I'm looking for a chip or schematic designing an adjustable buck-boost converter for charging supercapacitor cell with CC & CV capability and control it using the microcontroller serial interface. the output must bear 0-60 volts with at least 5A current. an example is attached from Droking company. any idea? https://www.amazon.com/DROK-Regulator-Converter-Transformer-Capacity/dp/B071LGTTRN
With a sufficient input voltage supply (i.e. 70 volts) you don't need a buck-boost regulator so just consider a buck like this one: -
Getting the output down to 0 volts requires extra circuitry but maybe 0.8 volts is sufficient? Controlling from an MCU would require some external circuitry and possibly consider using a digipot but there are other ways to skin a cat such as injecting a voltage into the VFB pin via a high value resistor from a DAC.
Using the MCU controller and DAC/Digipot means that other pins of the MCU can be used for a serial interface.
You do not indicate how much control you want or need or if you have other requirements.
I believe using an off the shelf (OTS) unit would be your best bet unless you want to actually go into production selling these supplies. If they are for internal use I would have someone else do all the hard work. If it is for hobby, test, development or experimental use then I would find a cheap unit and modify it as needed. If you plan to develop I would still purchase half a dozen competitive units and reverse engineer them and read all the data sheets and application notes for parts they use.
There are a number of serial programmable power supplies on the market from US$30 to US$340-55=$285 in the 60V 5A range some with charging programs built in. They are typically needing a filtered input voltage with no dips below the output (+2V or so) and the rest is done in a simple PCB. The more expensive ones include a case and the input supply.
Here is a Open Source hack of a similar 50V 5A switcher that you could start from.
Planning to develop one from scratch is going to cost you mode.
There are even more professional solutions that have software licences inside rack mainframes and all such neat stuff. The prices may also be professional but the products are sure to be of a high quality.