Power converter
AssigneeHamilton Sundstrand Corporation
InventorsChi Zhang, Jeffrey Ewanchuk
Life of this patent
Estimating the term…
Abstract
A power converter includes a field graded substrate, a plurality of power device dies attached to the field graded substrate, a polymer layer on the field graded substrate, one or more conductors over the polymer layer, and a plurality of power conditioning components mounted on the field graded substrate to form a power converter circuit. The field graded substrate includes a first conductor layer, a graded layer that blends conductor and insulator material, and a second conductor layer, the graded layer having an insulator core.
Claims18
A power converter comprising:
- a field graded substrate comprising a first conductor layer, a graded layer that blends conductor and insulator material, and a second conductor layer, the graded layer having an insulator core;
- a plurality of power device dies attached to the field graded substrate;
- a polymer layer on the field graded substrate;
- one or more conductors over the polymer layer;
- and
- a plurality of power conditioning components mounted on the field graded substrate to form a power converter circuit;
- wherein the graded layer comprises a blend of copper and ceramic with a higher copper-to-ceramic ratio closer to the first conductor layer and the second conductor layer, the graded layer comprising a lower copper-to-ceramic ratio closer to the insulator core.
A method of assembling a power converter, the method comprising:
- printing, by an additive manufacturing process, a field graded substrate comprising a first conductor layer, a graded layer that blends conductor and insulator material, and a second conductor layer, the graded layer having an insulator core;
- attaching a plurality of power device dies to the field graded substrate;
- applying a polymer layer on the field graded substrate;
- depositing one or more conductors over the polymer layer;
- and
- mounting a plurality of power conditioning components on the field graded substrate to form a power converter circuit;
- wherein the graded layer comprises a blend of copper and ceramic with a higher copper-to-ceramic ratio closer to the first conductor layer and the second conductor layer, the graded layer comprising a lower copper-to-ceramic ratio closer to the insulator core.
Dependencies are inferred from the claim text.