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Power Supply for AI Server

AI servers require advanced power architectures capable of supporting the massive processing demands of GPUs, AI accelerators, and high-performance CPUs used for machine learning, cloud computing, and large-scale data processing. These systems require stable, efficient, and fast power delivery to maintain performance while minimizing energy loss and thermal generation in increasingly dense server environments. Servers utilize technologies and system implementations such as Vertical Power Delivery, Intermediate Bus Converters, and high-efficiency, multi-phase DC to DC Converters that provide precise voltage regulation closer to the processor while supporting higher power density and rapidly changing workloads.

As server rack power requirements continue to increase, next-generation data center infrastructure is also exploring higher-voltage distribution systems and Solid State Transformer technologies to improve overall energy efficiency, scalability, and thermal management. These evolving architectures require highly reliable passive components capable of operating continuously under demanding electrical and thermal conditions. 

Capacitors to support AI Power Supplies should have the following characteristics:

  • High Capacitance
  • High Ripple Current
  • Low ESR
  • Long Life
  • High Voltage
  • Low Profile

Here are some examples of suggestions from our product lineup.

(Please contact us for further details.)

Recommended Series

PCA

The PCA series features highly reliable capacitors with high ripple current, low ESR and a long life of 4,000 hours at 125°C.
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PCR

The highly reliable PCR series features low ESR, high ripple current, and a long operational life available in high capacitance and high voltage options.
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GYA

The GYA series features high reliability, low ESR, and high ripple current suitable for automotive applications, including ECUs, pump controls, telematics, and LED headlights.
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UBR

Designed with the needs of communication base stations in mind, UBR series is long lasting, heat resistant, and rated for high voltage (450V).
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Miniature Aluminum Electrolytic Capacitor for High Reliability - UCY

UCY

Ideal for power supply and lighting applications, the UCY series offers a long lifespan of 10,000 to 12,000 hours at 105°C in a smaller package than the UCS series.
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LGM

One step smaller than the LGL series, the LGM series are ultra-small capacitors suited for equipment downsizing in applications such as electric rail equipment, and power electronics applications.
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LGN

The LGN series capacitors can withstand 3,000 hours of rated ripple current at 105°C, operating over a temperature range of -40°C to 105°C (160 V to 250 V) or -25°C to 105°C (350 V to 600 V).
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LGW

LGW series is designed for high ripple current applications, including transformers, smart grids, servo systems, electric rail equipment, and lighting.
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Features

Long Life and High Reliability
Capacitors designed for long operating lifespans are crucial for genAI applications, where components are difficult to replace. Nichicon’s PCA series of chip-type conductive polymer aluminum solid electrolytic capacitors is guaranteed to last 4,000 hours with ripple current applied, while the PCM series is rated to last 8,000 hours under DC.
Low ESR
AI servers demand capacitors with low ESR for input and output to limit power losses and heat dissipation. Nichicon designs and manufactures a range of low-ESR capacitors suited for use in genAI stacks. 
Compact Size
Nichicon produces capacitors with low profiles and high capacitance, crucial for maintaining voltage stability while handling the high currents used by AI processors without sacrificing on PCB area. 
High Capacitance
AI server power systems require large amounts of stable energy storage to support rapidly changing processor and GPU power demands. Nichicon high capacitance capacitors help improve power stability, reduce voltage fluctuations, and support high-density power architectures used in advanced AI server and data center applications.
High Temperature Resistance
AI server power systems generate significant heat due to high current loads and dense system designs, making thermal reliability critical for long-term operation. Nichicon capacitors designed for high-temperature performance help maintain stable electrical characteristics and long operational life in demanding 24/7 AI server and data center environments
High Voltage
AI server and data center power architectures are increasingly adopting higher voltage distribution systems to improve efficiency and reduce power loss across the system. Nichicon high voltage capacitors support these demanding applications with reliable performance, stable operation, and efficient energy handling for next-generation AI server power designs.

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