US Patent 11868224 Memory sub-system data retention via refresh

A method includes providing, when delivery of power to a memory sub-system comprising a plurality of non-volatile memory components from a main power supply is interrupted, power from an auxiliary power supply to a portion of a controller interfacing with the non-volatile memory components. The portion of the controller may utilize the power from the auxiliary power to supply to: responsive to a prediction, generated when the delivery of the power from the main power supply to the memory sub-system is interrupted, that a particular portion of the plurality of non-volatile memory components will experience an impending data loss event, perform a targeted refresh operation of data stored in the particular portion.