Navitas GaN Power ICs Enable World’s Smallest 65W USB-PD Laptop Adapter

Finally, a laptop adapter is thin and light – like the laptop it charges – and at a great price

Navitas Semiconductor today announced the world’s smallest 65W USB-PD (Type C) adapter reference design, to keep pace with the dramatic size and weight reductions in laptop designs over the last 10 years. High-frequency, high-efficiency AllGaNTM Power ICs are used to deliver 65W in only 45cc / 2.7in3 and only 60g in weight by minimizing the size, weight and cost of transformers, filters and heatsinks. By contract, existing silicon-based designs can require 6-7in3 and weigh over 300g.

“Finally, a laptop adapter is thin and light – like the laptop it charges – and at a great price”, said Stephen Oliver, the company’s vice president of Sales & Marketing. “Power designers have been faced with several, conflicting industry challenges, from new USB Type C connectivity and USB PD (Power Delivery) output compliance to statutory energy efficiency standards and the ever-present issue of cost. Navitas GaN Power ICs deliver the simultaneous achievements of high-speed operation and high efficiency to enable a single system design that meets all of those challenges – at the same or lower cost than old, slow silicon designs”.

The new NVE028A reference design uses GaN Power ICs in an in an active clamp flyback (ACF) topology running 3x-4x faster and with 40% lower loss than typical adapter designs, to deliver smaller size and reduced costs. The design is fully compliant with European CoC Tier 2 and US DoE Level VI efficiency standards, in addition to reaching peak efficiencies of over 94% at full load.

“This is a major achievement in adapter design”, said Mark Dehong Xu, President of the China Power Supply Society (CPSS)…

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