PSM28 SpaceVPX Power Supply Module

Frontgrade’s PSM28 VPX is a 125W (nominal) 3U SpaceVPX Power Supply Module designed to plug into the RPS-PS & RPS-9X-PS systems, supporting 28V and 100V inputs and providing 12V system voltages at 125W (nominal). For increased power delivery, the PSM28 VPX modules can operate in parallel current sharing functionality.

The PSM28 VPX is a 3U SpaceVPX form factor power supply supporting either unregulated 28V or 100V input power busses and converting to a local 12V (VS1) rail with 125W nominal (288W peak) output power to the RPS-PS and RPS-9X-PS system.  The PSM28 VPX combines the VITA 78.0 power supply and 6-channel Power Supply Switch profiles to create a main, unswitched, 12V rail and 6 additional switched 12V rails for the remaining plug-in cards within a single module. Each rail can support up to 100W of continuous power after derating. For applications requiring more power, the PSM28 VPX can operate in parallel in a current sharing configuration.

Features:

Input Power
•    22V to 36V Input range, 28V Nominal 
      o    Alternative 90V to 120V Input range, 100V Nominal
•    42V for 2 seconds Survival Limit (28V nominal input version)
•    150uF Max Input Capacitance 
•    Isolated from secondary > 1 Meg ohm at 50V (28V nominal input version)
•    Pulse Discretes for ON and OFF 
•    MIL-STD-461 Revision G capable 
•    15 pin D-sub Connector

Output Power
•    12V at 288W (peak) 
•    12V at 125W (thermal/reliability nominal) 
•    Seven 12V outputs groups 
      o    Sharable 
      o    Six Switchable Outputs
      o    One non-switchable Output
      o    9A max per group

Mass / Volume / Thermal
•    Mass: less than 600 gm (estimated)
•    Maximum operating temperature: +65°C
•    Efficiency @ 125W Output Power: >90%

OPERATIONAL LIFE / RELIABILITY AND PERFORMANCE
•    System reliability over 0.9
•    Maximum operating temperature: +65°C
•    System SEU rate: No more than one per year for typical LEO Missions
•    TID of 25 krads (Si) or 100 krads (Si) optional assuming 100 mils of shielding with 6061-T6 Aluminum
•    Level-2 parts pedigree per EEE-INST-002 and PEM-INST-001 is available