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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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NASA NTRS2002

Low dose failures of hardened DC-DC power converters

Box-level total dose testing of the FOG (Fiber Optic Gyro) by IXSEA at ESA's GammabeamFacility were abruptly terminated at 8krad (Si) due to catastrophic failure (complete shutdown). This was unexpected because all components within the gyro were supposedly radiation tolerant. Further testing showed that the components responsible for the failure were two DC-DC converters, manufactured by Interpoint, that stopped regulating shortly before shutdown. This paper summarizes diagnostic test results for the converters to determine the underlying cause of the unexpected failure at low levels of radiation.

Interpoint Rad-hard DC-DC power converter TC4426 M↗

NASA NTRS2001

Performance of Rad Hard quad receivers at extreme temperatures

We characterize the electrical performance and reliabilities as potential space electronic parts under extreme low and high temperature environments extending nominal device specifications.

Rad-Hard Quad Receivers electrical performance↗