this post was submitted on 30 Jan 2026
16 points (100.0% liked)

Electronics

2745 readers
1 users here now

Projects, pictures, industry discussions and news about electronic engineering & component-level electronic circuits.

Rules

1: Be nice.

2: Be on-topic (eg: Electronic, not electrical).

3: No commercial stuff, buying, selling or valuations.

4: No circuit design or repair, tools or component questions.

5: No excessively promoting your own sites, social media, videos etc.

Ask questions in https://discuss.tchncs.de/c/askelectronics

founded 2 years ago
MODERATORS
DavideAndrea@discuss.tchncs.de
linker3000@discuss.tchncs.de
16
Request for comments: USB C "trigger board" (feddit.it)
submitted 1 month ago* (last edited 1 month ago) by eutampieri@feddit.it to c/electronics@discuss.tchncs.de
7 comments fedilink hide all child comments
 

Hello, first time poster (and also no significant EE background, so bear with me).

After receiving a batch of bad USB C PD trigger boards, I decided that it would be better if I made some myself. The design is taken from the CH224K datasheet. However, I am not sure if

  1. the schematic is correct
  2. the PCB is well laid out (I really struggled to fit everything)

Here is the schematic, and here is the PCB. Both are in a Codeberg repo.

you are viewing a single comment's thread
view the rest of the comments
[–] eutampieri@feddit.it 3 points 1 month ago* (last edited 1 month ago)

That's an AMAZING comment, thank you so much!

Re: schematics. Will take this in consideration next time

Re: constraints and DRC. I haven’t done this yet because I’m really scared of the result (actually, I ran DRC and it gave me minor things). I didn’t want to invest too much time in something I didn’t know if it would work

Re: silkscreen. I placed designators there for space reasons, I will try and see if they would fit if smaller. Also, metadata in the silkscreen seems a good idea.

Re: U1. I was worried that moving the IC would mean rerouting everything. I noticed and thought "too bad", but I will try this

Re: SMD handsoldering. I never tried this before, so I figured that for me 1206 would be a good place to start. 0603 would not be comfortable 😆, I envy your colleague

Re: C1. Will do!

Re: CC resistors. It’s a great idea!

Edit: a hot plate would be needed for the CH224, right? Or I could try PCBA and go for 0603s

Edit 2: So it is fine to use vias to connect those two ground planes this way?