Hi Patrick,

This question was answered here.

I'll close this forum now. 

Regards,

Jason

Hi, 

This appears to be a duplicate post with a discussion already at the link below. I'll close this one. 

https://ez.analog.com/interface-isolation/f/q-a/540705/can-the-ground-b-gndb-of-adum4221-1-be-driven-at--4v

Jason

Hello Patrick,

The ADuM4221-2 is the best option here. Pin 6 and 7 are actually not internally connected, so you can pull them to 5V without a problem. The ADuM4221-2 does not have built in deadtime, so deadtime must come from the controller, and the…

Hello Patrick,

The ADuM4221 secondary side supports higher supply voltage as compared to the UCC21540. Also, the CMTI rating of the ADuM4221 is higher than the UCC21540.

Regards,
Sanket

Hello,

The ADuM4221-1 is able to operate SiC devices that require a negative voltage, but there is a special way that this is achieved. The ADuM4221-1 itself cannot provide a negative voltage relative to it's GNDA or GNDB pins, but it can provide a negative…