SFFS958 July 2024 TPS62914-Q1 , TPS62916-Q1 , TPS62918-Q1
This section provides functional safety failure in time (FIT) rates for the TPS6291x-Q1 based on two different industry-wide used reliability standards:
| FIT IEC TR 62380 / ISO 26262 | FIT (Failures Per 109 Hours) | ||
|---|---|---|---|
| Power Dissipation | 0.5W | 1.0W | 1.5W |
| Total component FIT rate | 12 | 26 | 59 |
| Die FIT rate | 8 | 22 | 55 |
| Package FIT rate | 4 | 4 | 4 |
The failure rate and mission profile information in Table 2-1 comes from the Reliability data handbook IEC TR 62380 / ISO 26262 part 11:
| Table | Category | Reference FIT Rate | Reference Virtual Tj |
|---|---|---|---|
| 5 | CMOS, BICMOS Digital, analog, or mixed | 25 FIT | 55°C |
The reference FIT rate and reference virtual Tj (junction temperature) in Table 2-2 come from the Siemens Norm SN 29500-2 tables 1 through 5. Failure rates under operating conditions are calculated from the reference failure rate and virtual junction temperature using conversion information in SN 29500-2 section 4.