SFFS791 February   2024 TXU0101-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 SC70 Package
    2. 2.2 SON Package
    3. 2.3 SC70 and SON Packages
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)

3 Failure Mode Distribution (FMD)

The failure mode distribution estimation for TXU0101-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 ModesFailure Mode Distribution (%)
Driver HIZ no output 35%
Functional fail (voltage, timing, out of specification) 24%
Driver stuck at fault high 11%
Driver stuck at fault low 13%
Driver stuck at undetermined state17%