SLVK117 October   2022 TPS7H2221-SEP

 

  1.   Single-Event Effects Test Report of the TPS7H2221-SEP Load Switch
  2.   Trademarks
  3. 1 Introduction
  4. 2 Single-Event Effects (SEE)
  5. 3 Device and Test Board Information
  6. 4 Irradiation Facility and Setup
  7. 5 Depth, Range and LETEFF Calculation
  8. 6 Test Setup and Procedures
  9. 7 Destructive Single-Event Effects (DSEE)
    1. 7.1 Single-Event Latch-up (SEL) Results
    2. 7.2 Single-Event Burnout (SEB) and Single-Event Gate Rupture (SEGR) Results
  10. 8 Single-Event Transients (SET) and Single Event Functional Interrupt (SEFI)
    1. 8.1 Single Event Transient (SET)
    2. 8.2 Single Event Functional Interrupt (SEFI)
  11. 9 Event Rate Calculations
  12. 10Summary
  13.   A Appendix: Total Ionizing Dose from SEE Experiments
  14.   B Appendix: References

9 Event Rate Calculations

Event rates were calculated for LEO(ISS) and GEO environments by combining CREME96 orbital integral flux estimations and simplified SEE cross-sections according to methods described in Heavy Ion Orbital Environment Single-Event Effects Estimations application report. We assume a minimum shielding configuration of 100 mils (2.54 mm) of aluminum, and “worst-week” solar activity (this is similar to a 99% upper bound for the environment). Using the 95% upper-bounds for the SEL and the SEB/SEGR, the event rate calculation for the SEL and the SEB/SEGR is shown on Table 9-1 and Table 9-2, respectively. It is important to note that this number is for reference since no SEL or SEB/SEGR events were observed.

Table 9-1 SEL Event Rate Calculations for Worst-Week LEO and GEO Orbits
Orbit TypeOnset LETEFF (MeV-cm2/mg)CREME96 Integral FLUX (/day/cm2)σSAT (cm2)Event Rate (/day)Event Rate (FIT)MTBE (Years)
LEO (ISS)42.76.305 × 10–41.197 × 10–77.503 × 10–113.126 × 10–33.651 × 107
GEO2.136 × 10–32.542 × 10–101.059 × 10–21.078 × 107

LEO (ISS)

46.8

4.868 × 10–4

1.844 × 10–7

8.977 × 10–11

3.740 × 10–3

3.052 × 107

GEO

1.604 × 10–3

2.957 × 10–10

1.232 × 10–2

9.264 × 106

Table 9-2 SEB/SEGR Event Rate Calculations for Worst-Week LEO and GEO Orbits
Orbit TypeOnset LETEFF (MeV-cm2/mg)CREME96 Integral FLUX (/day/cm2)σSAT (cm2)Event Rate (/day)Event Rate (FIT)MTBE (Years)
LEO (ISS)42.76.305 × 10–46.15 × 10–83.878 × 10–111.616 × 10–37.065 × 107
GEO2.136 × 10–31.313 × 10–105.473 × 10–32.086 × 107

LEO (ISS)

46.8

4.868 × 10–4

9.24 × 10–8

4.498 × 10–111.874 × 10–36.091 × 107

GEO

1.604 × 10–31.482 × 10–106.175 × 10–31.849 × 107