Active filter protects dc-dc converters to MIL-STD 1275A-D without any additional components

XP Power announces availability of its new 500W active filter unit for use in harsh electrical environments. The DSF500 is designed to protect dc-dc converters from the surges, spikes and ripples that are typically found on the electrical system of any military platform, such as an aircraft or vehicle. The filter meets the military specification, MIL-STD 1275A-D, without the need to incorporate any additional components. Platform mounted systems can utilize standard industrial dc-dc converters without the risk of failure or damage due to supply transients and noise. Input voltage is within the range 10 – 34 VDC. Output voltage is tracked and clamped to below 36 VDC.

The DSF500’s low loss, MOSFET-based protection circuit ensures that the unit can provide continuous reverse voltage protection. Attached systems are protected from incorrect, potentially damaging, electrical supply connections. The filter also protects against over current conditions. Should the demand exceed 28 Amps, a warning signal is given that can be used either to disable the DSF500 or turn off the attached devices in order to reduce the current. A disable function allows the system designer to turn off the unit remotely if required.

The unit measures 57.90 x 57.90 x 16.45 mm (2.28 x 2.28 x 0.65 inches). It is believed that no other competitor produces an active filter in such a small package that meets MIL-STD 1275A-D and can deliver 28 Amps. Compliance to electro-magnetic immunity MIL-STD 461E specification can also be achieved by following steps detailed in an applications note available from XP Power.

For further information and reader enquiries:

Note to editors:

XP Power is committed to being a leading provider of power solutions, including AC-DC power supplies, DC-DC converters. With ISO9001:2000, XP Power offers total quality, from in-house design through to manufacturing facilities around the world. The company offers the widest range of power products available from one source and unrivalled technical and customer support, aiding both vendor consolidation and cost reduction programmes. XP has 25 sales offices throughout Europe and North America.

XP Power Ltd, a London Stock Exchange listed public company, has design centres in Pangbourne and Sawbridgeworth (UK), Boston (Massachusetts), and Sunnyvale and Anaheim (California). The design teams, together with those of partner companies, push back the boundaries of cost and technology, providing market leading power products. A dedicated Added Value Engineering team configures customer specific solutions. Using in-house CAD and design expertise, XP promise a rapid response. The applications team provide technical support to help customers integrate and use XP power products worldwide.

Back to Press Releases