SLUUCC9A September   2020  – September 2022 UCC28C40-Q1 , UCC28C41-Q1 , UCC28C42-Q1 , UCC28C43-Q1 , UCC28C44-Q1 , UCC28C45-Q1

 

  1. 1Overview
  2. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 SOIC (8) Package
  3. 3Failure Mode Distribution (FMD)
  4. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 SOIC (8) Package
  5. 5Revision History

3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for UCC28C4x-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