Hi-Rel DC/DC CONVERTER MGDD-60 : 60W …

1 Gaia CONVERTER Revision D REDEFINING THE SOURCE OF POWERFor locations, phone, fax, E-Mail see back coverHi-Rel DC/DC CONVERTERMGDD-60 : 60W POWERHi-RelGradeHi-RelGrade12:1 Ultra Wide InputDual OutputsMetallic Case - 1 500 VDC Isolation1-General2-Product Selection4 Options : /T : option for -55 C start up operating temperature /S : option for screening and serializationThe MGDD-60 ultra wide input series designatesa full family of DC/DC power modules with a per-manent ultra wide input voltage range of 12-160 volts designed for use in distributed powerarchitecture where variable input voltage for mul-tiple battery and transient are prevalent makingthem ideal particularly for avionics and the MGDD-60 is compliant with the stringentrequirements of MIL-STD-1275E standard thatrequires systems to sustain any 2 Joules injectedspike that may occurs in less than 1ms.

2 While theprevious revision MIL-STD-1275D imposed only 15milliJoules injected to its 160 V maximum input voltage, theMGDD-60 series allows designer to sustain the MIL-STD-1275E spike with the simplest additionalprotection device : a 100V or higher serie includes dual output voltage choicesindividually isolated of 2 x 5 volts , 2 x 12 volts,2 x 15 volts and 2 x 24 volts with the modules are designed with LC networkfilters to minimize reflected input current modules include a soft-start, an inputundervoltage lock-out, a permanent short circuitprotection, a thermal protection and an outputovervoltage limitation to ensure efficient moduleprotections.

3 The soft-start allows current limita-tion and eliminates inrush current during start-up. The short circuit protection completely protectsthe modules against short-circuits of any durationby a shut-down and restores to normal when theoverload is modules are potted with a bi-component ther-mal conductive compound to ensure optimumpower dissipation under harsh environmental con-ditions. Ultra wide input range MIL-STD-1275D/E Nominal power up to 60 W Nominal dual output voltage from 5V to 48V High efficiency over the entire range (typ. 91%) Soft start Galvanic isolation VDC according to EN 60950 Integrated LC input filter Permanent short circuit protection External synchronisation External trim adjustment : -20/+10% No optocoupler for high reliability RoHS process Input Voltage RangeC : 2 x 5 VDCE : 2 x 12 VDCF : 2 x 15 VDCI : 2 x 24 VDCO utputPermanentR : 12-160 VDCDual output model.

4 mgdd - 60 -inputoutputTransient10,7 VDC / 1 soption/For locations, phone, fax, E-Mail see back cover2 MGDD-60 SeriesGaia CONVERTER Revision D Hi-RelGrade442- Product Selection (continued)Options/T, /S/T, /S/T, /S/T, /SConverter Selection Chart mgdd -60 - R - C /Number of Outputs :D : dual outputInput voltage range :R : 12-160 VDCO utput voltage :See table page 1 Option :/T : -55 C start up operation/S : screening & serialization(consult application note screening grades )Current5 A 2,5 A 2 A 1,25 AReferenceMGDD-60-R-CMGDD-60-R-EMGDD-60- R-FMGDD-60-R-IOutput2 x 5 VDC2 x 12 VDC2 x 15 VDC2 x 24 VDCI nput range12-160 VDC12-160 VDC12-160 VDC12-160 VDCU sing various parallel or series connections of outputs, and the 80/110% trim capability, allows to cover almostthe complete range of output voltages from 4V to 52V as shown in the table Connection8 - 11 VDC 19,2 - 26,4 VDC24 - 33 VDC 38,4 - 52,8 VDCR eferenceMGDD-60-R-CMGDD-60-R-EMGDD-60-R- FMGDD-60-R-IParallel Connection4 - 5,5 VDC 9,6 - 13,2 VDC 12 - 16,5 VDC 19,2 - 26,4 VDCFor locations, phone, fax.

5 E-Mail see back cover3 MGDD-60 SeriesGaia CONVERTER Revision D Hi-RelGrade443- Block Diagram and Pin DescriptionPin Description :UVLO : this pin gives the ability to user to increase theUVLO value (Under voltage Lock out), in order to stopconverter operation when input voltage reach a : Input bus return : This pin give direct access to Input filter capacitorin order to increase drastically EMI performance usingan external capacitance connected between Vif and Gias close as possible to the CONVERTER : Input bus : Auxiliary Ground. This pin is a low noise groundthat can be used for monitoring low power circuitry thatcannot be referenced to high power noisy ground.

