Hi-Rel Grade, DC/DC Transient/Drop-Out Protection, 50 W

General Characteristics

  • Galvanic isolation input/output : non isolated
  • Power range : from 4 W to 50 W
  • Protections : input undervoltage lockout
  • Transient suppressor : 60 , 80, 100 Vdc
  • Leaded on option

Key Features

  • DO-160 C/D/E/F cat A, B and Z
  • Dedicated for Avionics/Military Applications
  • MIL-STD-1275 A/B/C/D
  • MIL-STD-704 A/D/E/F, EN2282, AIR2021E
  • Transient suppressor & brown out for Avionics/Defense

Series Description
The GAIA Converter pre-regulator PGDS-50 series designates a low profile power adaptator module designed to extend input bus voltage to meet system operation during voltage transients, spikes, cranking and drop out occuring in avionics or military systems. 
The PGDS-50 delivers an output voltage adapted to GAIA Converter DC/DC modules. This line of module is optimized to provide high power efficiency up to 96 % over the whole power range between 4W and 50W. 
The PGDS-50 features 4 modes of operations as follow: 
- Low line operation: Low line operation occurs when the input bus voltage drops down below the permanent input voltage range of the DC/DC converter. Then the PGDS-50 operates in "boost" mode to provide an output voltage compatible with DC/DC converter. The PGDS-50 series can sustain low line operation down to 6 V. 
- Power fail operation: An undervoltage lock-out stops operation and disables the "boost" mode for voltage below this low line operation. 
- Normal operation: Normal operation occurs between the permanent input voltage of DC/DC converter. The module is then operating in steady transparency state. 
- Transient operation: The PGDS-50 series clamps input transient up to 80 V / 100 ms or 100 V / 50 ms. 
The PGDS-50 series is compliant with the international input bus standards: 
- MIL-STD-704A/D/E/F, 
- AECMA EN2282, 
- GAM-EG13B/AIR2021E, 
- DO160D cat A, B and Z, 
- MIL-STD-1275A/B.
The design has been carried out with surface mount components and is manufactured in a fully automated process to guarranty high quality. Every module is tested with a GAIA Converter automated test equipment. The modules are potted with a bi-component thermal conductive compound and packaged in a metallic case to ensure the module's integrity under high environmental conditions.
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Product Selection

This product selection table includes all available versions. Other references may be offered – see technical datasheets.
For more information, please consult factory.

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Reference Status Output power Input voltage Max. transient input voltage Switching frequency Output voltage Output current Min. transient input voltage Case dimensions Standard electrical functions Adj. hold-up capa final voltage EMI Filter Hold up mode threshold voltage Operating case temp. range Case material Inrush current limiter Max drop out in nomal mode Charger switching frequency Max power in drop out operation DC resistance UVLO min Synchronization freq. range Voltage drop @ I max Weight Synchronization Transient elevator Power dissipation Options RoHS / SnPb
PGDS-50-N-K Active 50 W 17 - 37 Vdc 80.0 Vdc / 100 ms 500 KHz 9 - 36 Vdc 10.0 Vdc / 30 s 40.2 x 26.2 x 8.2 mm UVLO, ON/OFF TBD Vdc Basic -40 to 105 °C Metallic black anodized coating 20 Grams N Y S
PGDS-50-O-K Active 50 W 12 - 37 Vdc 100.0 Vdc / 50 ms 500 KHz 9 - 36 Vdc 6.0 Vdc / 1 s 40.2 x 26.2 x 8.2 mm UVLO, ON/OFF TBD Vdc Basic -40 to 105 °C Metallic black anodized coating 20 Grams N Y S

Output Nbr: S: Single output, B: Bi-outputs, D: Dual outputs, T: Triple outputs – Dual outputs products can be usable for single output or bi-outputs. Output Nbr E corresponds to a slave module (see DataSheet)
Case dimensions: L x W x H (maximum values in mm)
Standard electrical functions: Case: Case connection, OVLO: Input overvoltage lockout, UVLO: Input under voltage lockout, OCP: Output over current protection level, OPP: Output over power protection, OVP: Output over voltage protection level, SCP: Output short circuit protection, OTP: Over temperature protection, VIF: Pin for Input Current Ripple Reduction, SYNC: Pin for Synchronisation, TRIM: Pin for adjust ouput voltage, ITRIM: Pin for adjustement ouput current limitation, CC: Pin for capacitor charged signal, CD: Pin for capacitor discharged signal, UVLOadj: Pin for level undervoltage lockout adjust, VREF: Pin for output internal voltage reference, PF: Pin for power fail signal, SENSE: Pin for voltage regulation, REV.POL: Reverse polarity protection, SHARE: Pin for output current parallel sharing
Status NPR: Not preferred for new Design
Options: T Screening at start-up -55° C, Y High isolation 3000 Vdc, M On/Off function, S Screening and serialization, F Synchronization function, P Share function

Technical Documentation
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Materials Disclosure Disclaimer
Even though all possible efforts have been made to provide you with the most accurate information, we can not guarantee to its completeness and accuracy due to the fact that the data has been compiled based on the ranges provided and some information that may not have been provided by the subcontractors and raw material suppliers to protect their business proprietary information.