Im trying to build a digital adjustable power supply using an arduino and a dc-dc cc cv buck converter. It uses 2 pots to control voltage and current.
I have every thing i need to moniter the voltage and current with the arduino but i would like to control the current and voltage with the arduino.
I have been searching on google for the last 2 days trying to find a digital pot that would work. The problem is the voltage at the pot is the same as the output voltage. So when outputting 14V the voltage at the pot is 14V. Most digital pots only allow around 5.5V. The ones that dont need a referance voltage of 10V or more.
Does anyone have any idea of a solution?