project
12 V to 5 V / 1 A Buck Molecule (TPS54202)
Public Unreviewedby John Lauer
An independently designed 12 V to 5 V, 1 A synchronous buck molecule (TI TPS54202), with calculations, ngspice and PSpice simulation, KiCad 10 schematic and board, and the board laid out and analysed with adom-aiflow.
← Commit history
AIFLOW-GAPS.md+6@@ -132,3 +132,9 @@ Every remaining row is closed in the binary; see docs/release-0.1.37.md on adom/ | 42 (fixed in 0.1.40) | the rework run's `report --push` rebuilt docs/clips.md from its own clips and overwrote the first run's clips page; the first run now owns docs/clips.md and later runs publish docs/clips-<run>.md with a link | aiflow (clips) | | 43 (fixed in 0.1.41 and 0.1.42) | the etch mark was 3D text (an extruded solid per glyph: 1,760 triangles on a 920-triangle SOT-23-6); it is now flat, each glyph's top face only (359 triangles, same look), and its colour is stored in the STEP (a located transform had made the writer drop it) | aiflow (etch tool) | | 44 (0.1.41) | the etch tool installed OpenCascade locally (about 1.3 GB) on first use, against the rule that STEP geometry work happens on the shared services; it now refuses unless the user agrees (`AIFLOW_ALLOW_LOCAL_OCC=1`), until adom-chip-laser keeps colours, turns the part and writes flat marks itself (adom/adom-chip-laser#2, flat mark added in a comment) | aiflow, adom-chip-laser |+| 45 (0.1.43) | the local OpenCascade the etch tool needs was the full `cadquery-ocp` (1.3 GB, mostly the VTK viewer it never uses); it now installs `cadquery-ocp-novtk` (0.4 GB), and aiflow-sourcing suggests that build for any local STEP work | aiflow (etch tool, sourcing skill) |+| 46 (fixed in 0.1.44) | the etch service lays its mark at the part's bounding-box top, so on MLCCs and chip resistors (ceramic 20 to 45 µm below the end caps) the text floated above the body; the tool now seats it on the surface under the text. The first C2/C3 etch was also dark on a dark-brown body, and C2/C3 still pointed at KiCad's stock 1206 model, so the etched STEP never reached the board | aiflow (etch tool, board flow) |+| 47 (fixed in 0.1.44) | on C1 (electrolytic) the long-axis rule ran the text across the black polarity stripe; `--along x|y` turns it onto the silver field. L1's vendor model already prints its part number and would have been etched twice; the flow now leaves vendor markings alone | aiflow (etch tool, board flow) |+| 48 (fixed in 0.1.45) | LEDs had no MPN mark, and a top mark would cover the window; `--face side` puts it on a long side face (`--side-band low` when a see-through window runs the full length, like the WS2812B-2020). LED models now carry their lens colour from the datasheet's dominant wavelength, softened, as the default STEP on the Adom basic-part pages | aiflow (etch tool), adom-basic-parts |+| 49 | the KiCad 3D viewer on the desktop can't be filmed while another window covers it (the window capture is blank for the GL canvas), so the etch clip is built from `kicad-cli pcb render` before/after frames | adom-bridge recorder, aiflow-live-clips |+| 50 | the component pages this board depends on had real library errors that only showed up while redoing their models: the WS2812B-2020 page carried the 5050 model and the 5050 pinout (fixed), the Inolux LED STEPs are KiCad's generic models and taller than the parts, and the 0402 LED pages' `.adom-lbr.json` pads differ from their `.kicad_mod` | component pages (Adom basic parts) |