HW Interview
SD-02 · Chapter 12 · System Design (Open-Ended)

Multirail power telemetry

Design power telemetry for a board with many rails. Energy readings must be accurate, and short current spikes must also be caught. State your assumptions (for example about a dozen rails from below 1 V to 12 V, 1% energy accuracy, 100 µs spikes).

Level●●● onsite design / senior
TrackSenior system
Really testingBandwidth, accuracy budget, timing.
Full worked answer: in the book, page 286 — what to say first, how to explain it, the numbers worth quoting and the follow-ups. About the book →

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