UCC21520-Q1: Working voltage handle on system

Eddie, 

Are you referring to 1kV difference between channels A/B on the output side, or 1kV difference between the output side and input side of the driver?

Both should be fine for basic isolation. 

There is functional isolation between channels A/B sustains 1.5kV. 

The parameters you need to pay attention to is in Insulation Specifications section 6.6 of the datasheet

The Safety standard depends on the end equipment.... I am not sure what end equipment this is for but there is creepage requirement set by IEC60664-1 for example. 

Please do not share the full PDF of the attached document as it contains links to our internal sharepoint. 

What creepage does my isolated gate driver need_-v19-20220222_130802.pdf

Best

Dimitri