3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for UCC28C5x-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.

Table 3-1 Die Failure Modes and Distribution

Die Failure Modes	Failure Mode Distribution (%)
OUT stuck low	34
OUT pulse width not as expected	19
OUT stuck high	14
System is unstable	11
No effect	22