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
docs/sourcing.md+1−1@@ -75,6 +75,6 @@ Before the official Abracon STEP turned up, the inductor had been drawn from dat ### Part marking (laser etch) -U1, C1, C2 and C3 carry their MPN as a flat laser-etch mark on the top face, made with `adom-aiflow-etch` (adom-aiflow 0.1.43) and the adom-chip-laser service. The mark is a zero-thickness face, so it adds few triangles, and the vendor colours are kept. It runs along the part's long axis (U1, C2, C3) or, on C1, along the silver field of the can so it stays off the black polarity stripe. L1's Abracon model already carries its printed AMPLH5030S marking, so it was not etched again. The unetched originals are kept in the run folder, and [clip 6](docs/clips-rework.md#clip-6) shows the board before and after.+U1, C1, C2 and C3 carry their MPN as a flat laser-etch mark on the top face, made with `adom-aiflow-etch` (adom-aiflow 0.1.43) and the adom-chip-laser service. The mark is a zero-thickness face, so it adds few triangles, and the vendor colours are kept. It runs along the part's long axis (U1, C2, C3) or, on C1, along the silver field of the can so it stays off the black polarity stripe. L1's Abracon model already carries its printed AMPLH5030S marking, so it was not etched again. [Clip 6](docs/clips-rework.md#clip-6) shows the board before and after. The electrolytic's case size had first been written into the BOM from memory. Looking for the model forced a check against the Panasonic page (6.3 x 5.8 mm, code D). Package dimensions in the BOM now always cite where they came from.