Solve one tolerance corner

Scope: solve. Synchronous; unmetered on Pro and Team, and one of the month's 10 solves on Free (meta.solvesRemaining). Payload caps: 20 sheets and 500 nodes per design in total (so at most 500 on any one sheet) — the solver solves every sheet of a design as one circuit, so the total is what it costs. A converter reports two efficiencies and they are meant to differ. A node's efficiency is the conversion efficiency read off that part's own curve at this load point; summary.stages[].eff is the whole stage, Pout / Pin, which also pays the quiescent current. A 12 V → 5 V buck at 1 A reads 0.920 on the node and 0.910 on the stage — the 0.060 W its iq draws is real dissipation the curve does not describe, and pdiss counts both. Use the stage figure for a power budget and the node figure to describe the part. An SMPS node also carries efficiencyCurve, the curve the solver used as [outputCurrent, efficiency] pairs over 0..iMax at the solved input and rail (light-load mode and effVin applied); the compact result leaves it out.