models vdc o utput b2-81 size (max.): 1.110 x 1.110 x 0.250 inches (28.19 x 28.19 x 6.35 mm) shown with ?ull wing?lead option, also available with straight leads. see section b8, case d, for dimensions and options. weight: 15 grams maximum. screening: standard, es, or 883 (class h). see section b9 for screening options, see section a5 for ordering information. single 5 12 15 dual ? ? 2 ? 5 description the mga series of dc/dc converters delivers 5 watts of output power from a wide input voltage range of 16 to 40 vdc with up to 74% efficiency. output models of 5, 12, 15, 5, 12 and 15 vdc meet a variety of system needs. all units withstand transients of up to 50 v for up to 50 milliseconds and operate over the full military temperature range of -55? to +125?. c onverter d esign the mga converters incorporate flyback topology with a typical constant switching frequency of 500 khz. isolation between input and output circuits is provided with a transformer in the forward path and a temperature compensated optical link in the feedback control loop. the feed-forward compensation design delivers an audio rejection of 50 db, typical, with input ripple as low as 50 ma p-p and output ripple as low as 100 mv p-p. output filter examples in figures 3 and 4 provide suggested solutions for systems where very low output ripple is required. tightly coupled magnetics minimize cross regulation in the mga dual output models. either output can provide up to 80% of the total available output power, providing the opposite output is carrying at least 20% of the total output power. the converter s short circuit current protection restricts the output current to approximately 115% of the full load output current. i nhibit f unction the mga converter s inhibit terminal disables internal switching, resulting in no output and very low quiescent input current. applying a ttl low voltage (0.8 v or less) to the inhibit terminal (pin 1) disables the output. leaving the inhibit terminal unconnected or connecting the inhibit terminal to an open collector gate enables the output. the inhibit terminal has an open circuit voltage of 9 to 11 v. in the inhibit mode the inhibit pin will source a maximum of 4 ma. see ?nhibit interface,?figure 2. mil-std-461 use interpoint s fmga-461 emi filter to pass the ce03 require- ments of mil-std-461c. s urface m ount p ackage the mga dc/dc converters can be surface mounted with pick-and- place equipment or manually. it is recommended that the case be attached with flexible epoxy adhesive or silicone which is thermally conductive (>1 watt /meter/?). internal components are soldered with sn96 (melting temperature 221?) to prevent damage during reflow. maximum reflow tempera- ture for surface mounting the mga converter is 220? for a maximum of 30 seconds. sn60, 62, or 63 are the recommended types of solder. hand soldering should not exceed 300? for 10 seconds per pin. the hermetically sealed metal cases are available in two different lead configurations. see section b8, cases d1 and d2. dc/dc c onverters 28 v olt i nput mga series 5 watt f eatures ?5 to +125? operation 16 to 40 vdc input fully isolated optocoupler feedback fixed frequency 550 khz typical topology ?single ended flyback 50 v for up to 50 ms transient protection inhibit function indefinite short circuit protection up to 74% efficiency
absolute maximum ratings typical characteristics inhibit recommended operating conditions b2-82 mga series 5 watt dc/dc c onverters output voltage temperature coefficient 100 ppm/? typ, 150 ppm/c max current limit 115% of full load typical isolation input to output any pin to case except case pins 100 megohm minimum at 500 v conversion frequency 500 khz typical 450 khz. min, 600 khz max inhibit pin voltage (unit enabled) 9 to 11 v input voltage range 16 to 40 vdc continuous 50 v for up to 50 msec transient case operating temperature (tc) ?5? to +125? full power ?5? to +135? absolute derating output power/current (tc) linearly from 100% at 125? to 0% at 135? electrical characteristics: 25? tc, 28 vdc vin, 100% load, unless otherwise specified. inhibit: ttl open collector logic low (output disabled) logic low voltage 0.8 v referenced to input common logic high (output enabled) open collector input voltage 16 to 40 v output power 5 watts lead soldering temperature reflow 220? 30 sec. max sn60, 62 or 63 recommended solder hand solder 300? 10 sec. max. per lead storage temperature range (case) ?5? to +150? single output models mga2805s mga2812s mga2815s parameter conditions min typ max min typ max min typ max units output voltage +v out 4.95 5.0 5.05 11.88 12 12.12 14.85 15 15.15 vdc output current v in = 16 to 40 vdc 0 1000 0 417 0 333 ma output power v in = 16 to 40 vdc 5 5 5 w output ripple 10 khz - 2 mhz 250 450 100 500 100 600 mv p-p line regulation v in = 16 to 40 vdc 10 50 10 50 10 50 mv load regulation no load to full 10 50 10 50 10 50 mv input voltage continuous 16 28 40 16 28 40 16 28 40 vdc no load to full transient 50 ms 50 50 50 v input current no load 27 60 29 60 31 60 full load 279 263 259 ma inhibited 3 4 3 4 3 4 input ripple tc = 25? 50 200 50 200 50 200 ma p-p 10 khz - 10 mhz tc = ?5? to +125? 75 300 75 300 75 300 efficiency 64 69 68 74 69 74 % load fault 1 short circuit power diss. 1.5 2.0 1.2 1.9 1.2 1.8 w recovery 10 75 10 30 10 30 ms step load 50% ?100% ?50% load response 2 transient ?00 200 500 ?50 300 750 ?000 400 1000 mv pk recovery 3 200 500 400 1000 400 1000 s step line 16 ?40 ?16 vdc response 4 transient ?00 100 500 ?00 200 800 ?00 100 500 mv pk recovery 3 .4 1.0 0.5 1.3 0.5 1.3 ms start-up overshoot 0 0 200 0 0 500 0 0 500 mv pk delay 0 10 75 0 10 30 0 10 30 ms inhibit pin current inhibited 2.5 4.0 2.5 4.0 2.5 4.0 ma capacitance input to output 50 40 60 pf capacitive load 300 500 500 f notes 1. indefinite short circuit protection not guaranteed above 125? (case). 2. load transient transition time is >10 s. 3. recovery time is measured from application of the transient to the point at which vout is within regulation. 4. input step transition time is >10 s.
