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

@@ -14,16 +14,9 @@ The board has not been fabricated yet. Everything below is design and simulation  ## The videos -<table>-<tr>-<td width="50%"><a href="https://www.youtube.com/watch?v=vKUMzy261zs"><img src="docs/img/video-youtube.jpg" alt="AI PCB Design for Engineers: watch on YouTube"></a></td>-<td width="50%"><a href="https://www.youtube.com/watch?v=MzNQ7wnrYS8"><img src="docs/img/probing-sim-youtube.jpg?v=play" alt="Probing Workcell Simulation: watch on YouTube"></a></td>-</tr>-<tr>-<td><strong><a href="https://www.youtube.com/watch?v=vKUMzy261zs">AI PCB Design for Engineers</a></strong> (about 4 min). The whole build: the prompt in <a href="https://wiki.adom.inc/adom/hydrogen">Adom Hydrogen</a>, the circuit, three SPICE engines in agreement, the live layout in KiCad 10, the current and heat analysis and the rework it caused, and the part models. <a href="docs/process-video.md">How it was made</a>.</td>-<td><strong><a href="https://www.youtube.com/watch?v=MzNQ7wnrYS8">Probing Workcell Simulation</a></strong> (3 min 15 s). This board's planned bench test, played live before it is ever built: the ground pin seated in J7, the probe landing on each test pad, every test and the instrument that reads it, with collision and tether checks. <a href="docs/probing.md">The test plan</a>.</td>-</tr>-</table>+[![AI PCB Design for Engineers: watch on YouTube](docs/img/video-youtube.jpg)](https://www.youtube.com/watch?v=vKUMzy261zs)++**[AI PCB Design for Engineers](https://www.youtube.com/watch?v=vKUMzy261zs)** (about 4 min). The whole build: the prompt in [Adom Hydrogen](https://wiki.adom.inc/adom/hydrogen), the circuit, three SPICE engines in agreement, the live layout in KiCad 10, the current and heat analysis and the rework it caused, and the part models. [How it was made](docs/process-video.md).  ## Gallery @@ -64,10 +57,10 @@ Copper, exposed pads and silkscreen from the KiCad 10 board, drawn to scale. The | J4 | (24, 12) | VOUT | 4.98 V, 1 A | | J5 | (24, 8) | GND | output and signal ground | | J6 | (24, 4) | VMON | VOUT / 2 (2.49 V) for a 3.3 V ADC, 5 k source |-| J7 | (5.25, 2.25) | GND | left free for the probing workcell's ground pin |+| J7 | (5.25, 2.25) | GND | spare ground contact for test equipment | | MP1 to MP4 | (0, 0), (24, 0), (0, 16), (24, 16) | GND | medium machine pins | -Probe pads: TP1 SW (15.6, 4.9), TP2 FB (9.4, 5.6), TP3 VOUT (21.6, 4.9), TP4 GND (15.6, 2.8), TP6 VIN (2.05, 1.95), TP7 VIN at C2 (7.0, 16.75), TP8 VOUT at L1's output (22.5, 14.0). The probing simulation added J7, TP6, TP7 and TP8 before the board was ordered, so a real probe and its ground pin can reach every test ([how](docs/probing.md)).+Probe pads: TP1 SW (15.6, 4.9), TP2 FB (9.4, 5.6), TP3 VOUT (21.6, 4.9), TP4 GND (15.6, 2.8), TP6 VIN (2.05, 1.95), TP7 VIN at C2 (7.0, 16.75), TP8 VOUT at L1's output (22.5, 14.0).  ## Parts @@ -89,7 +82,7 @@ Every part on this board has its own page on the Adom wiki, with its symbol, foo | <a href="https://wiki.adom.inc/adom/cr0402-fx-1503glf"><img src="docs/parts/cr0402-fx-1503glf.png?v=a9be28f3" width="64" alt="CR0402-FX-1503GLF"></a><br>**[CR0402-FX-1503GLF](https://wiki.adom.inc/adom/cr0402-fx-1503glf)**<br>Bourns | 1 | R5 | 150k | EN UVLO bottom | [Adom stock](https://wiki.adom.inc/adom/adom-basic-parts) | | <a href="https://wiki.adom.inc/adom/cr0402-fx-2201glf"><img src="docs/parts/cr0402-fx-2201glf.png?v=124897f2" width="64" alt="CR0402-FX-2201GLF"></a><br>**[CR0402-FX-2201GLF](https://wiki.adom.inc/adom/cr0402-fx-2201glf)**<br>Bourns | 1 | R6 | 2.2k | LED resistor | [Adom stock](https://wiki.adom.inc/adom/adom-basic-parts) | | <a href="https://wiki.adom.inc/adom/in-s63btg"><img src="docs/parts/in-s63btg.png?v=9c03517e" width="64" alt="IN-S63BTG"></a><br>**[IN-S63BTG](https://wiki.adom.inc/adom/in-s63btg)**<br>Inolux | 1 | D1 | green LED | 5 V power-good indicator | [Adom stock](https://wiki.adom.inc/adom/adom-basic-parts) |-| <a href="https://wiki.adom.inc/adom/machinecontactmedium"><img src="docs/parts/machinecontactmedium.png?v=98d8c6d3" width="64" alt="MachineContactMedium"></a><br>**[MachineContactMedium](https://wiki.adom.inc/adom/machinecontactmedium)**<br>Adom | 7 | J1 to J7 | MachineContactMedium | molecule contact: VIN, GND, EN, VOUT, VMON, and J7 for the probe ground pin | [Adom stock](https://wiki.adom.inc/adom/adom-basic-parts) |+| <a href="https://wiki.adom.inc/adom/machinecontactmedium"><img src="docs/parts/machinecontactmedium.png?v=98d8c6d3" width="64" alt="MachineContactMedium"></a><br>**[MachineContactMedium](https://wiki.adom.inc/adom/machinecontactmedium)**<br>Adom | 7 | J1 to J7 | MachineContactMedium | molecule contact: VIN, GND, EN, VOUT, VMON, and a spare GND | [Adom stock](https://wiki.adom.inc/adom/adom-basic-parts) | | <a href="https://wiki.adom.inc/adom/machinepinmediumshort"><img src="docs/parts/machinepinmediumshort.png?v=33dcf6f3" width="64" alt="MachinePinMediumShort"></a><br>**[MachinePinMediumShort](https://wiki.adom.inc/adom/machinepinmediumshort)**<br>Adom | 4 | MP1 to MP4 | MachinePinMediumShort | corner machine pin (GND) | [Adom stock](https://wiki.adom.inc/adom/adom-basic-parts) |  ## Feature guides