Thunderbolt allows video output and connection of other high speed peripherals.  Most of these systems require a 240W AC adapter -- which is more power than Thunderbolt can handle. At any rate, if Thunderbolt charging is a requirement, it's present on the XPS series (most of them anyway) -- not on  gaming (G-series, Alienware) systems.    
i am using dell g3 3500 1650ti model can i charge my laptop using type c charger if yes then how much power should be required
dell g3 3500 1650ti type c charging