GaN ICs from Navitas shrink power adapters for TVs and laptops

Navitas Semiconductor offers a 150W AC/DC reference design using the company’s gallium nitride (GaN) power integrated circuits (ICs). Providing over 21W/in³ and over 95 per cent efficiency, the NVE021A is more than 2x smaller than typical commercial designs, says Navitas, and 40 per cent smaller than the previous best-in-class device.

The design of the NVE021A can be adapted over a power range of 85 to 500W to enable converters for ultra-thin light emitting diode (LED) TVs, fast-charging laptop adapters, high-density gaming systems, all-in-one personal computers (PCs) and any other systems seeking high-density or high efficiency power solutions.

Navitas GaN power ICs enable high-frequency switching, which shrinks passive components. Soft-switching critical conduction mode (CrCM) power factor correction (PFC) and LLC DC/DC stages operate at working frequencies up to 300kHz (600kHz during start-up, burst mode), claimed to be the fastest-possible speed provided by an off-the-shelf controller IC available today.

The NVE021A reference design (150W, AC to 12V DC) is immediately available from Navitas. It includes a user guide / test report with all schematic and layout design files, and bill of material.

The reference design is the first in a series designed to demonstrate how GaN power ICs can increase frequencies five times or more with efficiencies of 95 per cent, enabling a three to five times increase in power densities for AC/DC applications.

Navitas Semiconductor is the world’s first GaN power IC company, founded in 2013 with a team of experts in materials, devices, applications and systems. There are over 200 patents held by its founders. The proprietary AllGaN process design kit monolithically integrates the highest performance GaN field effect transistors (FETs) with logic and analogue circuits. The company’s GaN power ICs enable smaller, higher energy efficient and lower cost power for mobile, consumer, enterprise and new energy markets. There are over 30 Navitas patents granted or pending.


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