Google Antigravity

{
  "video": "/adom/antigravity/render/first-ai-pcb/videos/argon-rev2-ai-pcb.mp4",
  "title": "Gemini 4 Argon designs a PCB, revision 2",
  "poster": "/adom/antigravity/render/first-ai-pcb/videos/argon-rev2-ai-pcb.jpg",
  "captions": "WEBVTT\n\n00:00:05.513 --> 00:00:06.206\nRevision two.\n\n00:00:06.256 --> 00:00:13.269\nAsked for its own design review, Argon found its first board was missing input damping and had optimistic capacitors.\n\n00:00:13.319 --> 00:00:17.730\nHere it fixes them, proving the circuit before it builds the board.\n\n00:00:18.980 --> 00:00:21.256\nRevision two starts with the circuit.\n\n00:00:21.306 --> 00:00:34.821\nArgon read Samsung's measured DC-bias curves: its output capacitors keep only twenty-nine percent at five volts, so it added a fourth and cut the feedforward capacitor to hold the loop under TI's forty kilohertz limit.\n\n00:00:34.871 --> 00:00:38.697\nOn the input it added a damped forty-seven microfarad electrolytic.\n\n00:00:38.747 --> 00:00:48.387\nIn simulation, a sixteen volt hot-plug that rang to thirty-one volts now settles at seventeen, and start-up and the load step stay inside their limits.\n\n00:00:48.437 --> 00:00:49.550\nThen the board.\n\n00:00:51.113 --> 00:00:53.511\nThen the board, live in KiCad.\n\n00:00:53.561 --> 00:00:57.591\nArgon placed the parts one at a time through kicad-bridge.\n\n00:00:57.641 --> 00:01:05.342\nThis time the bootstrap capacitor sits right beside the regulator, and the new forty-seven microfarad electrolytic guards the input.\n\n00:01:05.392 --> 00:01:15.541\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\n00:01:15.591 --> 00:01:19.213\nThe switch-node budget stays at the original twelve millimeters.\n\n00:01:22.131 --> 00:01:24.728\nThen the analysis, measured from the board.\n\n00:01:24.778 --> 00:01:35.314\nAdom Fields flagged the ground and then the input rail over sixty amps per square millimeter, and Argon widened the copper in KiCad until every power net passed.\n\n00:01:35.364 --> 00:01:39.473\nThermal flagged the inductor again, fifty-three degrees on the switch node.\n\n00:01:39.523 --> 00:01:49.681\nThis time Argon changed the board, not the budget: fifty-four square millimeters of switch-node copper on both layers, stitched with vias, and the rise fell to thirty-two.\n\n00:01:53.149 --> 00:02:02.574\nThe silkscreen was audited on the board's real pad and via geometry, and the 3D walkthrough shows the real parts, with the new electrolytic guarding the input.\n\n00:02:02.624 --> 00:02:07.487\nEvery check on aiflow's finish line passed, with no change to the frozen budgets.\n\n00:02:07.537 --> 00:02:15.559\nRevision two: a circuit proven first, from the parts' own data, then a board built live in KiCad and ready for the fab.\n"
}