usb3.0 controller (CYUSB301X) , power off surge, ESD

[Anonymous]

I used the usb3.0 controller (CYUSB301X) for USB camera.

   

A few days ago, cameras did not working.

   

I supply 5V power for usb_vbus using 5V SMPS then I found power off surge. ( max : 7~8V , 10~20 nano second )

       

I wonder this power off surge can give a damage to CYUSB301X ?

   

The operating condition of this chipset is 3.2V~6.0V .

   

But can give a damage to the chipset through the very short time (10~20 nano seconds , not micro second) ?

       

Please refer to attached picture.

   

Thanks.

[Anonymous]

Same as this thread (http://www.cypress.com/forum/usb-30-super-speed/usb30-controller-surge-esd#comment-340761)