Analog/Mixed Signal

Space-qualified, COTS-based radiation hardened power converters

24 February 2021

Microchip Technology Inc. has introduced an expansion of its SA50-120 power converter family with nine units based on commercial off-the-shelf (COTS) technology for spaceflight system design and production.

The SA50-120 family is qualified for Mil-Std-461, Mil-Std-883 and Mil-Std-202 for engineers to start with COTS technology. Source: MicrochipThe SA50-120 family is qualified for Mil-Std-461, Mil-Std-883 and Mil-Std-202 for engineers to start with COTS technology. Source: MicrochipThe technology provides developers with space-qualified power converters to help minimize risk and lower development costs. The radiation-hardened DC to DC power converters use surface mount component construction for flexibility and customization to fit specific applications and requirements.

The SA50-120 family is qualified for Mil-Std-461, Mil-Std-883 and Mil-Std-202 for engineers to start with COTS technology and scale quickly to development, reducing risk and time, Microchip said.

The power converters use 120 V input and offer up to 56 W of output and are EMI compliant and radiation-hardened with single and triple outputs, and use switch regulators that use peak current mode controlled single-ended forward converter topology with inherent single-event immunity.

The devices offer eight million houses mean time between failure (MTBF) and up to 87% efficiency as well as qualified to 100 krad (Si) total ionization dose (TID) and single event effects (SEE) greater than 80 MeV cm2/mg.

To contact the author of this article, email engineering360editors@globalspec.com


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