Beginners • Best practice for powering Raspberry Pi Pico from a USB-C port?

I am designing a pcb with a USB-C port that will breakout into pins (VCC, GND, D+ and D-) to then be connected to the Pico.

From my research, I know I need to add 5.1k resistors on the CC lines to indicate it is a port that receives power.

The USB-C port receives 5V power. According to the datasheet I can safely route this 5V pin to VSYS on the Pico. Presumably an internal voltage regulator then feeds 3.3v into the components etc. of the Pico.

The other options is to incorporate a voltage regulator (with capacitors) on my pcb to output 3.3V and then route that to 3V3(OUT) on the Pico.

I was just wondering what the best practice would be for longevity as I'm probably going to order a lot of these pcbs and as far as I'm aware the excess energy is dispersed as heat.

Please correct me if I'm wrong, I'm very new to this but really enjoying the learning process.

edit: I know there are Pico's with USB-C ports (that's what I'm using actually) but for my purposes the Pico will be built into the device and the user won't be able to access it to plug/unplug a USB-C cable. On a side note, would it be plausible to connect the breakout pins directly to the USB-C port on the Pico with something like this?:

Statistics: Posted by Pure1108 — Tue May 07, 2024 9:30 pm — Replies 0 — Views 15

---