxiliary outputs 3% typ., 5% max. ripple and noise 5hz to 20mhz 100mv pk-pk, max. all outputs 20mv rms transient response 0.25% fl to 0.5% fl 2% max. dev., 100s recovery temperature coefficient single outputs 0.02%/c max. auxiliary outputs 0.03%/c max. overvoltage protection single output clamp type triple output see table short circuit protection continuous automatic recovery minimum main output singles 0a current triples, to maintain auxiliary 0.5a output regulation input specifications input voltage range 24v 18 to 36vdc 48v 36 to 72vdc input filter see note 9 external capacitor remote on/off logic compatibility cmos and ttl on >1.5v or open collector off <0.4v synchronization function operating frequency control frequency control range 10% sync signal negative-going pulse, maximum 25% of duty cycle logic compatibility cmos/ttl us patent no. 4621311
input output ovp (3) max. output input typical model number (5, 10) voltage (2) voltage current current (4) efficiency metric inserts imperial inserts 18-36vdc 5vdc 6.2vdc 8a 2.15a 80% nfc40-24s05-m nfc40-24s05 18-36vdc 12vdc 15vdc 3.5a 2.1a 82% nfc40-24s12-m nfc40-24s12 18-36vdc 15vdc 18vdc 2.8a 2.1a 82% nfc40-24s15-m nfc40-24s15 18-36vdc 5/12vdc 6.2vdc/none 7.5/0.75a 2.15a 80% nfc40-24t05-12-m nfc40-24t05-12 (6) 18-36vdc 5/15vdc 6.2vdc/none 7.5/0.75a 2.15a 80% nfc40-24t05-15-m nfc40-24t05-15 (6) 36-72vdc 5vdc 6.2vdc 8a 1.1a 81% nfc40-48s05-m nfc40-48s05 36-72vdc 12vdc 15vdc 3.5a 1.05a 83% nfc40-48s12-m nfc40-48s12 36-72vdc 15vdc 18vdc 2.8a 1.05a 83% nfc40-48s15-m nfc40-48s15 36-72vdc 5/12vdc 6.2vdc/none 7.5/0.75a 1.1a 81% nfc40-48t05-12-m nfc40-48t05-12 (6) 36-72vdc 5/15vdc 6.2vdc/none 7.5/0.75a 1.1a 81% nfc40-48t05-15-m nfc40-48t05-15 (6) mechanical notes a all pins are actual to within 0.010 inch (0.25mm) diameter. b tolerances: imperial 0.xx 0.02 inch 0.xxx 0.005 inch metric 0.x 0.5mm 0.xx 0.13mm unless otherwise specified. c metric dimensions in brackets, e.g. 1.250 (31.75mm). d copper tracks must not be routed under the four converter stand-offs. 1.800 (45.72) 0.15 (3.8) min. 0.05 (1.3) 1.900 0.010 (48.26 0.25) square 0.4 (1.02) dia. typ. 0.020 0.010 (0.51 0.25) 0.50 (12.7) 0.100 (2.54) 0.300 7.620 0.200 (5.080) 0.500 (12.700) 0.600 (15.24) 0.800 (20.32) 0.22 0.03 (5.6 0.8) dia. stand-off (4 places) metric: m3 tap thru. (4 places) designated with the suffix '-m' at the end of the model number imperial: #4-40 vnc-2b tap. thru. (4 places) designated without the suffix '-m' at the end of the model number 0.200 (5.08) 0.600 (15.24) 1.100 (27.94) 1.250 (31.75) 0.20 (5.10) 2.20 (55.90) square 1 2 3 4 5 6 7 8 9 all dimensions in inches (mm) notes 1 total error band is defined at the static output regulation at 25c, includ- ing initial setting accuracy, line voltage within stated limits and load cur- rent within stated limits. 2 nominal input voltages are 24vdc and 48vdc. 3 overvoltage protection threshold. any main output overvoltage clamps the output to a very low output voltage. a prolonged overvoltage condition will cause the converter to fail. 4 maximum value at full load, nominal input voltage. 5 for top-mounted heatsink option with metric screws, add -mx or -my to these model numbers. for side-mounted heatsink option, add -me or -ms to the model number e.g. nfc40-48s05-mx . for top-mounted heatsink option with imperial screws, add -1x or -1y to these model numbers. for side-mounted heatsink option, add -1e or -1s to the model number e.g. nfc40-48s05-1x . 6 for triple output units, common pins (5 and 8) should be connected externally. 7 output v1 must return to common 1 and outputs v2 and v3 to common 2 and 3 respectively in order to meet noise and regulation specifications. 8 the external trim function enables the tailoring of the output voltage to the applications exact requirements. adjustments within 10% are possible. on the triple output models the auxiliary output voltages (output 2 and 3) will vary proportionally to the main output. 