Texas Instruments | TPS6216x-Q1 FIT Rate, Failure Mode Distribution | Application notes | Texas Instruments TPS6216x-Q1 FIT Rate, Failure Mode Distribution Application notes

Texas Instruments TPS6216x-Q1 FIT Rate, Failure Mode Distribution Application notes
TPS6216x-Q1 FIT Rate, Failure
Mode Distribution
3-V to17-V 1-A Step-Down Converters with DCS-Control™
Failure Rate Mission Profile (1)
Per 10^9 Hours (FIT)
Total FIT Rate
9
Die FIT Rate
Package FIT Rate
7
2
Failure Modes
Failure Mode Distribution (%)
SW no output
SW output not in specification – voltage or timing
SW power HS or LS FET stuck on
PG false trip, fails to trip
Short circuit any two pins
Texas Instruments
TI Information – Selective Disclosure
35%
45%
10%
5%
5%
Page 1
(1)Failure Rate, Mission Profile and Failure Mode Distribution
The failure rate and mission profile information comes from the Reliability data handbook IEC TR 62380 using the
reliability modeling for Integrated circuits.
Mission Profile Automotive Control IEC TR 62380
Power dissipation 400mW
Climate type: World-wide Table 8 IEC TR 62380
Package factor lambda 3 Table 17b IEC TR 62380
Substrate Material: FR4
EOS FIT rate assumed = 0
The failure mode distribution estimation 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 rates listed reflect random failure events and do not include
failures due to misuse or over stress.
TPS6216x-Q1 are catalog product and not compliant to ISO-26262 standards.
Texas Instruments
TI Information – Selective Disclosure
Page 2
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