VREGMAIN is the main regulator of the system.
The device only supports DC/DC mode, which needs external components. For details, see Reference circuitry.
VREGMAIN starts up using a fall-back mode, and the DC/DC regulator must be enabled using register VREGMAIN.DCDCEN.
Inductor detection
The DC/DC regulator requires an external inductor connected to the DCC pin. If an inductor is not present, the regulator stays in fall-back mode to enable a soft shut-down of the system. Register VREGMAIN.INDUCTORDET reports the inductor detection status and can be used to detect inductor failures that prevent DC/DC operation.