DESCRIPTION
The POLs are class K qualified per MIL-PRF-38534. These products are designed to operate continuously on board a space craft up to the rated power output without power de-rating for case temperature of 85°C.The POLs are suitable for harsh radiation environments normally encountered in the geo-synchronous orbit (GEO), medium earth orbit (MEO), low earth orbit (LEO), deep space, and for other challenging radiation design applications. The SBB POL is a non isolated synchronous buck regulator. It incorporates IR HiRel’s heritage-rich components and circuit design library for long term reliability expected of system designs with a mission life of up to 18 years or more. The SBB Series of POLs operate from a DC input power source with the voltage range of 4.5V to 5.5V. It converts DC input voltage down to a fixed and highly stable DC output. The standard voltage outputs are 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The output is adjustable with the addition of an external resistor. The output adjustment range is approximately ±10% of a nominal output voltage.
International Rectifier
