Patent ID: 11862531
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. An electric energy conversion apparatus, comprising:
a power device assembly having a circuit board, a heat sink, a fastener, and a power device, the power device comprising:
a plurality of pins; and
a package body,
the package body comprising a substrate structure, a semiconductor die, and a molded package, the semiconductor die being disposed on the substrate structure, the substrate structure comprising a heat dissipation surface connectable to a heat sink, the molded package covering the semiconductor die and the substrate structure excluding the heat dissipation surface, a through hole extending through the substrate structure and the molded package, the molded package covering an inner wall of the through hole, the package body further comprising a top portion, a bottom portion and side portions, the top portion and the bottom portion being disposed opposite each other, a surface of the bottom portion away from the top portion being disposed facing the circuit board, the heat dissipation surface being located along a surface of the top portion, the side portions connecting the bottom portion and the top portion;
a first end of each pin being connected to the substrate structure, a second end of each pin and the heat dissipation surface being uncovered by the molded package, the second end of each pin comprising a mounting surface connectable to the circuit board in a surface mount manner with the pin mounting surface positioned parallel to the circuit board, the plurality of pins being distributed along the package body side portions, each pin extending from the package body side portions to the package body bottom portion, the mounting surface of each pin extending parallel along one of a bottom surface or a top surface of the circuit board, an orientation of the bottom portion being the same as that of the mounting surface, the mounting surface of the second end of each pin and the circuit board being connected together to form an electrical connection, the heat sink comprising an assembling surface provided with a connecting hole, the fastener passing through each of a cutout formed in the circuit board, a through hole of the power device, and the connecting hole to connect a heat dissipation surface of the power device to the assembling surface.