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Overview
The 48V bus is widely adopted in communications, new energy vehicles, humanoid robots, and data centers. Compared to traditional 12V bus architectures, the 48V bus can deliver four times the output power at the same current, meeting growing power demands while significantly reducing line losses during power distribution. Relative to conventional Si MOSFETs, GaN's high-frequency and high-efficiency properties substantially boost the efficiency and power density of 48V DC-DC power supplies, offering revolutionary power solutions for telecommunications, automotive, and data center applications.
Reference Designs
2kW 48V Four-Phase Buck Power Solution with Dual Coupled Inductors
This 2kW buck power solution leverages the high-frequency and high-efficiency advantages of GaN and a four-phase interleaved Buck topology to achieve a compact, high-power-density design. It incorporates the ultra-small GaN half-bridge driver IC INS2002 and the double-sided cooling low-voltage GaN device INN100EA035A, achieving up to 98% efficiency. The power section occupies only one-fifth the area of a smartphone (iPhone 15).
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