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Front-end Protection Module LGDS-300 Series - 13 Pages

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Catalogue excerpts

Ultra compact limitor moduleՕ Transient suppressor module 80V MIL-STD-704A/D/E/F, EN2282, AIR2021E Օ DO160E cat A, B and Z Transient suppressor module 100VՕ MIL-STD-1275A/B/C/D, Spike suppressor module 600VՕ MIL-STD-704A/D/E/F, EN2282, AIR2021E DO160E cat A, B and ZՕ Power range : up to 300W Inrush current limitation > The GAIA Converter limitor LGDS-300 is an ultracompact power adaptator module designed toallow operation during voltage transients and spikes, occuring in avionics or military systems. The LGDS-300 delivers an output voltage adapted to GAIA Converter DC/DC modules. This moduleis optimized to provide high power efficiency upto 99% over the whole power range up to 300W.The LGDS-300 features 3 modes of operationsas follow:Օ Transient and spike operation : The LGDS-300 can sustain input transient upto 80V/100ms or 100V/50ms and spike up to 600V during 20յs with 50 ohms impedance .The LGDS-300 series is compliant with the inter-national input bus standards :- MIL-STD-704A/D/E/F - AECMA EN2282 - GAM-EG13B/AIR2021E- DO160E cat A, B and Z- MIL-STD-1275A/B/C/DThe design has been carried out withsurface mount components and is manufactured in a fully automated process to guarranty high quality. Every module is tested with a Gaa Converter automated test equipment. The mo-dules are potted with a bi-component thermalconductive compound and packaged in a metallic case to ensure the modules integrity under severe environmental conditions. Normal operation : Normal operation occurs in between the per- manent input voltage of the DC/DC converter;The LGDS-300 is then operating in steadytransparency state. Power fail operation :The power fail operation occurs when theinput bus drops below 9 Vdc low voltage limit ; an undervoltage lock-out stops the LGDS-300. > (/T) : option for -55C start up operating temperature.(/S) : option for screening and serialization Input Voltage Range Output Transient O : 100V/50ms K REDEFINING THE SOURCE OF POWER Gaia Converter FC08-059.04/08 Revision B For locations, phone, fax, E-Mail see back cover size="-1">

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Normal Mode > (Vout=Vin-Vdrop) OCP > Start-up > Vin>Vst Surge UVLO Power fail Mode > (output disabled) End of Surge OTP > OCP Transient Mode > (Vout=Vlim) OTP: Over Temperature ProtectionOCP: Over Current Protection Power failoperation area Normal operationArea Transient operationArea output voltage (Vdc) 0510 1520253035 4045 0102030405060708090100 Gaia Converter FC08-059.04/08 Revision B

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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; } AIA LGDS-300 Sries Hi-Rel Gradel 4- Electrical Spcifications Data are valid at +25°C, unless otherwise specified. Parameter Conditions Limit or typical Units LGDS-300 Input Permanent input voltage range (Ui) Full temperature range Full load Minimum Maximum VDC VDC 9 42 in normal...

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300W max 20A max > Pout (W) Permanent operationArea Transient operationArea >

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tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:4.00pt "Courier New", monospace; } .font1 { font:4.00pt "Tahoma", sans-serif; } .font2 { font:5.00pt "Tahoma", sans-serif; } .font3 { font:7.00pt "Tahoma", sans-serif; } .font4 { font:9.00pt "Tahoma", sans-serif; } .font5 { font:10.00pt "Tahoma", sans-serif; } .font6 { font:20.00pt "Tahoma", sans-serif; } .font7 { font:7.00pt "Times New Roman", serif; } AIA irn_3nn *eries JjfldT 4- Electrical Characteristics (continued) The following figures describe the LGDS-300-O-K maximum admissible energy in compliance with standard requirements...

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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:9.00pt "Tahoma", sans-serif; } .font3 { font:10.00pt "Tahoma", sans-serif; } .font4 { font:11.00pt "Tahoma", sans-serif; } AIA LGDS-300 Sries Hi-Rel Gradel 5- Isolation Parameter Conditions Limit or typical Specifications Electric strength test voltage Input to output All pins to case / Minimum No isolation 500 VDC / 1 min Isolation resistance 50 VDC, all pins to case Minimum 100 MOhm 6- Protection Functions Limit or Characteristics Protection...

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CharacteristicsConditionsLimit or typicalPerformances Operating ambient temperaturerange at full loadAmbient temperature *MinimumMaximum- 40C+ 85аCOperating 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 LGDS-300 series operating case temperature at full load must not exceed 105C. The maximum ambient...

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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; } LGDS-300 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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The LGDS-300 includes 3 types of protection devices. > The LGDS-300 provides a circuit breaker function that latchesthe output off if the load current exceeds the current limit threshold for a duration. The circuit breaker functionautomatically attempts to restart power after a load currentfault at a low duty cycle to prevent the LGDS-300 fromoverheating. > detection time The over current protection function protectsthe module against over load of any duration and restoresthe module to normal operation when the over load isremoved. It operates in hiccup˻ mode by testingperiodically if an overload...

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