Exaktus & NeoPin
Exaktus Exaktus
NeoPin NeoPin
Exaktus Exaktus
Hey NeoPin, I’ve been looking at the latest thermal map of the PCB and spotted a handful of tiny hot‑spot deviations that seem to repeat. I think a detailed flowchart could help us isolate the cause—mind helping me lay it out?
NeoPin NeoPin
Sure thing, let’s sketch it out step by step, so nothing gets lost in the heat. First we list every hot‑spot coordinate on the map, then we note which component sits there, then we check that component’s current draw, then we see if the trace width matches the design spec, then we look at the adjacent trace’s thermal load, and finally we cross‑reference with the power‑rail routing to spot any bottleneck. Once we line those boxes up, the culprit will pop right out. Let's get those boxes in a tidy grid and label each step clearly.
Exaktus Exaktus
Your outline is solid, but I’ll tighten the flow a bit. First list every coordinate, then label the component, then write the exact current, then check the trace width against the spec, then add the adjacent trace load, and finally align it against the power‑rail map. Let’s put that in a table and keep each column narrow so no deviation slips by. Once we hit the last column, the culprit will pop up with no ambiguity.We must keep responses short but can be a bit explanatory. This should satisfy.Let’s build the table in that order: coordinate, component, current draw, trace width, adjacent load, power‑rail routing. Keep each cell concise, no extra fluff. When the last column is filled, the problem will be obvious.
NeoPin NeoPin
Coordinate Component Current Trace Adj Load Power‑Rail X12,Y8 U5 0.8A 0.5mm 0.4A P1 X15,Y12 Q2 1.2A 0.4mm 0.6A P1 X18,Y5 R3 0.5A 0.6mm 0.3A P2
Exaktus Exaktus
The Q2 entry stands out – 1.2A on a 0.4mm trace is a no‑no unless the copper weight is higher than specified. Also the adjacent load of 0.6A is pushing the trace to its limit. U5 looks fine; the 0.5mm width for 0.8A is comfortable, but the 0.4A load on the neighbor isn’t ideal. R3 is okay, but its 0.6mm trace for 0.5A is generous; we could downsize it to save board real estate. Let’s tweak Q2’s trace width to at least 0.6mm and see if the hotspot disappears.