EPC starts mass production of 18 V GaN FET for AI power systems

Efficient Power Conversion has begun mass production of the EPC2370, an 18 V eGaN FET built for next-generation AI server power supplies. The device targets higher efficiency and power density as AI power architectures move to 800 VDC distribution and 1 MHz intermediate bus converters.

Why it matters: - The EPC2370 is aimed at AI server power designs that need higher efficiency, smaller converter size and stronger thermal performance. - EPC says the device supports the shift toward 800 VDC power distribution and 1 MHz intermediate bus converters in next-generation AI infrastructure. - The part’s 22 V transient rating lets designers replace MOSFETs rated as high as 25 V.

What happened: - Efficient Power Conversion announced mass production of the EPC2370, an 18 V eGaN FET for high-current DC-DC power conversion. - The company says the device is now available through its global distribution network, including Digi-Key and Mouser. - EPC also introduced the EPC90168 evaluation board to speed testing and design work.

The details: - The EPC2370 is built on EPC’s seventh-generation GaN platform. - The device carries a 101 A continuous current rating, 0.28 mΩ typical Rdson, 26 nC gate charge and ultra-low switching losses. - The package is a 3.3 mm × 3.3 mm thermally enhanced, dual-side-cooled PQFN. - EPC says the part is optimized for center-tapped synchronous rectification in 48 V-to-6 V and 800 V-to-6 V converters. - The 18 V continuous rating and 22 V transient rating are designed to provide voltage margin for reliable operation. - EPC says the EPC2370 can enable peak efficiencies of 98% and full-load efficiencies of 97% in high-density power modules. - The device is also positioned for high-current DC-DC converters in high-performance computing, telecommunications infrastructure and advanced industrial power systems. - The EPC90168 evaluation board measures 2" × 2" and uses two EPC2370 GaN FETs in a half-bridge configuration. - The board includes critical components, an optimized layout and multiple probe points for waveform and efficiency measurements. - EPC says the EPC2370 is available in 1,000-piece quantities for US$ 2.52 each. - The EPC90168 evaluation board costs $260.

Between the lines: - EPC is pushing the EPC2370 as part of a broader GaN portfolio for AI power conversion, including recently released primary-side devices EPC2305, EPC2367 and EPC2361. - Jason Zhang, EPC’s vice president of DC-DC marketing and system engineering, said the device was developed for 6 V output, high-current synchronous rectification where a low R × Q figure of merit matters. - The focus on low on-resistance, low gate charge and high current points to a race in AI power design to reduce losses as rack-level power demand rises.

What's next: - EPC said production is ramping to meet demand from AI computing, server power supplies, telecommunications infrastructure, industrial systems and other low-voltage power applications. - The evaluation board gives customers a path to benchmark switching performance before moving into product development. - Broader adoption will likely depend on how quickly AI power architectures standardize around higher-voltage distribution and dense DC-DC stages.

The bottom line: - EPC is betting that GaN can win more of the AI power stack by delivering higher efficiency and power density in high-current 6 V conversion stages.