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Hold-up Module HUGD-50 Series - 13 Pages

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Catalogue excerpts

Օ Power fail mode : when the input vol-tage drops below the power fail voltage˻ threshold a power fail˻ signal is activated and the HUGD-50 disconnects input and output and connects the hold-up capacitor to the output.At this point the DC/DC converters are poweredby the capacitor. When 90% of the usable stored energy in the capacitor is activated and operation will stop as the energy reaches zero. Normal operation mode : in normaloperation mode with the capacitor charged andthe input bus is between the output power fail˻ and 40VDC, the HUGD-50 consumes only power to keep the capacitor charged (i.e.less than 1W. The voltage drop between input and output islower than 150mV in the worth case (50W powerand 9 VDC input voltage) The HUGD-50 will operate indefinitely until the input voltage drops below the power fail voltage˻ threshold. > Unique Product for Hold-Up SolutionՕ Reduce Capacitance by 80% High efficiency (98%) Օ Power range : from 4W to 50W Compatible with 9-36 or 16-40VDC ConverterՕ Include monitoring signals Programmable inrush current limitation > The GAIA Converter Hold up deviceHUGD-50 provides a state-of-the-art solution to the problem of maintaining electronic system in operation during input bus drop-out with enoughtime. Usually this approach uses very largecapacitors because they are only charged at the voltage at which power fail. The Gaկa Converter HUGD-50 module provides an alternative solu-tion to reduce the amount of capacitance neededby charging the hold up capacitor at a high vol- tage (typically 38V) while limiting the input current. The HUGD-50 needs to be connected betweenthe line source and DC/DC modules (if an EMIfilter and /or a pre-regulator are used, the HUGD-50 is connected between them and the converters). Basically the HUGD-50 charges theexternal capacitor to 38V while powering theDC/DC converters. If the power fails, the HUGD-50 generates a signal and the converters are powered from the external capacitor. The HUGD-50 can be used either with 16-40V or 9-36V input voltage DC/DC converters since thepower fail voltage˻ is externally adjustable between 8.8V and 15.3V by the user.The HUGD-50 features 3 modes of operations: Charging operation mode : when theinput voltage ramps-up and reaches the start- up charge threshold (which is set at 1Vdc above the իpower fail voltage), the HUGD-50 beginsto charge the external capacitor at 38 VDC while powering the dc/dc converter. the chargingcurrent is controled and externally adjustablebetween 100mA and 2A by a resistance. The capacitor charging time depends on the charging current. When the capacitor voltage reaches 34V, (representing 90% of charge) the signal (active,floating output collector) ۫capacitor chargedis activated and the HUGD-50 enters in the nor- mal operation mode. > (/T) : option for -55۰C start up operating temperature.(/S) : option for screening and serialization REDEFINING THE SOURCE OF POWER Gaia Converter FC97-027.09/06 Revision J For locations, phone, fax, E-Mail see back cover size="-1">

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Hold-up monitoring Circuit : The hold-up monitoring circuit monitors the chargingstatus of the hold-up capacitor. The circuit generates 2 isolated flags : the capacitor charged flag (CC) and the capacitor discharged flag(CD).These flags can be used at system level for manage- ment of power interruption (VME system, PCI, ...)The HUGD-50 features 3 modes of operations : Charging operation mode Օ Normal operation mode power fail modeThe following figure represents the HUGD-50 series block diagram.HUGD-50 Block Diagram > The HUGD-50 module includes 3 main circuits :Օ An input monitoring circuit An...

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tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:4.00pt "Palatino Linotype", serif; } .font1 { font:5.00pt "Tahoma", sans-serif; } .font2 { font:6.00pt "Tahoma", sans-serif; } .font3 { font:7.00pt "Tahoma", sans-serif; } .font4 { font:10.00pt "Tahoma", sans-serif; } .font5 { font:11.00pt "Tahoma", sans-serif; } .font6 { font:22.00pt "Tahoma", sans-serif; } AIA HUGD-50 Sries ■Grade 4- Electrical Specifications Data are valid at +25°C, unless otherwise specified. Parameter Conditions Limit or typical Units HUGD-50 Input Permanent input voltage Full temperature load Minimum VDC 9...

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Hi-RelGrade HUGD-50 Series 5- Switching Frequency 7- Reliability Data > ParameterConditionsLimit or typicalSpecifications Switching frequencyFull temperature rangeUi min. to max.No load to full loadNominal, fixed200 KHz 6- Isolation > ParameterConditionsLimit or typicalSpecifications Electric strength test voltageInput to output /No isolation CharacteristicsConditionsTemperatureSpecifications Mean Time Between Failure (MTBF)According to MIL-HDBK-217FGround fixed (Gf)Case at 40CCase at 85аC1.500.000 Hrs590.000 HrsAirborne, Inhabited,Cargo (AIC)Case at 40CCase at 85аC730.000 Hrs300.000 HrsMean Time...

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CharacteristicsConditionsLimit or typicalPerformances Operating ambient temperaturerange at full loadAmbient temperature *MinimumMaximum- 40C+ 90аCOperating case temperaturerange at full loadCase temperatureMinimumMaximum- 40C+105аCStorage temperature rangeNon functionningMinimumMaximum- 55C+ 125аCThermal resistanceRth case to ambient in free airnatural convectionTypical12C /W Note * : The upper temperature range depends on configuration, the user must assure a max. case temperature of + 105аC. The HUGD-50 series operating case temperature must not exceed 105C. The maximum ambient temperature...

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tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:5.00pt "Tahoma", sans-serif; } .font1 { font:6.00pt "Tahoma", sans-serif; } .font2 { font:7.00pt "Tahoma", sans-serif; } .font3 { font:9.00pt "Tahoma", sans-serif; } .font4 { font:10.00pt "Tahoma", sans-serif; } .font5 { font:11.00pt "Tahoma", sans-serif; } HUGD-50 Sries Hi-Rel Gradel 9- Environmental Qualifications The modules have been subjected to the following environmental qualifications. Characteristics Conditions Severity Test procedure Climatic Qualifications Life at high temperature Duration Temperature / status of unit...

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