b2-83 mga series 5 watt dc/dc c onverters dual output models mga2805d mga2812d mga2815d parameter conditions min typ max min typ max units output voltage +v out 11.88 12 12.12 14.85 15 15.15 vdc ? out ?1.76 ?2 ?2.24 ?4.70 ?5 ?5.30 output current v in = 16 to 40 vdc 0 208 333 0 167 267 ma output power 1 v in = 16 to 40 vdc 5 5 w output ripple 2 10 khz - 2 mhz 120 300 120 300 mv p-p line regulation +v out 10 50 10 50 mv v in = 16 to 40 vdc ? out 40 180 40 180 load regulation +v out (balanced) 10 50 10 50 mv no load to full ? out (balanced) 50 200 50 200 cross reg. 3 effect on ? out 8 15 7 15= % input voltage continuous 16 28 40 16 28 40 vdc no load to full transient 50 ms 50 50 v input current no load 33 63 38 63 full load 267 263 ma inhibited 3 4 3 4 input ripple tc = 25? 50 200 50 200 ma p-p 10 khz - 10 mhz tc = ?5? to +125? 75 300 75 300 efficiency 67 73 68 73 % load fault 4 short circuit power diss. 1.3 1.7 1.3 1.6 w recovery 10 30 10 30 ms step load transient ?50 180 550 ?00 180 600 mv pk response 5, 6 recovery 7 200 500 200 500 s step line 16 ?40 ?16 vdc response 8 transient ?00 100 500 ?500 200 1500 mv pk recovery 7 0.8 2.0 1.6 4.0 ms start-up overshoot 0 200 500 0 200 500 mv pk delay 0 10 30 0 10 30 ms inhibit pin current unit inhibited 2.5 4.0 2.5 4.0 ma capacitance input to output 50 50 pf capacitive load 100 100 f electrical characteristics: 25? tc, 28 vdc vin, 100% load, unless otherwise specified. notes 1. up to 4 watts, 80% of the total output power is available from either output providing the opposite output is simultaneously carrying 20% of the total output power. each output must carry a minimum of 20% of the total output power in order to maintain regulation on the negative output. 2. applies to both +vout and ?out 3. cross regulation is specified for the following percentages of total output power: +po = 20% and ?o = 80% to +po =80% and ?o = 20% 4. indefinite short circuit protection not guaranteed above 125? (case). 5. load transient transition time is >10 s. 6. response of either output when the load for each output is simultaneously transitioned from 25% to 50% to 25% of total output power (5 watts). 7. recovery time is measured from application of the transient to the point at which vout is within regulation. 8. input step transition time is >10 s. a vailable soon , ask your i nterpoint rep for informa - tion
+ c 2 t 1 c 1 case c 3 mga2815s input common positive input positive output output common to load positive input input common positive output output common from input power source emi filter case t 1 negative output output common positive output input common case ground positive input inhibit pwm control error amp isolated feedback vr = dual output + + mga series 5 watt dc/dc c onverters b2-84 f igure 1: b lock d iagram diagrams and connections f igure 3: l ow n oise o utput f ilter mga s ingle o utput m odel f igure 4: l ow n oise o utput f ilter mga d ual o utput m odel the filter suggestions in figures 3 and 4 will further reduce the output ripple for systems requiring very low output noise. c1 = 0.27 f ceramic capacitor, 500v c2 = c4 = 6.8 f tantalum capacitor c3 = c5 = 0.27 f ceramic capacitor single output: t1 = 15t #28 awg winding on toroid, m = 5000 dual output: t2 = 10t #28 awg winding on toroid, m = 5000 f igure 2: i nhibit i nterface 200 pf 3.9 k 10 k inhibit input common 10 k 12 k 5 k 400 50 k 2n3904 10v mga vcc positive input + c 2 t 1 c 1 t 2 c 4 c 3 c 5 + to loads case mga2815d input common positive input positive output output common positive input input common positive output output common from input power source emi filter case negative output
