A digital controller for controlling an output regulator. The digital controller
having sub-blocks for providing functions to control the output regulator. An energy
saving discontinuous mode (ESDM) controller to monitor a sense point of the output
regulator. The sense point to indicate a power state of the output regulator and
the ESDM controller to control a flow of power to the sub-blocks to control power
consumption of the digital controller as a function of the power state of the output regulator.