Yes, it should work with up to 15 watts, as is typical for Samsung, so no problems! By the way, I am very satisfied with the part.
I used to have a cheap product from Wish, but it got so hot that the charging plate melted.
So it's better to go for the original!

@Saracinof Therefore it works flawlessly with my S10+, you can confidently use it flawlessly with your S20 5G.