Timeline for Why did my LED drivers blow up?
Current License: CC BY-SA 4.0
18 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 8, 2022 at 1:08 | history | became hot network question | |||
| Jul 8, 2022 at 0:31 | comment | added | Reid | Hmm... wouldn't it cause problems with the current sense if all 5 drivers' VOUTs were tied together? | |
| Jul 7, 2022 at 23:13 | comment | added | user1850479 | It is not impossible if you improve your layout. Rather than a single plane for vin, move the converters so they span the middle of the board and make half of the layer vin and half of it vout. Leave ground on the bottom. | |
| Jul 7, 2022 at 21:35 | answer | added | Sotto Voce | timeline score: 2 | |
| Jul 7, 2022 at 21:29 | comment | added | Reid | I didn't show it in the PCB diagram, but each side of the board is a plane - front is VIN, and back is GND. It would be impossible to do this for the LED power connections as there are 5 LED channels and this is only a 2-layer board. | |
| Jul 7, 2022 at 21:23 | comment | added | user1850479 | I don't think this is your only problem, but if you look at almost any buck converter the inputs and outputs are connected to planes rather than wires. In fact there may be almost no traces at all, only planes connecting components. Consider splitting the top layer into an input and output voltage plane separated by the converters while making the bottom layer a ground plane. You can route any control signals through traces on the top layer between converters. | |
| Jul 7, 2022 at 21:00 | history | tweeted | twitter.com/StackElectronix/status/1545150664677924864 | ||
| Jul 7, 2022 at 20:48 | history | edited | Reid | CC BY-SA 4.0 |
added 39 characters in body
|
| S Jul 7, 2022 at 20:44 | history | mod moved comments to chat | |||
| S Jul 7, 2022 at 20:44 | comment | added | Null♦ | Conversation in the comments has been moved to chat for further discussion. | |
| Jul 7, 2022 at 20:44 | history | edited | Null♦ | CC BY-SA 4.0 |
added information from comments
|
| Jul 7, 2022 at 19:22 | answer | added | TimWescott | timeline score: 11 | |
| Jul 7, 2022 at 19:06 | answer | added | rdtsc | timeline score: 14 | |
| Jul 7, 2022 at 18:57 | history | edited | Reid | CC BY-SA 4.0 |
added 91 characters in body
|
| Jul 7, 2022 at 17:58 | history | edited | Reid | CC BY-SA 4.0 |
added 91 characters in body
|
| Jul 7, 2022 at 17:55 | history | edited | Reid | CC BY-SA 4.0 |
deleted 18 characters in body
|
| S Jul 7, 2022 at 17:05 | review | First questions | |||
| Jul 7, 2022 at 18:05 | |||||
| S Jul 7, 2022 at 17:05 | history | asked | Reid | CC BY-SA 4.0 |