6 GIAis internally connected to : Sync pin is a bidirectional pin that allows user tosynchronize several converters together or to an externalsignal. see chapter 13 for sync signal : auxiliary supply voltage that can be used for externallow power monitoring StartUVLOSyncOn/OffOtpVIFVO2GO2VO1GO1 VIGISet pointVtrimMagneticFeedbackFBC+ switchingCurrent sensing5 VGIAThe MGDD-60 is based on a new generation platform thatenhenced flyback topology allowing ultra wide inputrange above 12:1 excursion from 12 to 160 V input MGDD-60 includes also a new isolated error amplifiertechnology that provides an accurate full range : when this pin is pulled to GIA, the CONVERTER stopsoperation.

7 When CONVERTER encounter a over temperaturecondition, this pin is internally pulled to Gia levelGo2 : return terminal of output 2VO2 : output 2 terminalGO1 : return terminal of output 1VO1 : output 1 terminal. The output one is consideredas the main output, and must be priorly : Feed Back Compensation can be used for optimizingthe dynamic regulation response for fast load shift. Innormal operation, this pin should be let not connected,consult factory for more : Voltage trimming input: using simple resistorconnected between this pin and Vo1 or Go1 allow userto trim ouput voltage in -20/+10% double output combined to the trim function allowsmultiple combinations to achieves most of the stan-dards required voltages 5V-9V-10V-12V-15V-24V-28V-30V-32V-48V-52 V, and more MGDD-60 module block diagram together with thepin allocation and description are presented in locations, phone, fax, E-Mail see back cover4 MGDD-60 SeriesGaia CONVERTER Revision D Hi-RelGrade444- Electrical SpecificationsData are valid at +25 C, unless otherwise.

8 Modules have to be mounted with heatsink for electrical * : Regulation is measured with both outputs in parallel ** : The ripple output voltage is the periodic AC component imposed on the output voltage, an aperiodic and random component (noise) has also to be noise can be reduced by adding 1 external decoupling capacitor connected between Gin and Gout. These capacitance should be layed-out as close as possible fromthe CONVERTER . The ripple output voltage is measured by connecting a ceramic chip capacitor Co accross Vo and Go pins (C=100 F if Vo<5 Vdc C=10 F if Vo>5 Vdc)ParameterConditionsLimit ortypicalUnits Dual OutputMGDD-60 - RInputNominal input voltageFull temperature rangeNominalVDC28 Permanent inputvoltage range (Ui)Full temperature rangeMin.

9 - input voltageFull loadMinimumVDC/S10,7 / 1 Undervoltage lock-out (UVLO)Turn-on voltage (pin Uvlo open)Turn-off voltage (pin Uvlo open)MaximumMaximumVDCVDC11,810,5 Start up timeUi nominal within 3 msNominal outputFull load : resistiveMaximumms30 Reflected ripple currentUi nominal, full load atswitching freq. BW = 20 MHzMaximum% load input powerUi nominalNo loadMaximumW1 Standby input powerUi nominalMaximumW1 OutputOutput voltageFull temperature rangeUi min. to loadNominalNominalNominalNominalVDCVDCVD CVDC2 x 52 x 122 x 152 x 24 Set Point accuracyAmbient temperature : +25 cUi nominal, 75% loadMaximum%+/- 2 Total output power with both outputsFull temperature rangeUi min.

10 To current per output5V output12V output15V output24V outputFull temperature rangeUi min. to ,02,52,01,25 Unbalanced outputMinimum load on Vo1for Vo2 proper operarationTypicalW6 Ripple output voltage **5V output12V output15V output24V outputUi nominalFull loadBW = 20 MHzMaximumMaximumMaximumMaximummVppmVppm VppmVpp200240300520 Output regulation *(Line + load + thermal)Ui min. to to full loadMaximum%+/- 1,5 Output voltage trimAs a function of output voltageMinimumMaximum%%80110 Maximum admissiblecapacitive load5V output12V output15V output24V outputUi nominalFull loadPer outputMaximumMaximumMaximumMaximum F F F F2 200820680470 EfficiencyUi nominalFull loadTypical%up to 91 For locations, phone, fax, E-Mail see back cover5 MGDD-60 SeriesGaia CONVERTER Revision D Hi-RelGrade444- Electrical Characteristics (continued)Typical efficiency MGDD-60 -R-C at 25 C (@60W)Input voltage Vin (Vdc)Efficiency (%)Typical efficiency MGDD-60 -R-E at 25 C (@60W)Input voltage Vin (Vdc)Efficiency (%)