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Radiation-hardened power electronics introduced by VPT for orbital and deep-space applications

Posted by John Keller

BLACKSBURG, Va., 23 May 2013. VPT Inc. in Blacksburg, Va., is introducing the SVR series of radiation-hardened DC-DC power converters, point of load converters, and EMI filters for space applications in low Earth orbit (LEO), medium Earth orbit (MEO), geostationary orbit (GEO), deep space, and launch vehicles.

The SVR series includes 24 modules in seven product families based on space-proven heritage designs and available qualified to MIL-PRF-38534 Class K. These are out-of-the-box compliant to the aerospace Technical Operating Report (TOR) requirements for space power systems.

The power electronics modules offer maximum levels of radiation hardening with a total ionizing dose (TID) level of 100 kilorads. These products include enhanced low dose rate sensitivity (ELDRS) in the total dose rating. The single event effects (SEE) rating for these products is 85 MeV-cm2/mg.

All modules have been submitted to the Defense Logistics Agency (DLA) for Standard Microcircuit Drawings (SMDs) with most modules available on released SMDs.

The SVR series performance in space programs is guaranteed through the use of hardened semiconductor components, radiation lot acceptance testing (RLAT) of non-hardened components, and analysis.

The SVR series is characterized for TID performance including ELDRS and SEE according to VPT's DLA-approved radiation hardness assurance (RHA) plan per MIL-PRF-38534, Appendix G, Level R. Characterization is performed at the component level and at the SVR series hybrid level.

For more information contact VPT online at www.vptpower.com.

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