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The rapid advancement of artificial intelligence (AI) has ushered in a new era of high-density computing demands, rendering traditional power supply architectures increasingly inadequate to meet this evolving requirement. To better address such needs, Analog Devices, Inc. (ADI) has introduced innovative solutions that provide robust support for the next generation of 800 VDC architectures in data centres. This suite of solutions comprises highly reliable hot-swappable and primary power products designed to deliver secure, efficient, and intelligent power distribution, precisely meeting the power supply requirements of modern AI factory systems.

Why the 800 V architecture?

Data centres are transitioning from traditional 12 V or 48 V systems to 800 V architectures primarily to achieve significant energy efficiency gains. Faced with the high power demands of AI clusters, elevating the voltage to 800 V enables a quantum leap in computing cluster density, with rack power densities potentially reaching or exceeding 1 MW.

Todd Sherman, General Manager of ADI's High Voltage and Protection Business, stated: ‘ADI is proud to drive the advancement of 800 V high-voltage data centre architecture technology. ADI leads in hot-swap controller solutions, which have become indispensable critical components for safeguarding next-generation AI systems.’

ADI Hot-Swap Controllers: Safeguarding High-Power Systems

The core function of hot-swap controller ICs is to protect systems from threats posed by sudden power supply fluctuations while ensuring continuous, stable operation. Within AI factories, these controllers play a particularly critical role – effectively managing inrush currents during system startup, faults, or maintenance to establish robust safety defences for high-voltage power systems.

Leveraging proven chip technology and extensive expertise in high-voltage analogue design, ADI leads in delivering critical protection mechanisms for systems.

ADI's 800 V Series solutions enable the following core safeguards:

Controlled power-up for AI racks: Effectively suppresses current spikes during rack insertion, preventing damage to downstream converters.

Real-time fault detection: Supports precise telemetry monitoring and system diagnostics while ensuring safe operation during faults.

99.99% redundancy and resilience: This capability is critical for maintaining continuous operation in AI factories running 24/7.

Practical Application of the 800 V Architecture

Upon stable connection of the 800 V power supply to the rack, it must first undergo step-down conversion to an intermediate voltage (typically 48 V or lower), followed by local voltage regulation to supply processors, GPUs, and accelerators.

ADI's Tier 1 data centre interconnect power conversion solution is projected to deliver the following core performance metrics:

High-efficiency voltage regulation: Achieving conversion efficiencies exceeding 98% under heavy load conditions

Digital power control and telemetry interfaces: Enabling NVIDIA Intelligent Platform Management

Scalable modules: Designed to support rapidly evolving rack-level architectures and power densities

Consequently, a highly efficient and rigorously monitored power path will be established from grid input to GPU power interfaces. This is critical for data centres, where every kilowatt-hour consumed and every millisecond of latency carries significant implications.

Collaborating to Accelerate the AI Era

AI infrastructure constitutes an integrated system of hardware and software. By combining optimised computing, connectivity, power delivery, and thermal management technologies with specialised software spanning cloud to edge, it significantly enhances the deployment efficiency and operational effectiveness of advanced AI systems. This infrastructure enables enterprises to establish secure, reliable ‘AI factories’: effectively managing the entire AI lifecycle—from data acquisition and model training to large-scale inference—to transform data into valuable outcomes. NVIDIA's 800 VDC data centre power architecture not only addresses current rack requirements but also ensures the AI infrastructure within AI factories possesses future-proof adaptability. The transition to high-power architectures necessitates redesigned power delivery solutions, with ADI playing a pivotal role in this transformation.

As NVIDIA expands its platform to major cloud service providers, ADI continues to support the development of the underlying infrastructure, thereby propelling the ongoing advancement of AI.