Insulated metal substrates incorporating advanced cooling
A power module includes one or more semiconductor power devices bonded to an insulated metal substrate (IMS). A plurality of cooling fluid channels is integrated into the IMS.
1. A power module comprising:
an insulated metal substrate (IMS) comprising:
a circuit layer comprising an insulator material including metallized circuitry integrated therein and a first plurality of thermal vias disposed there through;
an insulator layer comprising a first surface bonded to a first surface of the circuit layer; and
a metal base layer bonded to a second surface of the insulator layer opposite the first surface of the insulator layer, the metal base layer comprising a plurality of cooling fluid channels integrated therein; and
at least one semiconductor power device bonded to a second surface of the circuit layer opposite the first surface of the circuit layer; wherein each semiconductor power device comprises a corresponding case with external electrical contacts, and further wherein each semiconductor power device case abuts a corresponding plurality of thermal vias selected from within the first plurality of thermal vias, and further wherein the first plurality of thermal vias are spaced apart from the semiconductor power device external electrical contacts.
2. The power module according to claim 1 , further comprising a heatsink mounted to the IMS, the heatsink comprising a manifold array configured to provide coolant flow through heatsink inlet and outlet plenums to cool the at least one semiconductor power device via the plurality of cooling fluid channels.
3. The power module according to claim 1 , wherein the cooling channels comprise micro-channel dimensions to milli-channel dimensions.
4. The power module according to claim 1 , wherein the base layer comprises aluminum or copper.
5. The power module according to claim 1 , wherein the top circuit layer comprises a plurality of circuit path layers.
6. The power module according to claim 2 , wherein the heatsink comprises a moldable, castable or machinable material.
7. The power module according to claim 2 , further comprising a compressible seal disposed between the IMS and the heatsink, the compressible seal operating to prevent leakage of cooling fluid from the power module.
8. The power module according to claim 2 , wherein the mounted heatsink is configured to transfer a single phase or multi-phase liquid coolant to and from the IMS.