Patent ID: 11916005
Assignee: INNOSCIENCE (SUZHOU) TECHNOLOGY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A multi-functional printed circuit board (PCB) for assembling a plurality of components of a GaN-based power converter in to a single package, comprising:
a built-in transformer comprising a transformer primary winding and a transformer secondary winding;
a built-in coupler comprising a coupler primary winding and a coupler secondary winding; and
a plurality of conductive traces and conductive vias for providing electrical connection among the built-in transformer, the built-in coupler and the plurality of components;, wherein
each of the transformer primary winding, the transformer secondary winding, the coupler primary winding and the coupler secondary winding is constructed with one or more planar conductive coils respectively formed on one or more PCB layers;
the one or more PCB layers are stacked and the one or more planar conductive coils are aligned with each other such that the built-in transformer and the built-in coupler can share a common pair of ferrite cores;
the built-in transformer is configured to transfer power by switching on and off a primary switch connected to the transformer primary winding and a secondary switch connected to the transformer secondary winding at a switching frequency;
the built-in coupler is configured to transfer a synchronization signal from a primary-side controller configured to control the switching on and off of the primary switch to a secondary-side controller configured to control the switching on and off of the secondary switch such that the secondary-side controller can be synchronized with the primary-side controller so as to ensure that the primary switch and the secondary switch turn on and off alternately; and
the synchronization signal transferred by the built-in coupler has a carrier frequency different from the switching frequency of the built-in transformer.