28V input 50W radiation resistant option
Reduce system size, cost, and development time

A non-hybrid power converter has been launched that offers greater design flexibility and reduces system size, cost, and development time compared to existing hybrid converters.

Microchip Technology Inc. today announced the availability of a family of space-grade DC-DC power converters with a 28-V input, 50-W radiation-tolerant option.

Microchip's SA50-28 family of products is the industry's only off-the-shelf 28 V input radiation-tolerant power converter based on discrete components in a surface-mount construction and non-hybrid assembly process.

A single SA50-28 device offers more features than off-the-shelf space-grade power converters, while customizing parameters eliminates the volume, weight and complexity of hybrid solutions involving multiple devices and peripheral circuitry.

Microchip's comprehensive SA50-28 family of 50-W products spans 20V to 40V inputs and is available in nine standard outputs of 3.3V, 5V, 12V, 15V and 28V in single and triple output configurations.

The device can meet the demanding power requirements of systems in a shorter time and with minimal additional cost compared to hybrid power converter products.
> Other features include: △high efficiency △low output noise △output suppression control △overcurrent protection and external synchronization △linear output derating to +125°C △full rated power operation over a -55°C to +85°C temperature range.

The SA50-28 family is part of Microchip's growing family of standard, non-hybrid space-grade power converters.

This allows developers to use commercial off-the-shelf components with spaceflight-proven circuitry.

This product is part of the radiation-hardened SA50-120 power converter family launched in February 2021.

It also reduces the risk and development time of certified space systems by allowing developers to begin development with a ceramic or plastic package based on proven Commercial Off-the-Shelf (COTS) technology and rapidly scale development later with a lower level of screening than traditional Qualified Manufacturers List (QML) requirements.

Microchip's radiation-hardened SA50-28 family of devices is available now in production quantities and limited sampling.

Prototype grade units are available from stock, while non-radiation tolerant engineering units are available at a lower cost with the same performance as the space grade units.