Suitable STM32 for adjustable dc-dc power supply

[erol_ozkarsli]

Hi everyone,

I plan to build 0-60 volt 30 Amps adjustable (menu driven) lab power supply both ac and dc(battery) input

I'm new at st mcu and need some advise about choosing right device both controller and user interface.

thanks inadvance.    

[Peter BENSCH]

Welcome @erol_ozkarsli, to the community!

This request is extremely unspecific because the community can imagine anything from a complete power supply control to a ready-made power supply block that is (only) controlled by a controller. You didn't even give any details about the user interface: Potentiometer with pointer? Seven-segment displays? Graphic display? After all, you are talking about a power supply unit that is supposed to deliver up to 1.8kW.

What does your first brainstorming approach look like?

Regards
/Peter

[Andrew Neil]

As @Peter BENSCH  said, your question is vague in the extreme and, therefore, impossible to answer.

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@erol_ozkarsli wrote:

I'm new at st mcu     

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Are you familiar with any other microcontroller(s) ?

Do you have electronics design experience - particularly with high-power supplies ?

Getting started with STM32:

https://community.st.com/t5/stm32-mcus-products/for-better-learning-stm32-programming-and-debugging/m-p/719468/highlight/true#M260690

Resources to find an STM32 suitable to your requirements:

https://www.st.com/en/development-tools/st-mcu-finder-pc.html

https://www.st.com/en/development-tools/stm32-finder.html

https://www.st.com/content/st_com/en/stm32-mcu-developer-zone/mcu-portfolio.html

Distributors often have good parametric search tools ...

PS:

For ST's Power Electronics range, see:

https://www.st.com/en/power-modules-and-ipm.html

https://www.st.com/en/power-management.html

https://www.st.com/en/power-transistors.html

There is also a dedicated forum section: 

https://community.st.com/t5/power-management/bd-p/power-management-forum

[erol_ozkarsli]

Hi Peter,

You are right, sorry for unclear request about project and myself. 

Let me give some details about PS that I plan to build; 

It will be the Buck Converter PS due to its high efficiency, simplicity, and capability to handle varying loads effectively.

Implementing PWM control, feedback loops for voltage and current regulation and addressing light load conditions  

make it versatile PS that meets my requirement.

There is no question about Power Stage I already use TI piccolo MCU (F280041C) for simulation which I am familiar with, and because of some difficulties obtaining TI products I replace it with EU made ICs and ST is my first choice

that's why I ask for help to find out the right MCU.

thanks for your understanding 

Regards

[erol_ozkarsli]

Hi Andrew.

Thanks for your response and advices, 

Regards

erol 

[erol_ozkarsli]

Hi again Peter,

Let me give some details about the UI ;

 It will be 4 buttons for selecting voltage and current adjustment, 1 button for enable disable output  and plan to use 4 lines Char LCD that shows current selection and actual values. But I am open any idea and suggestion, I prefer doing this with same MCU but separate one also acceptable.

 About PS controller MCU side;

switching frequency between 50 kHz to 200 kHz.

voltage loop 1-2 kHz 

current loop 15-20 kHz

at least 4 PWM channel 

ADC/DAC and Amplifier features some base requirement of target MCU

Regards

[mƎALLEm · Accepted solution]

Hello,

(I'm not power supply design expert)

Look at the STM32F3 or STM32G4 series:

As you've already used another MCU for the same application, better to make a comparision with what you have used in it with what is available in the F3/G4 series.

Are you looking to use a HRTIM (High resolution timer) or a generic 16/32bit timer?

Look also at this video presented by an ST partner, I think it may give you an idea (using STM32G474 MCU).

Hope that helps.

[erol_ozkarsli]

Hi m3ALLEm,

Thanks for advice the STM32G4 series looks fit my project and video you linked give me good starting point to get familiar with ST

thank you so much 

[mƎALLEm]

If my previous comment answerd your question please mark it as solution.

Thanks