300-W AC adapter reference design targets a wide application range

By Gina Roos, editor-in-chief

GaN Systems and ON Semiconductor have claimed the industry’s highest-power-density 300-W AC adapter reference design using GaN Systems’ 650-V, 15-A  GaN E-HEMTs and ON Semiconductor’s controller and driver ICs, including the NCP51820, NCP13992, NCP1616, and NCP4306 .

The low-cost reference design  enables designers to develop ultra-high-power-density adapters for a variety of applications in HDTV power supplies, gaming notebook, and console adapters, as well as ultra-small power supplies for industrial and medical devices.

The kit includes schematics, PCB layout, bill of material (BOM) files, and EMI and efficiency data. The kit hardware provides complete PFC, LLC, and secondary stages and features a high-efficiency synchronous PFC that meets the CoC T2 benchmark, a low-cost two-layer design, and universal input with 19-V output at 340 W peak. System designers can reach power densities up to 32 W/in.³ with the new reference design.