A rampant start from Dobey saw him whitewash White in the first set, sealing it with a 132 checkout, before a strong response from White saw him take the second set 3-1.
It was White's turn for a whitewash in the third to go 2-1 ahead in sets, but Dobey fired back with finishes of 120 and 100 to take the fourth 3-1.
A stunning 156 finish from Dobey put him within a leg of the semi-finals, and the Geordie sealed his place in the final four with another 100 checkout in the next leg to secure his first PDC televised semi-final berth.
"It's great to go out there and show what I can do. I felt great up there, I was a bit patchy at times but I finished well," said Dobey.
"I've got all the belief in the world and I'm playing well enough to go all the way but I'll just focus on the semis now, whoever I play. I will never look past my next game and I will prepare myself like I would for any other game."
Dobey's next test at the Citywest Convention Centre, will come in the form of current World no.1 Michael van Gerwen. Everyone at Unicorn wishes Chris all the very best of luck!