SFFSAU5 March   2026 UCC27624V-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 D and DDA Package
    2. 2.2 DGN and DGK Package
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
  7. 5Revision History

Failure Mode Distribution (FMD)

The failure mode distribution estimation for the UCC27624V-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 resulting from misuse or overstress.

Table 3-1 Die Failure Modes and Distribution
Die Failure ModesFailure Mode Distribution (%)
OUTA stuck low8
OUTB stuck low8
OUTA stuck high8
OUTB stuck high8
OUTA unknown8
OUTB unknown8
UVLO stuck low2
UVLO stuck high2
UVLO unknown2
ENA stuck high1
ENA stuck low1
ENA unknown1
Others, no impact43