electrical.mosfet.total_loss

Three distinct suites: educational examples on the calculator page, this legacy regression count (39/39 golden + boundary), and the CVP verification suite below. They are not the same number. Property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the CVP Manifest . SKIP (0/0) means that suite has no published vectors.

This calculator CURRENT · Public schema 1.1.2 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Calculation version 1.1.2. CVP 1.0.0-proposed. 3/3 golden · 22/22 CVP boundary · 19/19 invalid · 8/8 property · 1/1 cross-interface · 18/18 CVP contract. digest e1e9664a3ef4.

• Golden (oracle-backed) 3 / 3
• CVP boundary 22 / 22
• Invalid input 19 / 19
• Property 8 / 8
• Cross-interface 1 / 1
• CVP contract 18 / 18
• Interfaces PASS · UI (SSR) / REST / MCP
• Interface claim ui-ssr is query-result HTML, not a live browser session.
• Assurance Engineering

• contract page version PASS
• contract capability version PASS
• contract input schema version PASS
• contract output schema version PASS
• evidence version matches manifest PASS
• schema valid input executes PASS
• engine success output validates schema PASS
• schema rejects incomplete input PASS
• temperature linear schema requires Tj_C PASS
• temperature ratio schema requires rds_ratio PASS
• share url roundtrip dc PASS
• share url roundtrip pwm PASS
• qg xor vdrive rejected PASS
• schema rejects qg without vdrive PASS
• schema rejects incomplete coss mode PASS
• device excludes gate qrr PASS
• omitted terms listed PASS
• eoss overrides coss PASS

Fingerprint sha256:63796283361c5a2cc011efc022665fc2401eee8cd2aa34530424d3f8836e4702

Input schema sha256:cd71e7633305576f0635af201a746a518b735993cc5a997b458ad543f4ed3b05 · Output schema sha256:1905f96b840a7a6cc79298022264e09a3c9031a1276ed4686145711363dbfe16 · Build-time SHA-256 digests prove published artifacts agree with each other (release_integrity.scope=workspace). Production attestation GETs canonical URLs twice (public/cached view and origin), including Capability HTML, via npm run attest:production --write (published at /.well-known/calculatorx-production-attestation.json) and fails if the public Capability page advertises a different calculation_version. This is artifact consistency, not an independent immutable release log.

Tool

mosfet-total-loss

Engine

mosfet-total-loss

Engine build

2026-09-10

Evidence core

2026-09-05T02:35:39.217Z

Rendered

2026-09-16T22:03:43.717Z

Last reviewed

2026-08-19

Assumptions

• Hard-switching linear V/I overlap.
• Conduction current_basis contract is identical to electrical.mosfet.conduction_loss.
• Coss term is lumped or Eoss-at-Vds — not a Qoss(V) integral.
• P_gate is drive-circuit power, not die dissipation.
• P_rr is commutation loss, usually not this MOSFET.
• Tj_est is steady-state RthJA of P_device only.

Limitations

• First-order hard-switching workspace — not Eon/Eoff tables, Qoss(V) curves, or compact models
• Conduction uses electrical.mosfet.conduction_loss; switching/gate use electrical.mosfet.switching_loss
• Default α = 0.006 /°C is a Si planning default, not manufacturer validated
• P_coss from ½·Coss·V²·f is a lumped equivalent — prefer datasheet Eoss at Vds
• Overlap P_sw plus P_coss may overestimate due to double counting; first-order only — validate against measured Eon/Eoff
• P_rr = Qrr·Vds·f is recovered-charge commutation loss, usually attributed to the complementary switch — not this die
• P_gate is gate-drive power (driver + Rg + Rg,int) — not MOSFET junction dissipation; Tj_est uses P_device only
• Tj_est is steady-state RthJA only — not Zth or CFD
• Numeric 0 on omitted P_gate/P_coss/P_rr means not included (see terms_omitted), not a measured zero
• Optional Qg/Coss/Eoss/Qrr if present must be > 0; explicit 0 is not yet a supported known-zero state
• Qg and Vdrive must both be present or both omitted (else NEEDS_TWO_INPUTS)