hi...
i want make a buck boost converter but i need to circuit and equations for components(inductor and capacitor)...
so..my_data:
input_voltage:10.6 until 12.5
output_voltage:12
output_current:30A
Fsw=50KHz
can you help me??

 

If you are still online, please take into consideration that this is relatively not easy task, and it might need the involvement of micro controller.
In general, you will need a buck - boost converter, to be able to step up and also step down according the output feedback.

It seems that you need a more stable 12V power supply. Maybe is easier to take a step back and review a more stable 12V power supply to avoid going the hard way.

 

This is a great little bit of software to have for DC-DC designs:
http://www.ti.com/tool/POWERSTAGE-DESIGNER

 

You should check in some distributor website and filter what you like, then you start narrowing your results. You will how the datasheet of the product you pick will have all of the information you want and also some component suppliers also have online designs for their components where you can change the values and inmediatly you will see the results

 

hi...
i want make a buck boost converter but i need to circuit and equations for components(inductor and capacitor)...
so..my_data:
input_voltage:10.6 until 12.5
output_voltage:12
output_current:30A
Fsw=50KHz
can you help me??

Basic Calculations ( equations ) for the Power Stage
http://www.ti.com/lit/an/slva721a/slva721a.pdf

Feedback Compensation ( equations )
https://www.ti.com/seclit/ml/slup340/slup340.pdf