The Microchip SA50-28 series adds a 28 volt input radiation resistance option

Space system designers cannot easily leverage traditional hybrid power converters to support non-standard voltages or add functionality. By offering a family of discrete component-based aerospace-grade DC-DC power converters, Microchip Technology eliminates the cost, complexity, and customization challenges of such hybrid solutions. Recently, Microchip announced that the family of devices has now added a 28V input, 50 watt (W) radiation resistance option.

This hybrid converter replacement increases design flexibility while reducing system volume, cost, and development time

Leon Gross, Vice President of Microchip's Discrete Products Business Unit, said: "Our latest 28V input SA50-28 product greatly simplifies and accelerates system development. They are easier to customize than other aerospace-grade power converters and therefore can meet specific voltage, current, and other needs. Customers gain flexibility while reducing the volume, cost and complexity of space system designs. ”

Microchip's SA50-28 series is currently the industry's only off-the-shelf 28V input, radiation-resistant power converter. The product is based on discrete components, using surface mount construction and non-hybrid assembly processes. The SA50-28 devices with customized parameters offer more functionality than other off-the-shelf aerospace-grade power converters, eliminating the volume, weight, and complexity of multiple devices and surrounding circuitry that arise from using hybrid solutions.

Microchip's complete SA50-28 product family has input voltages from 20V to 40V and power of 50W and features nine standard outputs of 3.3V, 5V, 12V, 15V, and 28V in single-output and triple-output configurations. Compared to hybrid power converter products, the devices can be customized to the system's stringent power requirements in a relatively short period of time and at a lower additional cost. Other features include high efficiency, low output noise, output rejection control, overcurrent protection, external synchronization, and fully fixed power operation from -55°C to +85°C, linear derating, and extendable operating temperature to +125°C.

The SA50-28 series is one of Microchip's growing standard non-hybrid aerospace-grade power converter products. These converters have proven circuits in the aerospace industry and can be used by aerospace application designers as commercial off-the-shelf components. These products also belong to the radiative SA50-120 power converter family, which was launched in February 2021, which helps designers quickly scale up development with a lower screening level than traditional Qualified Manufacturers List (QML) required, starting with proven commercial off-the-shelf technology in ceramic or plastic packages, thereby reducing the risk and development time of qualified space systems.

Supply

The Microchip radiation-resistant SA50-28 series is already available for mass production with a limited number of samples. Prototype-grade units are available from stock, and non-radiation-resistant engineering units are available, with the same performance as aerospace-grade units, but at a lower cost. Since there is no associated batch loss, delivery times are usually faster than mixed structural units. In addition to this family of devices, Microchip also supplies the FPGA family, high reliability radiation-resistant power semiconductors, and aerospace-grade timing devices.

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