140W fast-charger size reduced by 50%

18-08-2022 | GaN Systems | Power

GaN Systems offers a new turnkey 140W AC/DC charger reference design with USB PD3.1, Single Port Type-C Output. Compared to silicon-based chargers, this design is 50% smaller and 40% lighter, providing an ultra-high-power density of 23W/in3. This design adds to its portfolio (65W, 100W, 140W, 250W) of turnkey charger solutions for the consumer electronics market, providing faster design cycles and continuing the roll-out of lighter, smaller, and more powerful and efficient chargers.

This new charger is a total turnkey solution and incorporates comprehensive documentation of the fully assembled and tested charger. This best-in-class fast-charger provides a cost-effective, high-frequency, two-stage power topology with Bridgeless Totem Pole PFC and a Dual Switch QR Flyback topology. It uses GaN Systems’ 5mm x 6mm PDFN packaged GS-065-011-1-L power transistor, producing a cost-effective, reduced component count and easily customised GaN charger.

“Notebooks and laptops are an increasingly essential part of our personal and professional lives, and as a result, demands for portability and mobility continue to increase,” said Paul Wiener, VP of Strategic Marketing at GaN Systems. “As the workspace definition continues to favour a hybrid model, from office to home, to café and beyond, we want lighter and smaller devices – and chargers have struggled to keep pace. GaN Systems is committed to making GaN easy to use, and the new 140W GaN charger design is another example of this commitment.”

GaN transistors enable chargers to function more efficiently, offering significantly less power loss and heat. This allows the system components to be smaller and closer together, providing smaller, sleeker chargers with more power than larger models. The company's transistors can be switched at high frequency with maximum efficiency and power density, making them excellent for charging applications.


By Seb Springall