Trio introduce 4kW GaN power supply reference design

Arrow Electronics, working with franchised suppliers Nexperia and Yageo, has completed an AC/DC power supply reference design to introduce GaN efficiency and power density advantages in applications up to 4kW. The three companies combined design resources to conceptualise and develop the schematic, with selected components from Nexperia and Yageo. The reference design is available now with supporting documentation including bill of materials.

Customers can integrate the GaN-based power supply directly in their own products and modify if needed. Typical applications include solar and wind energy conversion, industrial robots, HVAC equipment, fluid pumps, ATM machines and general industrial automation and power supplies, including uninterrupted power supplies. It has a compact form factor, making it suitable for use in e-bikes, power tools and professional audio equipment.

Vitali Damasevich, director engineering – Eastern Europe and engineering solutions centre, EMEA for Arrow Electronics, said: “By leveraging the latest GaN FETs and customised passive components, we have achieved a significant increase in efficiency, power density, and device miniaturisation over traditional silicon-MOSFET-based solutions.

“In addition to supplying the reference design, we can also help customers to develop their own highly efficient [power supplies], as well as integrate the solution in their applications for optimal form, fit and function.”

Arrow selected the latest GAN039-650NTB GaN power transistors from Nexperia and worked with Yageo to develop specifications for the flyback transformer and resonant circuit inductor. The GAN039-650NTB power GaN FET has fast and tightly controlled turn-on / turn-off times and low RDS(on). It is housed in a thermally efficient copper-clip surface mount package with top-side cooling. The design, said Arrow ensures high reliability and low operating temperatures with simplified thermal management.

The flyback transformer from Yageo is a custom design with two isolated outputs that provides auxiliary supplies for the power supply control ICs and gate drivers in a small form factor. The LLC inductor is specially designed with 500kHz working frequency, 48V operating voltage and 80A current rating.

Samples will be available during the second half of 2023.  

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