SLVAEL7A December   2019  – August 2024 TPS7B7701-Q1 , TPS7B7702-Q1

 

  1.   1
  2.   Trademarks
  3. 1Overview
  4. 2Functional Safety Failure In Time (FIT) Rates
    1. 2.1 Single-Channel FIT Rate
    2. 2.2 Dual-Channel Package FIT Rate
  5. 3Failure Mode Distribution (FMD)
  6. 4Pin Failure Mode Analysis (Pin FMA)
    1. 4.1 Single-Channel Package
    2. 4.2 Dual-Channel Package
  7. 5Revision History

2.1 Single-Channel FIT Rate

Table 2-1 Component Failure Rates per IEC TR 62380 / ISO 26262 Part 11
FIT IEC TR 62380 / ISO 26262 FIT (Failures Per 109 Hours)
Total component FIT rate 17
Die FIT rate 7
Package FIT rate 10

The failure rate and mission profile information in Table 2-3comes from the reliability data handbook IEC TR 62380 / ISO 26262 part 11:

  • Mission profile: Motor control from table 11
  • Power dissipation: 750mW
  • Climate type: World-wide table 8
  • Package factor (lambda 3): Table 17b
  • Substrate material: FR4
  • EOS FIT rate assumed: 0 FIT
Table 2-2 Component Failure Rates per Siemens Norm SN 29500-2
Table Category Reference FIT Rate Reference Virtual TJ
5 CMOS/BICMOS ASICs Analog & Mixed ≤ 50V supply 25 FIT 55°C

The reference FIT rate and reference virtual TJ (junction temperature) in Table 2-3 come from the Siemens Norm SN 29500-2 tables 1 through 5. Failure rates under operating conditions are calculated from the reference failure rate and virtual junction temperature using conversion information in SN 29500-2 section 4.