A system comprising: a first power converter configured to convert a first input power to a first output power, wherein the first power converter is controlled using pulse width modulation having a first switching period; one or more second power converters connected in parallel with the first power converter and configured to convert a second input power to a second output power, wherein the first output power and the second output power are provided to a load and one of the one or more second power converters is controlled using pulse width modulation having a second switching period; at least one first current sensor (18a-c) positioned to sense a first output current of the first output power; at least one second current sensor (20a-c) positioned to sense a second output current of the second output power; a first feedback control circuit configured to calculate a first current metric, indicative of recirculating current, based on the first output current sensed at each of a plurality of first edges of each half switching period of the first switching period, and at an intermediate point between each of the plurality of first edges; and a second feedback control circuit configured to calculate a second current metric, indicative of recirculating current, based on the second output current sensed at each of a plurality of second edges of each half switching period of the second switching period, and at intermediate points between each of the plurality of second edges; wherein the first feedback control circuit is configured to adjust the first switching period based upon the first current metric and the first power converter is further controlled using a first carrier wave, and wherein the plurality of first edges are upper and lower bounds of the first carrier wave, wherein the upper bounds of the first carrier wave correspond to peaks of the first carrier wave and the lower bounds of the first carrier wave correspond to troughs of the first carrier wave, and wherein the first current metric is based further upon a root mean square of the difference between the first output current at each of the plurality of first edges and the intermediate points between each of the plurality of first edges; and wherein the second feedback control circuit is configured to adjust the second switching period based upon the second metric and the one or more second power converters is further controlled using a second carrier wave, and wherein the plurality of second edges are upper and lower bounds of the second carrier wave, wherein the upper bounds of the second carrier wave correspond to peaks of the second carrier wave and the lower bounds of the second carrier wave correspond to troughs of the second carrier wave. a first power converter configured to convert a first input power to a first output power, wherein the first power converter is controlled using pulse width modulation having a first switching period; one or more second power converters connected in parallel with the first power converter and configured to convert a second input power to a second output power, wherein the first output power and the second output power are provided to a load and one of the one or more second power converters is controlled using pulse width modulation having a second switching period; at least one first current sensor (18a-c) positioned to sense a first output current of the first output power; at least one second current sensor (20a-c) positioned to sense a second output current of the second output power; a first feedback control circuit configured to calculate a first current metric, indicative of recirculating current, based on the first output current sensed at each of a plurality of first edges of each half switching period of the first switching period, and at an intermediate point between each of the plurality of first edges; and a second feedback control circuit configured to calculate a second current metric, indicative of recirculating current, based on the second output current sensed at each of a plurality of second edges of each half switching period of the second switching period, and at intermediate points between each of the plurality of second edges; wherein the first feedback control circuit is configured to adjust the first switching period based upon the first current metric and the first power converter is further controlled using a first carrier wave, and wherein the plurality of first edges are upper and lower bounds of the first carrier wave, wherein the upper bounds of the first carrier wave correspond to peaks of the first carrier wave and the lower bounds of the first carrier wave correspond to troughs of the first carrier wave, and wherein the first current metric is based further upon a root mean square of the difference between the first output current at each of the plurality of first edges and the intermediate points between each of the plurality of first edges; and wherein the second feedback control circuit is configured to adjust the second switching period based upon the second metric and the one or more second power converters is further controlled using a second carrier wave, and wherein the plurality of second edges are upper and lower bounds of the second carrier wave, wherein the upper bounds of the second carrier wave correspond to peaks of the second carrier wave and the lower bounds of the second carrier wave correspond to troughs of the second carrier wave.