Hello,
I have a digital buck converter with hrtim. I followed examples Buck_VoltageMode_HW etc. So far so good, output is stable, well regulated to fixed value.
But what if want adjustable output by the user? What is the strategy to do that? I can do a prescaler from feedback ADC to adjust the output, but i feel that it is not the right way to do that properly.
I'm not well oriented in control theory, but when i set different output voltages in Biricha WDS, control B parameters are slightly different.
Unfortunately, I don't have access to bode plot.
What is the proper way to solve this?
- Leave B parameters fixed and hope that smps will be stable with different output voltages
- Make a lookup table with B parameters for lets say 0,5V steps in output
- Calculate b parameters on MCU.
- ???
Thank you for the suggestions.
Hynek
