Yeah, there are a few of them type of threads laying around here.
This driver is not available as a complete driver yet, but it appears to be getting there: [[ GXB20 Driver – Homemade Constant Current Programmable XHP50 Single-Cell Boost Driver! ]]
A few posts up (post #34) there are links to another driver which appears to be fully developed. Serp should have more details if it’s available for purchase.