When do you need it? I might have something that would work but the firmware for these drivers is not finished. I have a giveaway going with them but it’s taking time: Driver giveaway: Constant current 17mm drivers, winners (finally) announced, post #2.
The Slim4 goes up to 4.5 amps if sticking within regulator specs, but I have noticed that these regulators can be slightly over-driven. Over-driving the 3 x 1 amp regulators to 1.2 amps each would get you up to 5 amps. I have not done any over-drive testing though, so I can’t yet say how well they’ll hold up in the long run. Enter the giveaway by posting what your optimal firmware looks like. If you win I’ll build one for 5 amps and you can be the over-drive tester.