EDIT: Before assuming the BD92001 chip is dead, first try removing and then re-seating the ribbon cable from the touchpad module and if it still overheats or doesn't charge then it would more likely be the chip defected.
The likely cause is a defected BD92001 chip (battery power manager) which seems to break when used with fast-chargers. This chip is difficult to remove and replace without fancy equipment (hot-air/IR rework station) due to a large ground pad on the bottom of the chip. That chip costs about $10 from chinese vendors (note: 3x more price if bought from North America vendors, but they just middle man the chinese vendors sooo why pay more when its same delivery time and cheaper to order direct). A skilled and equipped electronics technician would be able to do the repair within 15 minutes if they had the part on hand.
Here's a vendor that I recently ordered this part from: https://www.zedlabz.com/products/replace...
An alternative solution is to swap out the whole controller motherboard with a working motherboard from a donor controller.