Patent ID: 11916488
Assignee: INNOSCIENCE (SUZHOU) TECHNOLOGY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A GaN-based power converter comprising:
a transformer having a transformer primary winding and a transformer secondary winding;
a primary switch electrically connected to the transformer primary winding;
a secondary switch electrically connected to the transformer secondary winding;
a primary controller configured for controlling the primary switch to turn on and off;
a secondary controller configured for controlling the secondary switch to turn on and off;
a coupler having a coupler primary winding electrically connected to the primary controller and a coupler secondary winding electrically connected to the secondary controller; and
a multi-layered printed circuit board (PCB) comprising:
one or more planar coils respectively formed on one or more PCB layers and aligned with each other for constructing the transformer and the coupler; and
a plurality of conducting traces and vias for providing electrical connection among the transformer, the coupler, the primary switch, the secondary switch, the primary controller and the secondary controller;

a pair of ferrite cores being fixed to a top surface and a bottom surface of the PCB respectively and commonly shared by the transformer and the coupler;
wherein the transformer is configured to transfer power by switching on and off the primary switch and the secondary switch at a switching frequency;
the coupler is configured to transfer a synchronization signal from the secondary controller to the primary controller such that the primary switch and the secondary switch are turned on and off alternately to ensure proper functioning of the transformer; and
the synchronization signal transferred by the coupler has a carrier frequency different from the switching frequency.