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November 4, 2020updated 23 Nov 2021 2:02pm

High reliability DC-DC converters for military applications

As a leading manufacturer of high-reliability DC-DC converters and EMI filters, VPT has extensive experience of supplying its advanced solutions for a wide range of defence industry requirements.

The company’s VXR Series of isolated DC-DC converters is the newest and most innovative solution in VPT’s extensive line of high reliability COTS products.

Building on an extensive design heritage, the VXR Series benefits from a wide input voltage range, high efficiency, and next-generation packaging. The VXR family is optimised for a broad range of applications, from military ground vehicles to commercial and military aircraft that endure the most extreme environmental conditions, including severe vibration, shock and temperature cycling.

The VXR Series employs a fixed frequency, low noise, wide input voltage range topology which features extended high and low input transient capability to simplify overall power system design and compliance.

Precision controlled synchronous rectification achieves optimal efficiency over a wide input range, minimising external heatsink requirements and reducing power dissipation. A proprietary control loop design also provides fast transient response without optoisolators.

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VPT’s patented epoxy encapsulated packaging is extremely resistant to solvent, chemical and salt environments and is fully compatible with high volume manufacturing processes, including cleaning solvents, high pressure sprays, wave solder, and aqueous wash.

A unique and integral metalised shield boosts system EMI compatibility. Dual-sided cooling coupled with reduced power dissipation simplifies your system’s thermal design.

VPT’s high-reliability COTS DC-DC converters have been developed to meet a wide range of demanding military requirements, including unmanned systems.

COTS products from VPT are available immediately from stock.


  • 5-250 watts
  • Wide input voltage range
  • Six-sided metal packages for maximum EMI shielding
  • -55°C to +105°C, no power derating necessary
  • High efficiency
  • Rugged environmental screening
  • J-STD-001, ISO-9001, IPC-A-610 Class 3 manufacturing
  • Available off-the-shelf and ready for fast delivery

An optional rugged epoxy V-SHIELD® encapsulated package with integral metalized EMI shield available for multiple models can also be fitted.

VPT’s COTS DC-DC converters are MIL-STD-1275, MIL-STD-704 A-F, MIL-STD-461, DO-160, ISO-9001, and DEF-STAN 59-411 certified and have been tested to JESD22, MIL-STD-810, and MIL-STD-883 standards.

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