Design and Performance Analysis of High Density Universal Charger featuring GaN based Integrated Power Stage

With the demand for higher power and lighter charger/adapters significantly increasing, the application of GaN solutions in this space is equally growing. One of the GaN solutions is the Integrated Power Stage (IPS) which is based on a System in Package (SiP) concept that includes driver and GaN power switch. In contrast to GaN discrete solutions, GaN IPS is very attractive for ≥ 45W to ≤ 1kW power supply applications as it further reduces the converter size, Bill Of Material (BOM) count, and enables ease-of-use while shortening the time to market. This paper reports the latest improvements achieved on a GaN IPS based 65W charger/adapter application demonstrator.