Microchannel thermal management system

A microchannel thermal management system for thermally managing a heat producing device. The microchannel thermal management system includes a housing having an interior surface, a cap having a plurality of microchannels attached to the interior surface of the housing, and an inlet port and an outlet port extending through the housing in fluid communication with the microchannels. Alternatively, the microchannels may also extend into the interior surface of the housing. The cap is preferably thermally attached to a heat producing device by a thermal interface layer. Thermally managed coolant enters the inlet port passing through the microchannels conducting heat transferred to the cap by the heat producing device and exits through the outlet port.