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Tomco USA · Technical Papers

Whitepapers.

Peer-style technical papers authored by AFSP-credentialed engineers from active safety programs. Distinct from field notes: numbered sections, figures, tables, and references.

TW-2025-001Vol. 1, No. 1
Functional Safety

Systematic ASIL Decomposition in Multi-Channel E/E Architectures

ASIL decomposition allows a single high-integrity requirement to be split across two independent channels, each carrying a lower ASIL rating. This paper presents a structured methodology for applying Part 9 of ISO 26262:2018, with worked examples in brake-by-wire and EPS architectures, hardware metric verification, and dependent-failure analysis.

ASIL decompositionISO 26262functional safetyhardware safety metrics
19 pp · March 12, 2025