A digital power monitoring circuit for monitoring power through an output inductor of a switching power supply in accordance with an embodiment of the present application includes a first analog to digital converter receiving a current sense signal indicative of the current through the output inductor and providing a first digital signal including information regarding the current through the output inductor, a second analog to digital converter receiving a signal indicative of the output voltage of the switching power supply and providing a second digital signal containing information regarding the output voltage of the switching power supply; and a convolver circuit operable to receive the first digital signal and the second digital signal and to provide a third digital signal including information regarding the power through the output inductor based on the first and second digital signals.