power electronics group preliminary release 0.a magnetek inc. n n g g m m 1 1 4 4 . . 5 5 - - 4 4 8 8 v v 3 3 . . 3 3 v v s s m m t t v v e e r r s s i i o o n n 1 1 4 4 . . 5 5 w w h h i i g g h h e e f f f f i i c c i i e e n n c c y y l l o o w w p p o o w w e e r r d d c c - - d d c c c c o o n n v v e e r r t t e e r r s s m m t t v v e e r r s s i i o o n n f f f e e e a a a t t t u u u r r r e e e s s s wide input voltage range (19.2 ? 72 vdc) output 3.3v 4.4a compact size 57.25l x 40.6w x 12.9h (mm) total weight 32g. (1.13oz.) high efficiency, typically 86% at 48v input low ripple and noise input to output isolation at 1500vdc output current limiting: hiccup mode metal baseplate fixed frequency (270 khz) synchronization to external secondary clock input undervoltage lockout (uvlo) operating range temperature -40/+85c with no derating no forced cooling needed ul, csa, ce approvals pending d d e e s s c c r r i i p p t t i i o o n n a a n n d d a a p p p p l l i i c c a a t t i i o o n n s s the ngm14.5 dc/dc converter smt version 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 72vdc) 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 the clock input for synchronization to an external secondary clock, while the case ground pin is optional.
ngm14.5w ? 3.3v4.4a dc-dc converter smt version - 2 - magnetek inc. magnetek magnetek magnetek s s p p e e c c i i f f i i c c a a t t i i o o n n s s (typical value standard at nominal input line, full load, 25c ambient temperature unless otherwise specified) electrical specifications output specifications output voltage ( vo) 3.3v output current (io) vimin?.. vimax 0-4.4a 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 voltage vimin? vimax; io=ionom (20mhz bw) see note 1 20mvpk-pk temperature coefficient (tc) d vo/ d t < 0.02%/c switching frequency fixed 270khz transient response deviation settling time io=1.5a to 4a to 1.5a dio/ dt= 1a/ m s, vin=48v ( response within+/- 1%vo) see note 2 +/- 100mv max 100 m s max electrical specifications input specifications nominal input voltage ( vinom) 48vdc input voltage range io=0? ionom see note 3 19.2-72vdc maximum input current ( iimax) vi=19.2v; io=iomax see note 4 795ma 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) 8ms 12ms electrical specifications isolation isolation voltage in/out in/case out/case see note 5 1500vdc 1500vdc 500vdc isolation capacitance 1500pf isolation resistence > 10m w operating amb.temperature maximum rating -40/+85c storage temperature maximum rating -50/+115c
ngm14.5w ? 3.3v4.4a dc-dc converter smt version - 3 - magnetek inc. magnetek magnetek magnetek general specifications efficiency 86% cooling free air convection thermal resistance ( q jc ) baseplate to air < 14c/w case material metal baseplate and five-sided plastic case weight 32g mtbf bellcore 332 (40c case) 1500000hr. approvals and homologations pending en60955 ul1950 csa950, ce relative humidity non condensing 5% to 95% rh protection output current protection hiccup mode overcurrent protection threshold vinom 5.5a +/- 10% input undervoltage protection see note 6 notes: 1 measured with an external capacitance c= c 1 +c 2 = 100nf(ceramic) + 10 m f (tantalum) ? 2 no external output capacitance. 3 the module is provided with hysteretic control of input line between 19.2-72vdc . 4 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. 5 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? 6 the latched lockout circuitry turns the module off when the input voltage is below the minimum value .
ngm14.5w ? 3.3v4.4a dc-dc converter smt version - 4 - magnetek inc. magnetek magnetek magnetek characteristic curves rise time converter start up time figure 1. clock=open vin=48v io=4.4a ta=25c resistive load figure 2. clock=open vin=48v io=4.4a ta=25c capacitve load 2000 m f figure 3. clock=open vin=19.2v io=4.4a ta=25c
ngm14.5w ? 3.3v4.4a dc-dc converter smt version - 5 - magnetek inc. magnetek magnetek magnetek ripple and noise figure 4. clock=open vin=19.2v io=4.4a ta=25c figure 5. clock=open vin=72v io=4.4a ta=25c
ngm14.5w ? 3.3v4.4a dc-dc converter smt version - 6 - magnetek inc. magnetek magnetek magnetek transient response figure 6: output voltage response to step change in load current. io= 1.5a to 4a to 1.5a freq.=500hz vin=19.2v ta=25c figure 7: output voltage response to step change in load current. io= 1.5a to 4a to 1.5a freq.=500hz vin=48v ta=25c figure 8: output voltage response to step change in load current. io= 1.5a to 4a to 1.5a freq.=500hz vin=72v ta=25c
ngm14.5w ? 3.3v4.4a dc-dc converter smt version - 7 - magnetek inc. magnetek magnetek magnetek 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
ngm14.5w ? 3.3v4.4a dc-dc converter smt version - 8 - magnetek inc. magnetek magnetek magnetek note a: to guarantee the right insertion of the module. pad locations 50.85 polarization holes (see note a) 2.22 ? 1.7 (x2) 3 . 6 5 . 0 8 2 0 . 3 2 2 7 . 9 4 55.3
ngm14.5w ? 3.3v4.4a dc-dc converter smt version - 9 - magnetek inc. magnetek magnetek magnetek 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.
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