smd numbers pin out top view mga 1 2 3 4 5 6 7 8 9 10 18 17 16 15 14 13 12 11 19 20 differently colored glass bead around pin one or dimple in header (bottom of case) indicates pin one. cover marking is oriented with pin one at the upper right corner. b2-85 mga series 5 watt dc/dc c onverters model numbering key mga 28 12 s z / es base model input voltage output voltage screening number of outputs (s = single, d = dual) gull wing lead option (straight leaded case has no designator in this position.) (standard screening has no designator in this position.) pin single output dual output 1 inhibit inhibit 2, 3 positive input positive input 4 no connection no connection 5, 6 input common input common 7, 8 case ground case ground 9, 10 no connection no connection 11, 12 positive output positive output 13 positive output output common 14 output common output common 15, 16 output common negative output 17, 18 no connection no connection 19, 20 case ground case ground typical performance curves: 25? tc , 28 vdc vin, 100% load, unless otherwise specified. f igure 9 f igure 11 output power (watts) mga2815d efficiency vs line & load efficiency (%) 30 80 40v 70 60 50 40 123456 16v 28v mga2815d 30 40 50 60 attenuation (db) 70 1 audio rejection 10 0.1 frequency (khz) output power (watts) mga2805s efficiency vs line & load efficiency (%) 30 80 40v 70 60 50 40 123456 16v 28v f igure 6 output power (watts) mga2812s efficiency vs line & load efficiency (%) 30 80 40v 70 60 50 40 123456 16v 28v f igure 7 30 40 50 60 attenuation (db) 70 1 audio rejection 10 0.1 frequency (khz) mga2805s f igure 10 f igure 8 output power (watts) mga2815s efficiency vs line & load efficiency (%) 30 80 40v 70 60 50 40 123456 16v 28v f igure 5: p in o ut s tandard m icrocircuit d rawing (smd) 5962-9309201hxc 5962-9309301hxc 5962-9309401hxc in process 5962-9308901hxc 5962-9309001hxc mga s eries s imilar p art mga2805s/883 mga2812s/883 mga2815s/883 mga2805d/883 mga2812d/883 mga2815d/883 replace the ??with a ??in the smd number to specify gull-wing leads. for exact specifications for an smd product, refer to the smd drawing. see section a3, smds, for more information. to meet specified performance, all pins must be connected except ?o connection?pins. see section b8, case d for dimensions and gull-wing lead option.
b2-86 mga series 5 watt dc/dc c onverters typical performance curves: 25? tc , 28 vdc vin, 100% load, unless otherwise specified. f igure 15 f igure 17 1ms/div turn-on into no load, mga2805s 1v/div. v in 20v/div. v out 200 s/div +v out load transient response (10% 90%), mga2815d 200mv/div. 10% to 90% 90% to 10% ? out =0.5w 100 s/div input line transient response (16v to 40v), mga2805s 20mv/div. v in 20v/div. v out f igure 12 100 s/div load transient response (10% 100%), mga2805s 50mv/div. 10% to 100% 100% to 10% f igure 13 200 s/div input line transient response (16v to 40v), mga2815d 100mv/div. v in 20v/div. +v out ? out f igure 16 f igure 14 100 s/div load transient response (50% 100%) mga2805s 50mv/div. 50% to 100% 100% to 50% f igure 21 output load (%) mga2815d/mga2812d cross regulation cond. a: 50% load +v; 10% to 50% ? cond. b: 50% load ?; 10% to 50% +v ? out voltage change (%) ? 0 5 10 20 30 40 50 ? ? ? ? 1 2 3 4 2815d 2812d 2812d cond b cond a 100 s/div +v out load transient response (10% 50%), mga2815d 100mv/div. 10% to 50% 50% to 10% ? out =2.5w f igure 18 500 s/div turn-on into no load, mga2815d 5v/div. v in 20v/div. +v out ? out f igure 19 f igure 20 output load (+v out %/? out %) mga2815d/mga2812d cross regulation (90?0% load on +v, 10-90% load on ?) ? out voltage change (%) ?0 0 10 90/10 70/30 50/50 30/70 10/90 ? ? ? ? 2 4 6 8 2815d 2812d 22222-001-dts rev a dq# 1034 all technical information is believed to be accurate, but no responsibility is assumed for errors or omissions. interpoint reserves the right to make changes in products or specifications without notice. mga series is a trademark of interpoint. copyright 1998 - 1999 interpoint. all rights reserved.
