By default, the boot voltage for channel A is given by pin-detection on the BOOT_CHA pin. Alternatively, configure the device to use a value stored in non-volatile memory (NVM) for VOUT_COMMAND using the PIN_DETECT_OVERRIDE command. See Section 7.4.4 for more information. The boot voltage for Channel B is given by the value stored in non-volatile memory for VOUT_COMMAND always. Whenever power conversion is enabled, each channel boots to its VBOOT value, regardless of whether the output voltage was changed after the last boot-up.

Use the VOUT_COMMAND PMBus command or the AVSBus Vout command to change the output voltage on-the-fly. This is one implementation of adaptive voltage scaling (AVS) or dynamic VID (DVID). Output voltage transitions occur at the value slew rate specified by the VOUT_TRANSITION_RATE command.