I'd like to use TI's DRV8432 motor controller (because it's the only >6A, integrated dual motor controller I can find). The trouble is, it requires a heatsink mounted on top of the IC. See this picture from its datasheet
I've never encountered a package like this before. I'm not sure how to find a mechanically compatible top-mount heatsink, or how it would be secured in place. So I need some design guidance for heatsinks like that.
I've noticed adhesive-backed heatsinks online, but I'm not sure if those are the standard way to solve the problem or if there's something better. (I'm baking the PCBs myself in a toaster oven, so I'm not constrained by manufacturing concerns, though I would like to know the manufacturable way to solve this.) I'd appreciate any help or links.