Microchip Technology has expanded its lineup of space-grade electronics with the launch of the SA15-28, a compact, 15W radiation-hardened DC-DC power converter designed for demanding space environments. Paired with the SF100-28 EMI filter, the new system meets MIL-STD-461 standards for satellite power applications and is engineered for reliability and efficiency.
The SA15-28 operates from a 28V satellite bus and delivers three independent 5V outputs, ideal for powering components like FPGAs and microprocessors via LDO regulators and point-of-load converters. It features a lightweight, non-hybrid design—just 60 grams and 1.68 cubic inches—making it well-suited for space-constrained, low-SWaP systems. Custom voltage output configurations are also available upon request.
Built using a flyback topology and running at 350 kHz, the converter is optimized for efficiency with fewer components and smaller magnetics. It incorporates Microchip’s own radiation-hardened components, including rad-hard MOSFETs and circuit-level radiation mitigation measures, such as design techniques to guard against SEU/SEL issues.
The accompanying SF100-28 EMI filter reduces electromagnetic interference and supports multiple converters up to 100W. It is compatible with existing Microchip solutions like the SA50 converters and SF200 filters, offering flexibility for system designers.
The SA15-28 is ready for use in space missions, offering a wide operating temperature range (−55°C to +125°C) and radiation tolerance up to 100 krad TID. Its availability as an off-the-shelf solution enables quicker development cycles and seamless progression from COTS to space-qualified systems, with options for ceramic or plastic packaging compliant with NASA’s EEE-INST-002 level 1 reliability standards.
