AI Data Center

Why AI Computing Demands a New Power Architecture

AI computing has fundamentally changed power delivery. Modern AI server racks now exceed 100kW per rack, with GPU clusters demanding hundreds to thousands of amperes at ever-increasing switching frequencies. As AIDC evolves from 48V toward ±400V and 800V HVDC architectures, conventional power interconnect solutions are no longer sufficient.

The core challenge: next-generation SiC/GaN devices switch at extreme di/dt, and even small parasitic loop inductance produces damaging voltage spikes:

V_spike = L_loop × (di/dt)

Traditional cables and solid busbars typically exhibit inductance above 100nH — enough to cause device breakdown, EMI degradation, and efficiency loss. This is why laminated busbars have become the core power interconnect component in AI servers, AIDC data centers, and HPC systems.

Where Laminated Busbars Are Used in AI Systems

Four Core Values for AI Power Systems

1. Ultra-Low Stray Inductance

By arranging positive and negative conductors in close parallel opposition, laminated busbars cancel opposing magnetic fields — reducing loop inductance from >100nH to the nH range. This protects SiC/GaN devices, unlocks high-frequency switching advantages, and improves overall efficiency.

2. High Current + Low Thermal Resistance

Flat, wide-area conductors deliver high current capacity with controlled temperature rise. The planar structure enables efficient heatsink attachment — eliminating the localized hotspots common in wire harnesses.

3. High Integration, Less Rack Space

Multiple power layers integrated into one flat busbar replace bundles of cables, reducing assembly space and bolted connection points. Fewer connections mean lower risk of loosening and improved long-term reliability.

4. Superior EMI Suppression

Opposing magnetic fields naturally suppress high-frequency electromagnetic noise, reducing interference with GPUs and high-speed signal links.

Technology Trends Shaping AI Busbar Design

Higher Voltage — 48V → ±400V → 800V HVDC, driving more demanding insulation and partial discharge design

Extreme Low Inductance — busbar and power device/capacitor co-simulation (Q3D / multiphysics)

Higher Integration — integrated temperature sensing and current sampling for real-time monitoring

Advanced Materials — thin copper layers, high-performance PI films, laser-welded terminals

Looking for Detailed Specifications?

For complete technical parameters — including electrical ratings, insulation and PD requirements, mechanical design, and SiC/GaN-friendly design details — please refer to our technical specification:

[Laminated Busbars for Data Center Power Distribution→] 

Partner with A&JLINK

From multiphysics simulation to prototype and volume production, A&JLINK provides one-stop laminated busbar solutions for AI servers, AIDC data centers, and HPC power systems.

[Contact us →] to discuss your AI power distribution requirements.