Hi!
A good friend of mine brought to my workbench quite a powerful LED bar with couple of blown mosfets, but also an IC with the marking TP4122. This IC is impossible to find on the webb and thought maybe one of you guys seen it before or recognise it from a similar circuit. I made a schematic so you can see what I am talking about and this LED driver is supposed to work with a Vin from 9 to 36 volts.