Guru
Joined: 17/10/2017
Location: BelgiumPosts: 481
| Posted: 03:08pm 28 Jan 2024 |
I used what I had, one of my addictions is to buy small lots of genuine components :)
These were 5€/each.
So today after a few hours running at minimum of 60A through one sot227 package (40+20A), I could still hold the package and heatsink and it felt warm, so I think around 35°C. They are mounted on a big heatsink, the same as the 3 controllers. Doing total of minimum 70A. Heatsink is not active cooled, but room is like 18°C.
I must say it has a massive heatsink, (30*55cm with 5.5-6.5cm fins)
At the moment, 24A has 0.774V voltage drop and 5A has 0.65V drop.
I like those packages for these kind of application, they have a great thermal heat transfer.