I’ve been researching MOSFETs and came across a very interesting design, where the entire MOSFET is clad with metal and part of the drain, which means you could literally solder the tops to a rail.
My test case is aptly named Cannonball. I’m sharing it here, if anyone wants a plug-in 3-phase module, you could use it as a mezzanine on any BLDC board design and save yourself the other layers for signals or whatever. Some soldering required. The cost of one module is about $8, excluding shipping.
Dimensions are 20 x 35 mm. Individual MOSFETs are rated at 300A, however you are limited by the copper to about 50A on the entire board before you smoke the solder.
The idea is, you could combine the two on a custom board with your own external components, for people who want pre-built blocks, like a lego.
One shortcoming, only 12V max.
If I got time in the future I could standardize and create footprints and you could drop different components depending on what voltage or power you want, but that’s more of a fantasy now, I’ve got other stings to do.
