US Patent 11495518 Multi-surface heat sink suitable for multi-chip packages

An apparatus incorporating a multi-surface heat sink may comprise an integrated circuit die, a heat spreader, a plate element, and a heat sink. The heat spreader may be positioned above the IC die. The plate element may be positioned above the heat spreader. A bottom surface of the heat sink may have a first region positioned above the plate element. One or more spring elements may be positioned between the plate element and the first region of the bottom surface of the heat sink. The one or more spring elements may be under a compressive load between the plate element and the heat sink. One or more thermal conduit elements may be secured to both the plate element and the heat sink. The one or more thermal conduit elements may apply at least a part of the compressive load between the plate element and the heat sink.