Supply circuit for power module with built-in isolation transformer and associated power module

Inventors: Jean Sylvio Ngoua Teu Magambo (Moissy-Cramayel, FR); Thanh Long Le (Moissy-Cramayel, FR); Rabih Khazaka (Moissy-Cramayel, FR)

Assignee: SAFRAN

H01F27/02 B64C19/00 H01F27/24

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Quick Facts

Patent No.: US 12712109
App. No.: 18/003,840
Granted: Aug 18, 2026
Kind: B2

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Abstract

Electrical power supply circuit for a power module comprising an electrical transformer, a first substrate having a first side including a heat sink and a second side, a second substrate having a first side including a heat sink and a second side, first metal tracks disposed on the second side of the first substrate, second metal tracks disposed on the second side of the second substrate, electrical connectors disposed between the first and second substrates to electrically connect a first metal track to a second metal track, the primary circuit of the electrical transformer comprising a first part of the first metal tracks and a first part of the second metal tracks, and the secondary circuit of the electrical transformer comprising a second part of the first metal tracks and a second part of the second metal tracks.

Claims (16)

1 . A power module comprising electrical power components, a circuit for controlling the power module, an electrical power supply circuit, and a first power module substrate and a second power module substrate each having a first side including a first heat sink and a second side opposite to the first, the second sides of the first and second power module substrates being disposed facing each other, and the electrical power supply circuit, the control circuit, and the electrical power components being disposed between the first and second power module substrates, a first substrate of the electrical power supply circuit being formed by a part of the first power module substrate and a second substrate of the electrical power supply circuit being formed by a part of the second power module substrate, the electrical power supply circuit comprising an electrical transformer including a primary circuit and a secondary circuit,

wherein the electrical power supply circuit comprises:

the first substrate having a first side including the first heat sink and a second side opposite to the first side,

the second substrate having a first side including a second heat sink and a second side opposite to the first side, wherein the second side of the second substrate faces the second side of the first substrate,

first metal tracks disposed on the second side of the first substrate, and second metal tracks disposed on the second side of the second substrate, and

electrical connectors disposed between the second side of the first substrate and the second side of the second substrate, the electrical connectors electrically connecting the first metal tracks to the second metal tracks,

wherein the primary circuit of the electrical transformer is electrically connected to a first part of the first metal tracks and a first part of the second metal tracks, and the secondary circuit of the electrical transformer is electrically connected to a second part of the first metal tracks and a second part of the second metal tracks, wherein the electrical power supply circuit includes an electrical isolator made of polymer material in which electrical elements disposed between the first and second substrates are encapsulated.

2 . The electrical power supply circuit according to claim 1 , further comprising a magnetic circuit formed by a magnetic core inserted between the first and second metal tracks and surrounded by at least a part of said electrical connectors.

3 . The electrical power supply circuit according to claim 2 , wherein the magnetic core is produced by an additive manufacturing process such as a powder injection molding process.

4 . The electrical power supply according to claim 1 , wherein the electrical transformer is devoid of a magnetic core.

5 . The electrical power supply circuit according to claim 1 , wherein the first substrate and the second substrate are manufactured by additive manufacturing.

6 . An aircraft comprising at least one power module according to claim 1 .

7 . The electrical power supply circuit according to claim 1 , wherein the first substrate and the second substrate are manufactured by additive manufacturing.

8 . The electrical power supply circuit according to claim 2 , wherein the first substrate and the second substrate are manufactured by additive manufacturing.

9 . The electrical power supply circuit according to claim 3 , wherein the first substrate and the second substrate are manufactured by additive manufacturing.

10 . The electrical power supply circuit according to claim 5 , wherein the first substrate and the second substrate are manufactured by additive manufacturing.