EPC2152-issue on startup

Hi,

I have an issue with my design involving the EPC2152. I believe the component is irreversibly damaged. It is part of a buck converter, and according to the datasheet, all voltage and current values are within the correct range.

However, I have some doubts about the LSin and HSin signals. I applied 0V to HSin and 3.3V to LSin “before” supplying 12V to VDD. Could this procedure have damaged the component?