9 an external filter capacitor is required for normal operation. the capacitor should be capable of handling 1a/2a ripple current for 48v/24v models. artesyn suggests: nippon chemi-con sxe series, 220f/100v for the nfc40-48xxx-m and the nippon chemi-con lxf series, 1500f/50v for the nfc40-24xxx-m. 10 extended operating temperature range. to specify an nfc40 that operates down to C40c, add the suffix 4 or -4 to the model number e.g. nfc40-48s05-m4 or nfc40-48s05-4 for metric and imperial screw measurements respectively. 11 case temperature must not exceed +105c. curve may be extended or restricted depending on available cooling. auxiliary load regulation nfc40-xxt05-12-m 0 200 400 600 750 11 12 13 14 15 output voltage output current (ma) 5 volt output (a) 4.0 2.0 .50 6.0 7.5 auxiliary load regulation nfc40-xxt05-15-m 0 200 400 600 750 13 14 15 16 17 output voltage output current (ma) 5 volt output (a) 4.0 2.0 .50 6.0 7.5 18 pin connections (6,7) pin number single output triple output 1 + input + input 2 C input C input 3 control control 4 no connection + vout 2 5 no connection common 2, 3 6 no connection C vout 3 7 + output + vout 1 8 common common 1 9 trim trim 40 watt wide input dc/dc converters dc/dc converters | 40w dc/dc page 2 http://www.artesyn.com
10k trim up/down trim down trim up pin 7 pin 8 pin 9 -40 -20 0 20 40 60 80 100 120 ambient temperature ( c) output power (%) 100 75 50 25 0 a b c d "-4" option 71 -40 -20 0 20 40 60 80 100 120 ambient temperature ( c) output power (%) 100 75 50 25 0 "-4" option a b c d side mounted 21.08 (0.83) 21.08 (0.83) - mx or -1x - my or -1y derating curves the derating curves shown are based on measurements of actual power supplies and reflect artesyn technologies conservative design guidelines. adherence to these guidelines contributes to the high reliability of our products by restricting the maximum operating semiconductor junction temperatures to 125c which is well below the component manufacturers maximum limits. key to power derating curves: a natural convection. b 150 linear feet per minute forced air flow. c 300 linear feet per minute forced air flow. d maximum case temperature power derating curve without additional heatsink power derating curve with side mounted heatsink heatsink mounting options heatsink options: two heatsink kits are available for the nfc40: top mounted and side mounted. each heatsink may be oriented parallel to or perpendicular to the direction of the pins, thus providing optimum flexibility for cooling requirements. top mounted heatsink if board area is at a premium in your application then the top mounted heatsink should be used. this heatsink kit comes com- plete with screws and is mounted as shown in the diagram over. to fit the heatsink, place it in the required orientation, and tighten the four screws. the order number for the top mounted heatsink kit with metric screws is: nfc40-htsk-t . the order number for the top mounted heatsink kit with imperial screws is: nfc40-htsk-t-i . side mounted heatsink with many applications, e.g. rack systems, the profile must be kept to a minimum. the side mounted heatsink is intended to meet the requirements of low profile applications. the nfc40 with this heatsink option is 12.7mm (0.5 inch) high. the kit contains two side mounted heatsinks, which must be fitted opposite to one another on the nfc40. the order number for the side mounted heatsink is: nfc40-htsk-s factory fitted heatsinks as a further option, artesyn technologies offers factory fitted heatsinks. simply add the suffix as described by the diagrams above to the part number: e.g. nfc40-48s12-my or nfc40- 48s12-1y for metric and imperial screws respectively. top mounted side mounted 76.2 (3.00) side mounted 76.2 (3.00) - ms or -1s - me or -1e -40 -20 0 20 40 60 80 100 120 ambient temperature ( c) output power (%) 100 75 50 25 0 "-4" option a b c d power derating curve with top mounted heatsink external output trimming (8) output can be externally trimmed by 10% using either method shown below. page 3 40 watt wide input dc/dc converters 40w dc/dc | dc/dc converters
page 4 http://www.artesyn.com ds_nfc40_19990913.pdf
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