Power Electronics — question 7 of 10
Write a real answer. It is graded against the question's rubric, and the mastery movement is computed by the same engine the product uses. Scoring here is deterministic rather than model-written, so this page costs nothing to run and nothing is saved. In a track built from your own posting, the same rubric is graded by the model, which is what produces feedback about your reasoning rather than about coverage.
No heatsink is assumed unless you argue one is needed.
An LDO drops 12V to 5V while supplying 1A continuously. First, calculate the power it dissipates. Then, given a package thermal resistance junction-to-ambient of 50°C/W and an ambient of 45°C, reason about whether this is a workable design, and what you'd change if not.
This one resolves to a number. Give the value in the field below and your reasoning in the box — the number is checked exactly, by arithmetic.