10 Summary

The purpose of this study was to characterize the effect of heavy-ion irradiation on the single-event effect (SEE) performance of the TPS7H1121-SEP low-dropout (LDO) linear regulator. Heavy-ions with LET_EFF = 48 MeV·cm²/mg were used for the SEE characterization campaign. Flux of 8.78 x 10⁴ to 1.60 x 10⁵ ions/cm²/s and fluences of ≈10⁷ ions/cm² per run were used for the characterization. The SEE results demonstrated that the TPS7H1121-SEP is free of destructive SEL and SEB/SEGR and SET/SEFI up to LET_EFF = 48 MeV·cm²/mg across the full electrical specifications. CREME96-based worstweek event-rate calculations for LEO (ISS) and GEO orbits for the DSEE and SET are presented for reference.