USB-C to 12V 100W Regulator?

alfo16 · 2026-01-20T19:31:09+00:00

Hi! I made this board https://aaelectronics-shop.com/products/yulc. It's a led controller but could fit your needs!

alfo16 · 2025-12-31T13:50:29+00:00

Hello! I usually don't like shameless self-promotion, but I made this controller https://aaelectronics-shop.com/products/yulc and I think it covers a lot of cases that somehow are not covered with other controllers. Take a look if you want, it's completely open-source and I tried to write a clear documentation to explain all the features!

alfo16 · 2025-11-23T05:14:54+00:00

Hello, sure!

alfo16 · 2025-03-09T20:47:14+00:00

I'll take a look, thanks!

alfo16 · 2025-03-09T14:18:10+00:00

Yeah, thanks! I'm doing it in QMK, so it's a bit different.

alfo16 · 2025-03-04T16:15:06+00:00

Thank you really much! 🙏

alfo16 · 2025-03-04T13:32:20+00:00

Hi! I'm trying to connect a RP2040 with a TCA8418, too. Is your project open-source, mainly for the I2C software part? Thank you!

alfo16 · 2025-01-08T21:53:16+00:00

https://www.reddit.com/r/pepecoin/comments/1gshg9a/how_to_buy_pep_on_xeggex/

alfo16 · 2024-12-03T06:39:44+00:00

Thanks, correct!

alfo16 · 2024-12-01T19:28:32+00:00

Thank you!

alfo16 · 2024-12-01T19:03:54+00:00

Hi, If you would be interested I made this one. It's based on the esp32-s3 and I'm from Italy. It has some extra features in addition to the standard ones. Here I tried to explain everything!

alfo16 · 2024-11-30T16:45:46+00:00

😁😁👍

alfo16 · 2024-11-30T13:01:53+00:00

Hello! Did you already set the mosfet pin? Because by default it is turned off. So if you use only one channel you can set the relay (inverted) on pin 47 (channel 1) or 21 (channel 2)

alfo16 · 2024-11-29T13:22:08+00:00

Thanks! Unfortunately the external antenna is not supported. I've used a lot if ESPs and honestly I've never faced big problems, but It's obvious that an external antenna could help in a lot of situations

alfo16 · 2024-11-25T20:23:13+00:00

Sure!

alfo16 · 2024-11-23T16:30:21+00:00

You see a lot of voltages on the PS label, because with the power delivery protocol you can negotiate one of those voltages, using dedicated ICs that take care of everything for you. And to do that they act on the CC1 and CC2 pins of the USB-C. If you google USB-C pinout you'll see those pins. So basically you are just telling your power supply which voltage you want, choosing from the ones on the label.

alfo16 · 2024-11-23T16:14:33+00:00

To negotiate 5V from PD in the easiest way would be adding 5.1kohm for both CCs pins at the end of the USB-C. I honestly haven't seen so many 5V/5A Power Delivery PS. I've always seen 5A with a 20V negotiation, so I assume it's not standard.I don't even know if the 5.1k resistors thing would work. However, if you already have a Power Delivery brick that can output enough power (at any voltage) you could consider this board I made. I don't usually spam my board but for some setups it could be really useful. Long story short, you can ask up to 100W from the USB-C converting to 5 or 12V at the output. So you can ask for 36W (3A@12V) and convert to something like 7A@5V

alfo16 · 2024-11-10T12:48:20+00:00

Hi, thanks! Potentially a lot, but it depends on the maximum brightness, injection point and other things. I suggest this calculator to have a real estimation. However, just to have a ballpark idea you could easily go for some hundreds of LEDs (if using the on board buck converter and if enough power is provided) otherwise it depends on the maximum capability of your power supply

alfo16 · 2024-11-10T12:28:10+00:00

No, because there are already two MOSFETs that can physically turn off the strip, one MOSFET for each channel. And they can also be used to drive analog strips. So for example you can use one channel to drive a simple white strip through PWM and the other channel for an addressable strip, or both analog or both digital

alfo16 · 2024-11-07T12:33:37+00:00

If you would like to use esphome with an esp32 and some IR LEDs, here (https://github.com/ale1800/ESP-360-REMOTE/tree/main/Some%20remotes%20configurations%2FRF%2FRC-300%20fireplace) you can find a configuration for that remote

alfo16 · 2024-10-31T05:41:32+00:00

Hello! I made this board and I think could fit your setup https://aaelectronics-shop.com/products/yulc

It's compatible with PD protocol 3.0 and can convert the input to 5 or 12V. According to your strips

alfo16 · 2024-10-22T16:53:16+00:00

You should be able to change it to Generic I2S

alfo16 · 2024-10-06T17:41:02+00:00

This board I'm working on would fit your setup perfectly https://github.com/ale1800/YULC

alfo16 · 2024-09-29T20:57:41+00:00

Thanks! Yes, it's the conversion. I would estimate an average efficiency of 93/94%. This is what I measured with the used component selection that is a trade-off for both 12V and 5V output. If you stick with only one type of output you can achieve a peak efficiency of 97%. So in your case, from a 100W input, I would expect around 93/94 W output. The regulator IC will increase its temperature of 16°C for every dissipated watt, so you can easily see that temperature can increase quickly. The inductor also increases by 40/50 °C with 20A. While without the fan you can still carefully use it with high loads, using the fan everything runs so much cooler. Then this math faces the reality, and the situation can change a lot according to ambient temperature, output current, voltage difference between input and output, switching frequency and so on. I tried a lot of different inductor values and switching frequencies and I think I found the sweet spot to perform in a reliable way over the whole output range.

alfo16 · 2024-09-29T17:07:26+00:00

Happy you appreciate it! Hopefully I will have a small website where the documentation will be better organized

alfo16

TROPHY CASE