ST's new rad-hard point-of-load (PoL) converter extends our portfolio of power management ICs for aerospace applications to switching regulators. Specified at 7 A maximum current with dual and quad current sharing capabilities and a minimum output voltage as low as 0.8 V and a frequency up to 1MHz, it is ideally suited for the supply of the most demanding FPGAs, MPUs, DSPs and ASICs.

The RHRPMPOL01 is a single-phase, step-down monolithic switching regulator with high-precision internal voltage reference and integrated power MOSFETs for synchronous conversion. It includes all features of a state-of-the-art-commercial DC/DC switching regulator such as soft start and Power Good pin as well as protection against over current, under voltage, and over temperature conditions.

Specifically designed for radiation hardness using a mix of radiation by design and a basic rad-hard library in 0.32µm BCD6s SOI technology, it is SEL (Single Event Latch-up) and SES (Single Event Snapback) free up to 70 MeV.cm²/mg. It is housed in a ceramic hermetic Flat-28P package specifically design to reach a 0.8 °C/W Rth, ensuring excellent power dissipation. An evaluation board is also available to help developers with their design.