12 V to 5 V / 1 A Buck Molecule (TPS54202)

@@ -22,7 +22,7 @@ Last updated 2026-09-29 17:04 UTC. 9 clip(s).  Recorded 2026-09-29 14:13 UTC. 31 View-menu commands, no mouse: the bottom identity silkscreen, tilted and close views with the contact and probe labels, the side view with the medium machine pins under the board, and the top view. -<video src="docs/clips/window-3933648-20260929-141309-10x.mp4" controls muted playsinline></video>+<video src="docs/clips/window-3933648-20260929-141309-10x.mp4" poster="docs/clips/window-3933648-20260929-141309-poster.jpg" controls muted playsinline preload="metadata"></video>  Motion-only action cut: [docs/clips/window-3933648-20260929-141309-action.mp4](clips/window-3933648-20260929-141309-action.mp4) @@ -36,7 +36,7 @@ Raw recording: `window-3933648-20260929-141309.mp4`, 52 MB, kept with the run (n  Recorded 2026-09-29 02:34 UTC. The 24 parts parked in a row below the outline land on the molecule one at a time, each its own KiCad undo step; the first traces appear at the end. -<video src="docs/clips/window-461694-20260929-023413-10x.mp4" controls muted playsinline></video>+<video src="docs/clips/window-461694-20260929-023413-10x.mp4" poster="docs/clips/window-461694-20260929-023413-poster.jpg" controls muted playsinline preload="metadata"></video>  Motion-only action cut: [docs/clips/window-461694-20260929-023413-action.mp4](clips/window-461694-20260929-023413-action.mp4) @@ -52,7 +52,7 @@ Recorded 2026-09-29 02:57 UTC. The 48 routed traces on the board, then the first  > Note: aiflow flagged it blank; that is a false positive: the check samples the middle of the window and the board sits left of centre at this zoom (the sheet shows real footage). -<video src="docs/clips/window-461694-20260929-025743-10x.mp4" controls muted playsinline></video>+<video src="docs/clips/window-461694-20260929-025743-10x.mp4" poster="docs/clips/window-461694-20260929-025743-poster.jpg" controls muted playsinline preload="metadata"></video>  Motion-only action cut: [docs/clips/window-461694-20260929-025743-action.mp4](clips/window-461694-20260929-025743-action.mp4) @@ -66,7 +66,7 @@ Raw recording: `window-461694-20260929-025743.mp4`, 1110 MB, kept with the run (  Recorded 2026-09-29 12:52 UTC. The Fields app walks the solved board: heat flow in each copper layer in 3D with the vias, the bottom ground plane, temperature in still air (+44 C at U1) and moving air (+24 C), and current density. 0 issues against the 55 C budget. -<video src="docs/clips/window-4852048-20260929-125229-10x.mp4" controls muted playsinline></video>+<video src="docs/clips/window-4852048-20260929-125229-10x.mp4" poster="docs/clips/window-4852048-20260929-125229-poster.jpg" controls muted playsinline preload="metadata"></video>  Motion-only action cut: [docs/clips/window-4852048-20260929-125229-action.mp4](clips/window-4852048-20260929-125229-action.mp4) @@ -80,7 +80,7 @@ Raw recording: `window-4852048-20260929-125229.mp4`, 181 MB, kept with the run (  Recorded 2026-09-29 11:56 UTC. FB and VOUT come off the bottom layer under the input hot loop; the feedback column (R1, R2, C9) is turned 180 degrees so it reads VOUT, R1, FBM, R2, FB; the LED moves beside the output; the VOUT sense re-routes along the top edge. -<video src="docs/clips/window-593052-20260929-115650-10x.mp4" controls muted playsinline></video>+<video src="docs/clips/window-593052-20260929-115650-10x.mp4" poster="docs/clips/window-593052-20260929-115650-poster.jpg" controls muted playsinline preload="metadata"></video>  Motion-only action cut: [docs/clips/window-593052-20260929-115650-action.mp4](clips/window-593052-20260929-115650-action.mp4) @@ -94,7 +94,7 @@ Raw recording: `window-593052-20260929-115650.mp4`, 463 MB, kept with the run (n  Recorded 2026-09-29 12:11 UTC. SW patch from U1 to the inductor, solid ground at U1's GND pin with thermal vias, the stray SW vias and corridor GND vias removed, every zone refilled. -<video src="docs/clips/window-593052-20260929-121139-10x.mp4" controls muted playsinline></video>+<video src="docs/clips/window-593052-20260929-121139-10x.mp4" poster="docs/clips/window-593052-20260929-121139-poster.jpg" controls muted playsinline preload="metadata"></video>  Motion-only action cut: [docs/clips/window-593052-20260929-121139-action.mp4](clips/window-593052-20260929-121139-action.mp4) @@ -108,7 +108,7 @@ Raw recording: `window-593052-20260929-121139.mp4`, 87 MB, kept with the run (no  Recorded 2026-09-29 12:43 UTC. The board while the current and thermal gates ran; the SW patch opened right after U1's SW pin and the pours were re-landed (peak current density 215 to 50 A/mm2 over the rework). -<video src="docs/clips/window-593052-20260929-124348-10x.mp4" controls muted playsinline></video>+<video src="docs/clips/window-593052-20260929-124348-10x.mp4" poster="docs/clips/window-593052-20260929-124348-poster.jpg" controls muted playsinline preload="metadata"></video>  Motion-only action cut: [docs/clips/window-593052-20260929-124348-action.mp4](clips/window-593052-20260929-124348-action.mp4) @@ -122,7 +122,7 @@ Raw recording: `window-593052-20260929-124348.mp4`, 344 MB, kept with the run (n  Recorded 2026-09-29 12:57 UTC. Each key net selected as a whole in KiCad (pours, tracks, vias and pads together) and framed with Zoom to Selection: GND (137 items), the SW patch from U1 to the inductor (33), VIN (40), VOUT (56). -<video src="docs/clips/window-593052-20260929-125701-10x.mp4" controls muted playsinline></video>+<video src="docs/clips/window-593052-20260929-125701-10x.mp4" poster="docs/clips/window-593052-20260929-125701-poster.jpg" controls muted playsinline preload="metadata"></video>  Motion-only action cut: [docs/clips/window-593052-20260929-125701-action.mp4](clips/window-593052-20260929-125701-action.mp4) @@ -138,7 +138,7 @@ Recorded 2026-09-29 14:12 UTC. Contact functions landing on both faces beside ev  > Note: stopped by aiflow's clip guard after 43 min (budget 10 min); no 10x cut or contact sheet was made, the raw recording is kept with the run -<video src="docs/clips/window-724124-20260929-141234-10x.mp4" controls muted playsinline></video>+<video src="docs/clips/window-724124-20260929-141234-10x.mp4" poster="docs/clips/window-724124-20260929-141234-poster.jpg" controls muted playsinline preload="metadata"></video>  Motion-only action cut: [docs/clips/window-724124-20260929-141234-action.mp4](clips/window-724124-20260929-141234-action.mp4)