Radiation-hardened DC-DC converters for space applications like weather satellites introduced by Microchip

March 17, 2021
These surface-mount components are standard non-hybrid space-grade power converters, and are qualified to Mil-Std-461, Mil-Std-883 and Mil-Std-202.

CHANDLER, Ariz. – Microchip Technology Inc. in Chandler, Ariz., is introducing nine new members of the company's SA50-120 radiation-hardened power converter family for communications and weather satellites.

The radiation-hardened DC-DC converters are based on commercial off-the-shelf (COTS) technology that provides developers with space-qualified power converters that help to minimize risk and lower development costs.

The SA50-120 power electronics components are standard non-hybrid space-grade power converters use surface-mount component construction are qualified to Mil-Std-461, Mil-Std-883 and Mil-Std-202, and enable designers to scale-up development.

SA50-120 power converters use 120-volt inputs and offer as much as 56 Watts of output in a small low profile package. These EMI-compliant designs offer single and triple outputs.

Related: Radiation-tolerant parallel-interface SuperFlash memory for space applications introduced by Microchip

The power electronics units use switching regulators that use peak current mode controlled single-ended forward converter topology with inherent single-event immunity. They offer eight million hours mean time between failures and as much as 87 percent efficiency.

The units are qualified to resist as much as 100 kilorads of total ionization dose (TID), and single-event effects (SEE) greater than 80 MeV cm2/mg. They offer synchronization, a transitor-transistor logic (TTL) on/off command signal, and single-output versions offer remote sense, output voltage adjust, and parallel connection functions.

For more information contact Microchip Technology online at www.microchip.com.

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