Google Antigravity

@@ -129,3 +129,9 @@ Argon applied its own review in a new aiflow run: the circuit is proven before a ::adom-video{src="/adom/antigravity/render/first-ai-pcb/videos/clip14.video.json"}  Argon read Samsung's measured DC-bias curves: the 22 µF / 10 V output capacitors keep only 29 % at 5 V (6.4 µF each), so it added a fourth (25.6 µF effective) and cut the feedforward capacitor from 68 to 47 pF, keeping the loop crossover at 36 kHz, under TI's 40 kHz limit with 94° of phase margin. The inductor question was resolved from TI's own guidance: 15 µH is TI's recommended value for 5 V out on this part. A damped 47 µF / 35 V electrolytic now sits on the input: in simulation, a 16 V hot-plug through 1 µH of leads that rang to 31.2 V without it peaks at 17.4 V. Start-up takes 4.6 ms and a 0.5 to 1 A load step dips 83 mV (limit 150 mV), matching TI's reference model within about 10 %. Length 32 s.++## Clip 15: rev 2 placed and routed, live in KiCad++::adom-video{src="/adom/antigravity/render/first-ai-pcb/videos/clip15.video.json"}++Argon placed the parts one at a time through kicad-bridge. The bootstrap capacitor C4 now sits beside the regulator (rev 1 ran its return 14.7 mm across the switch node), and the 47 µF electrolytic C10 guards the input next to the VIN contact. aiflow's router closed every connection in five passes, the design-rule gate passed with no new errors and nothing unconnected, and Argon landed all 50 traces in KiCad, one undo step each. The switch-node length budget stays at the original 12 mm. Length 31 s.

@@ -0,0 +1,6 @@+{+  "video": "/adom/antigravity/render/first-ai-pcb/videos/clip15.mp4",+  "title": "Rev 2 placed and routed live in KiCad",+  "poster": "/adom/antigravity/render/first-ai-pcb/videos/clip15.jpg",+  "captions": "WEBVTT\n\n00:00:00.500 --> 00:00:02.898\nThen the board, live in KiCad.\n\n00:00:02.948 --> 00:00:06.978\nArgon placed the parts one at a time through kicad-bridge.\n\n00:00:07.028 --> 00:00:14.729\nThis time the bootstrap capacitor sits right beside the regulator, and the new forty-seven microfarad electrolytic guards the input.\n\n00:00:14.779 --> 00:00:24.928\naiflow's router closed every connection in five passes, the design-rule gate passed clean, and Argon landed all fifty traces in KiCad, one undo step each.\n\n00:00:24.978 --> 00:00:28.600\nThe switch-node budget stays at the original twelve millimeters.\n"+}\ No newline at end of file