magnetek peg via s.giorgio 642 52028 - terranuova bracciolini (ar) tel. +39 055 91951 fax +39 055 9195248 release 0 .b p/n 38520110000 magnetek inc. ngl16.5 - w48v3.3v 16.5w dc - dc converter features wide input voltage range (19.2 ? 72 vdc) output 3.3v 5a size 2.0?l x 2.0?w x 0.5?h high efficiency, typically 85% at 3.3v output adjustable output voltage low ripple and noise input to output isolation at 1500vdc metal baseplate fixed frequency (270 khz) synchronization to external secondary clock undervoltage lockout (uvlo) operating amb.temperature - 40/+85c with no derating no forced cooling needed ul, csa, ce approval s pending description and applications the ngl 16.5w dc - dc converter is part of ng series, which rapresents the magnetek?s family of high efficiency low power dc - dc converters. these modules feature high reliability, high efficiency and a widely varying range of input voltages (from 19.2 to 72 vdc) with the possibility of a careful regulation of output voltage, so they are ideally suited for telecommunications, industrial and computer applications. the compact size of these units make them ideal for inclusion in original design of systems which demand small size, low cost and high reliability. the standard feature set includes output trim allowing the user to adjust the output voltage to a value within 10% of the nominal output voltage, and th e clock input for synchronization to an external secondary clock, while the case ground pin is optional . p/n 38520110000 preliminary
ngl16.5 - 48v3.3v 16.5w dc - dc converter - 2 - magnetek inc. specifications (typical value standard at nominal input line, full load, 25c ambient temperature unless otherwise specified) electrical specifications table 1. output specifications conditions value output voltage (vo) 3.3v output voltage trimming see note 1 +/ - 10% voltage accuracy +/ - 0.5% start - up overshoot 1% max load regulation low load to full load +/ - 1.0% line regulation low line to high line +/ - 0.5% admissible capacitive load 2000 m f ripple and noise vol tage vimin?vimax; io=ionom (20mhz bw) see note 2 50mvpk - pk temperature coefficient (tc) d vo/ d t < 0.02%/c switching frequency fixed 270khz transient response deviation settling time io=1a to 4a to 1a dio/dt= 1a/ m s, vi=48v (response within +/ - 1% vo) s ee note 3 +/ - 100mv max 100 m s max electrical specifications table 2. input specifications conditions value nominal input voltage (vinom) 48v input voltage range io=0?ionom see note 4 19.2 - 72v maximum input current (iimax) vi=19.2v; io=iomax s ee note 5 1a input reflected ripple current io=0?ionom 30mapk - pk inrush current < 1a 2 sec no load input current vimin?..vimax., io=0 40ma rise time vinom, io=ionom resistive load capacitive load (2000 m f) 5ms 12ms electrical specifications tab le 3. isolation specifications conditions value isolation voltage in/out in/case out/case see note 6 1500vdc 1500vdc 500vdc isolation capacitance 1500pf isolation resistence > 10m w operating range temperature maximum rating - 40/+85c storage tempe rature maximum rating - 50/+115c p/n 38520110000
ngl16.5 - 48v3.3v 16.5w dc - dc converter - 3 - magnetek inc. general specifications conditions value efficiency 85% cooling free air convection thermal resistance ( q jc ) < 5c/w case material metal five - sided case weight 60g mtbf bellcore 332 (40c case) 1 500000 hr. approvals and homologations pending en60955 ul1950 csa950, ce relative humidity non condensing 5% to 95% rh protections current protection hiccup mode overcurrent protection threshold vinom 5.5a +/ - 10% input undervoltage protection see note 7 notes: 1 output voltage trim allows the user to adjust the output voltage to a pre - defined value within 10% of the nominal output voltage. if an external resistor (r tdown ) is connected between the trim and - vout pins, the output voltage dec reases (see wiring * in figure 3 ). if an external resistor (r tup ) is connected between the trim and +v pins, the output voltage increases (see wiring ** in figure 3). 