b8-9 case d c ases 0.060 (1.52) 0.075 (1.91) 0.030 (0.76) 0.100 (2.54) 4x 0.100 (2.54) 18x 1.000 (25.40) 1.000 (25.40) case d top view see figure 13 for pin configurations. materials header kovar/nickel/gold cover kovar/nickel pins kovar/nickel/gold, matched glass seal case dimensions in inches (mm) tolerance 0.005 (0.13) for three decimal places 0.01 (0.3) for two decimal places unless otherwise specified 1.110 max (28.19) 1.110 max (28.19) caution maximum reflow temperature is 220 c for a maximum of 30 seconds. sn60, sn62, or sn63 are the recommended types of solder. see below for solder mask instructions. hand soldering should not exceed 300 c for 10 seconds per pin. cover marking is oriented with pin one at the upper right corner. differently colored glass bead around pin one or dimple in header (bottom or side of case) indicates pin one. straight leads (this view shows straight leads.) mga series: screening ?standard, es, or 883 0.010 (0.25) 0.135 ref. (3.43) leads are solder dipped and lead dimensions are prior to solder dip. 0.08 (2.0) 0.010 (0.25) bottom of lead to bottom of case 0.055 (1.40) 0.070 (1.78) 1 1 top view case d 1.400 ref. (35.56) 0.010 (0.25) 0.08 (2.0) 0.250 max. (6.35) 0.50 (12.7) 2.115 ref. (53.72) 0.015 (0.38) seam seal 0.900 (22.86) 0.800 (20.32) 0.700 (17.78) 0.600 (15.24) 0.500 (12.70) 0.400 (10.16) 0.300 ( 7.62) 0.200 ( 5.08) 0.100 ( 2.54) 1.000 (25.40) 1 2 3 4 5 6 7 8 9 10 18 17 16 15 14 13 12 11 19 20 gull wing leads option differently colored glass bead around pin one or dimple in header (bottom or side of case) indicates pin one. cover marking is oriented with pin one at the upper right corner. 0.000 0.000 solder mask notes 1. pad dimensions are for the solder mask opening. lead common to each other can be connected underneath as desired. 2. ground pins should be connected to the center pad for improved grounding. 3. center pad should not have a solder mask. solder, copper, or au/ni plate are preferred over solder for adhesive attach. 4. solder coat to solder down converter. 5. if less rotation of case is desired, make the pad width 0.020inches (0.51 mm). pad length can be extended 0.010 inches (0.25 mm) towards the case body and as-desired dimension away from the case body. 6. do not exceed 220? as measured on the body of the converter (top or bottom). 7. attach the body of the case to the board with a thermally conductive adhesive or sn60, 62, or 63 solder. the adhesive can be electrically conductive as well. it can be applied as an underfill post solder or dispensed and cured prior or during solder. note: although every effort has been made to render the case drawings at actual size, variations in the printing process may ca use some distortion. please refer to the numerical dimensions for accuracy. f igure 13: c ase d f igure 14: c ase d s older m ask f igure 12: c ase d m aximum d imensions
c2-10 test (125? products) standard /es /883 (class h)* pre-cap inspection method 2017, 2032 yes yes yes temperature cycle (10 times) method 1010, cond. c, -65? to 150? no no yes method 1010, cond. b, -55? to 125? no yes no constant acceleration method 2001, 3000 g no no yes method 2001, 500 g no yes no burn-in method 1015, 160 hours at 125? no no yes 96 hours at 125? case (typical) no yes no final electrical test mil-prf-38534, group a subgroups 1 through 6: -55?, +25?, +125? no no yes subgroups 1 and 4: +25? case yes yes no hermeticity testing fine leak, method 1014, cond. a no yes yes gross leak, method 1014, cond. c no yes yes gross leak, dip (1 x 10 -3 ) yes no no final visual inspection method 2009 yes yes yes test methods are referenced to mil-std-883 as determined by mil-prf-38534. *883 products are built with element evaluated components and are 100% tested and guaranteed over the full military temperature range of ?5? to +125?. mor series mflhp series mfl series mhp series mtr series mqo series** mhd series mhv series mhf+ series mhf series** mga series msa series mgh series mch series fm-704a emi filter fmd**/fme emi filter fmc emi filter fmh emi filter fmga emi filter fmsa emi filter hum modules** lcm modules** lim modules qa screening 125? products 125? p roducts applies to the following products **mflhp series, mqo series, mhf series, fmd emi filters, hum modules, and lcm modules do not offer ?83?screening.
|
