Nomura MPPTs have not been working, so an alternative is being investigated.
They basically sold us an IC with its application circuit on the board, so creating our own custom MPPTs is more desirable.
On solar sense, there is an MPPT_Interface schematic sheet. I think it would make sense to move the isolated components to the MPPT (the buffer could be removed in that case).
Here’s some research that was done previously: DIY MPPT