2 measured with capacitance an external capacitance c = c 1 +c 2 = 100nf(ceramic) + 10 m f (ta ntalum) 3 no external output capacitance. 4 the module is provided with hysteretic control of input line between 19.2v - 72v. 5 caution: to preserve the module?s flexibility, internal fusing is not included; however, to achieve the maximum system protection, input fusing is always highly recommended based on inrush current and maximum input current. 6 1500vdc between input and output pins both in short circuit state 1500vdc between input short circuited pins and the case 500vdc between output short circuited pins and the case 7 the lockout circuitry turns the module off when the input voltage is below 17.5v +vout trim - vout - vout +vin - vin ck - input dc/dc power module r tdown r tup ? basic wiring for external output trimming p/n 38520110000
ngl16.5 - 48v3.3v 16.5w dc - dc converter - 4 - magnetek inc. characteristic curves this section provides typical characteristics for ngl converter module as input/output cha racteristics, efficiency, rise time, output ripple voltage and transient response to load variation from 50% to 75% of full load. rise time conditions: clock = open, vin = 48v, io =5a,ta =25c resistive load capacitive load = 2000 m f converter start up time conditions: clock=open vin=19.2v io=5a ta=25c p/n 38520110000
ngl16.5 - 48v3.3v 16.5w dc - dc converter - 5 - magnetek inc. ripple and noise conditions: clock=open conditions: clock=open vin=19.2v io=5a ta=25c vin=72v io=5a ta=25c p/n 38520110000
ngl16.5 - 48v3.3v 16.5w dc - dc converter - 6 - magnetek inc. transient response output voltage response to step change in load current. io= 2.5a to 5a to 2.5a freq.=500hz vin=19.2v ta=25c output voltage response to step change in load current. io= 2.5a to 5a to 2.5a freq.=500hz vin=19.2v ta=25c output voltage response to step change in load current. io=2.5a to 5a to 2.5a freq.=500hz vin=19.2v ta=25c p/n 38520110000
ngl16.5 - 48v3.3v 16.5w dc - dc converter - 7 - magnetek inc. feature des criptions current limit for protection in a output overload condition, the unit is equipped with an hiccup current limit protection so that it is able to work on short circuit condition for an undefinite time on all operating temperature range. the unit operates normally once the output current is brought back into its specified range . syncronization the ck_input pin allows the synchronization of the fixed switching frequency to an external clock. this function is compatible with a 3.3vpp signal, coupl ed through a 1nf capacitor on a impedance 3 3kohm. however the power supplier start - up even without any sync. clock. p/n 38520110000
ngl16.5 - 48v3.3v 16.5w dc - dc converter - 8 - magnetek inc. 2.00 (50.80) 1.80 (45.72) in: dc 19.2-72v, 1a + vout: dc 3.3v 5a dc/dc converter 2 . 0 0 ( 5 0 . 8 0 ) 0 . 2 0 x 2 ( 5 . 0 8 x 2 ) + vin + vout - vout - vout trim - vin ck-input 0 . 4 0 x 3 ( 1 0 . 1 6 x 3 ) 0 . 4 0 ( 1 0 . 1 6 ) 0 . 9 0 ( 2 2 . 8 6 ) 0 . 4 9 ( 1 2 . 5 ) 0 . 1 5 ( 3 . 8 1 ) 0.10 (2.54) 0 . 0 0 8 ( 0 . 2 0 ) side label includes: product code,...... top view side view bottom view solder-plated brass 3 plcs (+vin, -vin, ck-input) solder-plated brass 4 plcs (+vout, trim, -vout) mechanical drawings dimensions are in inches and (millimeters) tolerances: x.xx 0.02 in. (0.5mm), x.xxx in.(0.25mm). pins: 0.04 in. (1.00mm) dia p/n 38520110000
ngl16.5 - 48v3.3v 16.5w dc - dc converter - 9 - magnetek inc. for additional information, please contact : europe - magnetek peg - power electronics group - s. p. a via s.giorgio 642 - 52028 - terranuova b.ni, arezzo, italy phone: (+39) 055.9195.1 fax: (+39) 055.9195.248 u. s.a. - magnetek inc. 8966 mason avenue - chatsworth, california - 91311,usa phone: (+1) 818.727.2216 fax: (+1) 818.727.2276 toll - free number: (+1) 800.621.0733 internet address and e - mail : - hppt:// www.magnetek.it - hppt: // www.magnetek.com - info@ magnetek.it we reserve the right to amend specifications and designs at any time under our policy of constant product improvement. p/n 38520110000
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