A power system including an input configured to receive input AC power, a DC output configured to provide output DC power to a load, an AC output configured to provide output AC power to the load, an AC/DC converter coupled to the input and configured to convert the input AC power into DC power, a DC bus, and a controller configured to monitor a current demand at the DC output relative to a demand threshold, operate, in response to a determination that the current demand at the DC output is below the demand threshold, the power system in a first mode of operation by enabling the AC/DC converter to provide DC power to the DC bus, and operate, in response to a determination that the current demand at the DC output is above the demand threshold, the power system in a second mode of operation by disabling the AC/DC converter.