Can my psu handle gtx 1050 ti 2gb

There's no such thing as a GTX 1050 Ti 2GB. The "Ti" version only comes in 4GB, while the non-Ti version only comes in 2GB. If someone were advertizing a card as a "GTX 1050 Ti 2GB", then they're not being honest about what the card actually is, and I would be hesitant to buy from them.

A regular GTX 1050 2GB is a fine enough card though, and is only around 10-15% behind the 1050 Ti's performance, so it currently offers better performance for the money with graphics card prices like they are.

As for the question, both the 1050 and 1050 Ti shouldn't draw more than around 70 watts from the PSU while gaming, so they are likely to work with most power supplies.