Feedback on schematic correct implementation

ward · ‎2025-02-19

Hi all,

I have no experience in designing a schematic, and I want to design one for my project where I will be using an STM32C0 with an RFM95. I also want to include a LiPo charging circuit, but I’m not sure if my design is correct, especially the LiPo charging circuit.

Would be happy for your feedback

Andrew Neil · ‎2025-02-19

Before creating a custom PCB, be sure to prove your design using dev kits, breakout boards, etc.

Sorry, the resolution of your image is too poor to read clearly.

Did you study Application Note AN5673, Getting started with STM32C0 MCU hardware development:

https://www.st.com/resource/en/application_note/an5673-getting-started-with-stm32c0-mcu-hardware-development-stmicroelectronics.pdf

Also check out the other Application Notes, etc, on the 'Documentation' tab of the chip's Product Page:

https://www.st.com/en/microcontrollers-microprocessors/stm32c071kb.html#documentation

See also schematics of relevant ST Discovery and/or Nucleo boards ...

ward · ‎2025-02-19

Hi Andrew,

yes i am planning to test the design with dev Kit before creating the custom PCB.
My only concern in this schematic is the Power Section specially the Lipo Charging circuite.
i have devided the schematic in 3 different pictures so it can be more readable.

Thanks for the support.

Andrew Neil · ‎2025-02-19

That's better!

I would strongly suggest that you add NRST to your debug header - that can get you out of some holes where you'd be stuck with just SWD.

@ward wrote:
My only concern in this schematic is the Power Section specially the Lipo Charging circuite.

But that part has nothing to do with the STM32, and you're not using ST parts - so that's really off-topic for this forum.

ward · ‎2025-02-20

@Andrew Neil wrote:
That's better!
Thank you for the suggestion
I would strongly suggest that you add NRST to your debug header - that can get you out of some holes where you'd be stuck with just SWD.

@ward wrote:
My only concern in this schematic is the Power Section specially the Lipo Charging circuite.
But that part has nothing to do with the STM32, and you're not using ST parts - so that's really off-topic for this forum.

I thought maybe someone here has some knowledge about this and could help me out.

But thank you for the support.