Patent ID: 11923778
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 primary winding of the transformer;
a secondary switch electrically connected to the secondary winding of the transformer;
a primary controller configured for controlling the primary switch to turn on and off, and comprising:
a primary driver configured to generate a primary control signal for controlling the primary switch;
an oscillator configured to continually generate a carrier wave; and
a modulator configured to:
receive the carrier wave from the oscillator and the primary control signal from the primary driver; and
modulate the carrier wave based on the primary control signal to generate a synchronization signal;

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;
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 the synchronization signal from the primary controller to the secondary 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.