Navitas Semiconductor Introduces Reference Design for 65W Adaptor

Navitas Semiconductor of El Segundo, California USA, announced what the company claims to be the smallest 65W USB-PD (Type C) adapter reference design. The reference design employs high-frequency, high-efficiency AllGaNTM Power ICs to deliver 65W.Navitas says that because the design minimizes the size, and weight of transformers.

Navitas Semiconductor 65W power adapter reference design compared to conventional power adaptors

Navitas Semiconductor 65W power adapter reference design compared to conventional power adaptors

Navitas says that because the design minimizes the size, and weight of transformers, filters and heatsinks, in total it measures just 45 cc (2.7 inch3) and weighs just 60g. In contrast, existing silicon-based designs can require 6-7in3 (about 98-115 cm 3) and weigh over 300g. Also, the design boasts breakthrough power density of (1.5 W/cc, 24 W/in3 cased).

The new NVE028A reference design leverages GaN Power ICs in an in an active clamp flyback (ACF) topology. The reference design reportedly runs 3x-4x faster and operates with 40% lower loss than typical adapter designs.

Navitas Semiconductor Reduced Overall Costs in Reference Design

Additionally, the company says it reduced the overall costs through lessening the cost of its transformers, filters, and heatsinks and using simple, standard, low-cost manufacturing methods. The design complies fully with European CoC Tier 2 and US DoE Level VI efficiency standards. In addition, at full load, it reaches peak efficiencies of over 94%.

Stephen Oliver, the company’s vice president of Sales & Marketing, commented, “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.”

“Since we introduced the AllGaN platform at APEC’16, Navitas has announced single and half-bridge GaN Power ICs, the world’s smallest 150W adapter, and now the world’s smallest, fully-compliant 65W USB-PD design,” said Gene Sheridan, Navitas CEO.