Power Line Conditioner with Holdup


The VPX55-3HU 3U, VPX Power Line Conditioner with Holdup, is a 500 W, DC/DC power line conditioner that protects downstream DC/DC converters from MIL-STD 704B through F transients, low voltage conditions and power interruptions, and provides up to 50 milliseconds of holdup time at 500 W.


The VPX55-3HU is designed to meet standard 3U VPX, VITA 62 mechanical requirements with a 0.8 or 1.0-in. power supply slot, and is a perfect companion unit for all NAI VPX 28 VDC DC/DC converters. The VPX55-3HU COTS conditioner is specifically designed with NAVMAT component derating for rugged defense and industrial applications and is also designed to meet the many harsh environmental requirements of military applications. Input power required is 28 VDC.



  • Address the need for 3U VPX power applications needing an optional VITA 62 Energy Storage Module
  • Standard VPX-compatible connector per VITA 62
  • Compatible with System Management Bus per VITA 46.11
  • Off-the-shelf solution for VITA 46.0 and VITA 65 systems
  • Supports all VITA standard I/O, signals, and features
  • Protects DC/DC Converters From MIL-STD-704A through F Transients
  • Designed to work with the NAI VPX55-3 family of DC/DC Converters
  • Wedgelock, Plug-in Design (conduction-cooled)
  • Reverse Polarity Protection
  • Holdup
  • Standby Output
  • Built-in-Test (BIT)
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