SNVA937A January 2020 – July 2020 TPS2556-Q1 , TPS2557-Q1
The failure mode distribution estimation for TPS2556-Q1 and TPS2557-Q1 in Table 3-1 comes from the combination of common failure modes listed in standards such as IEC 61508 and ISO 26262, the ratio of sub-circuit function size and complexity and from best engineering judgment.
The failure modes listed in this section reflect random failure events and do not include failures due to misuse or overstress.
| Die Failure Modes | Failure Mode Distribution (%) |
|---|---|
| OUT no output | 45% |
| OUT output not in specification | 40% |
| OUT power FET stuck on | 5% |
| FAULT false trip or fails to trip | 5% |
| Short circuit any two pins | 5% |