CM- or DM-coil from SMPS to single-ended classD?

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Hi.

I'm (almost) embarrassed to ask this as it should be pretty simple, but I can't make up my mind so here goes:

Given a LLC-SMPS delivering +/-60V to a single-ended classD-amp: would you put a common-mode- or differential-mode-coil betweem PSU and Amp?

The purpose of the coil is dual: filtering noise from PSU to amp, but maybe also filtering the switching from the amp getting back into the supply (or radiating out from connecting wires).

Or is both "wrong"?

Kind regards TroelsM
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.