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US 12,132,469 B2Granted
Galvanically isolated driver package for switch drive circuit with power transfer
AssigneeAllegro MicroSystems, LLC
InventorsAndrew Thompson, Joe Duigan, Karl Rinne
Life of this patent
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Abstract
The present application provides a packaged gate drive circuit having a transformer. The transformer which is used to transfer both signals and power from a primary side to a secondary side. The windings of the transformer are formed using a combination of tracks and wirebond wires. The transformer is positioned in a well formed using a first insulating material and covered with a second insulating material.
Claims12
An isolated gate drive comprising:
- a transformer having a core, a primary winding and a secondary winding;
- a substrate having a first major surface and a second major surface opposing the first major surface;
- a first insulating material provided on said substrate, the first insulating material in combination with the first major surface of the substrate defining a well, wherein the first insulating material covers the first major surface outside of the well;
- wherein the core is disposed within the well and one or both of the primary and secondary windings are partially formed by one or more wirebond wires bonded to landing zones on the first major surface;
- and
- a second insulating material disposed in the well and covering the wirebond wires and core, wherein the second insulating material is softer than the first insulating material.
3 more elements
Dependencies are inferred from the claim text.