Infineon offers a comprehensive portfolio of semiconductor solutions tailored to battery backup units (BBUs) and capacitor bank units (CBUs) in AI data centers. Our technologies enable efficient, reliable, and scalable power conversion, supporting backup power and short-duration energy buffering to enhance system resilience and power stability.

As AI data centers evolve toward higher power densities and increasingly dynamic workloads, BBUs play a critical role in providing reliable ride-through power during supply interruptions, while CBUs can help manage short-duration power peaks and rapid load fluctuations.

Infineon's PPC-based BBU solutions combine scalable power conversion, high efficiency, and advanced digital control to support today's low-voltage AI server racks. Our technology roadmap also addresses emerging 800 V DC architectures, supporting the evolving power requirements of next-generation AI data centers.

Why do battery backup and capacitor bank units matter for AI data centers?

AI data centers require reliable and stable power to support increasingly demanding computing workloads. As rack power density and dynamic power demands continue to increase, effective backup power and energy buffering solutions become essential to maintaining system resilience and power stability.

  • Battery Backup Units (BBUs) provide reliable backup power and ride-through capability during power interruptions. Depending on battery capacity and system load, they help maintain critical operations for a defined duration or support controlled system shutdowns.
  • Capacitor Bank Units (CBUs) provide short-duration energy buffering to manage rapid load fluctuations and peak-power demands from AI processors and GPUs. They can help reduce transient stress on power supply units (PSUs) and upstream power distribution infrastructure.
data center

Depending on system architecture and power requirements, BBUs and CBUs may be deployed separately or in combination to provide backup power, short-duration energy buffering, and enhanced power stability for AI data centers. Together, when deployed appropriately, they enhance power resilience, improve power stability, and support the evolving requirements of high-density AI data centers.

Explore Infineon's Server Battery Backup Unit (BBU) solutions

To see how these capabilities are translated into a deployable solution with an interactive block diagram, visit our application solution page for server battery backup units (BBU). 

Visit application solution page

Battery Backup and Capacitor Bank units reference designs leveraging Si, SiC and GaN power semiconductors

Infineon’s Innovative BBU system solutions leverage system expertise and IP to deliver industry-leading performance and efficiency. By leveraging both Silicon (Si), Silicon Carbide (SiC) and Gallium Nitride (GaN) devices - and selecting topologies for each power tier - the design achieves high efficiency, compact size, and robust control for AI racks.

To further demonstrate the capabilities of our semiconductor solutions, we are building complete system demonstrators for battery backup units and capacitor bank units, showcasing the advantages of our portfolio in real-world applications. These demonstrators will highlight the benefits of our products in terms of efficiency, reliability, and scalability, providing a clear path forward for the development of next-generation AI datacenters.

Battery back-up unit roadmap

Designing for efficiency: innovative BBU and CBU solutions for MV and HV architectures

System features
  • Infineon proprietary topology
  • Continuous power flow
  • Lower voltage rating components
Customer benefits
  • Power scalability
  • Low input and output ripple
  • Ultra high efficiency and power density

System features

  • Full system solution (scalable from 4.2 kW to 25 kW)
  • Full-GaN solution for increased efficiency and power density

Customer benefits

  • OCP v3 compliant
  • Best-in-class efficiency (≥ 99.7%) and power density (≥ 1 KW/in3)
  • High efficiency to meet challenging thermal environments
  • 4SW Buck and Boost (25 kW Gan based) 

Highlight products

  • PSOC™ Control C3 P8 (3 core) MCU
  •  CoolGaN™ 100 V G5 transistors
  • EICEDRIVER™ 2EDL5014 
System features
  • Infineon proprietary topology
  • SiC-based multilevel design
  • Charger and discharger blocks share EMI filter, capacitors
    and protection MOSFETs
Customer benefits
  • High power density (450 W/in3), enabled by magnetic integration
  • High efficiency (>99%)
  • Higher reliability via multilevel topology w/o flying capacitors
Highlight products
System features
  • Infineon proprietary topology
  • Continuous power flow
  • Lower voltage rating components
Customer benefits
  • Power scalability
  • Low input and output ripple
  • Ultra high efficiency and power density

System features

  • Full system solution (scalable from 4.2 kW to 25 kW)
  • Full-GaN solution for increased efficiency and power density

Customer benefits

  • OCP v3 compliant
  • Best-in-class efficiency (≥ 99.7%) and power density (≥ 1 KW/in3)
  • High efficiency to meet challenging thermal environments
  • 4SW Buck and Boost (25 kW Gan based) 

Highlight products

  • PSOC™ Control C3 P8 (3 core) MCU
  •  CoolGaN™ 100 V G5 transistors
  • EICEDRIVER™ 2EDL5014 
System features
  • Infineon proprietary topology
  • SiC-based multilevel design
  • Charger and discharger blocks share EMI filter, capacitors
    and protection MOSFETs
Customer benefits
  • High power density (450 W/in3), enabled by magnetic integration
  • High efficiency (>99%)
  • Higher reliability via multilevel topology w/o flying capacitors
Highlight products
Documents

Information hub: Find out more about Infineon's battery backup solutions

Webinar: Battery backup units for uninterrupted AI operations

Infineon mitigates the key challenges posed to battery backup units by AI workloads in modern data centers and explores trends, solutions, and the topologies that fit this application. The session then delves into Infineon’s Partial Power Converter (PPC) technology and showcases system demonstrators to help optimize performance and efficiency. 

To learn more, watch our latest webinar on-demand.

The Future of Powering AI

Efficient and sustainable power is the heart of AI's future. By tackling the soaring power demands and providing advanced semiconductors solutions for data centers from the grid down to the processor's core, Infineon is driving a transformative shift toward efficiency and performance, enabling a sustainable AI-powered tomorrow.

Register now to download the full whitepaper.

High-efficiency BBUs with Infineon’s innovative DP-CF-SUSD topology

Infineon explores on this whitepaper the architecture and challenges of BBUs, focusing on the DP-CF-SUSD circuit and its ability to provide fast and stable power delivery. It is highlighted how Infineon’s advanced MOSFETs and related technologies enable scalable, efficient, and reliable BBU designs, ensuring data centers meet the ever-growing demands of the digital economy. By combining detailed technical insights with practical comparison, this paper provides a pathway for designing next-generation BBUs that are tailored to the critical needs of modern data centers.

Register now to download the full whitepaper.
Press release: Infineon advances Powering AI roadmap
airoc-cyw43xxx.png

Infineon addresses the market with the “Powering AI” roadmap for battery backup units in AI data centers, highlighting scalable solutions from 4 kW to 12 kW and a modular approach that parallels 4 kW cards to meet higher rack envelopes.

The program emphasizes efficiency, reliability, and power density improvements with PPC-based designs across Silicon and GaN device technologies. Find out more about the updates on Powering AI roadmap on our press release.

Read the press release
Market news: Industry-first 24 kW SiC-based BBU reference design for HV DC
airoc-cyw43xxx.png

Infineon launches industry-first battery backup unit DC-DC reference design for high voltage DC bus architectures in AI data centers. The design is the first of its kind to operate directly from a battery stack to an 800 V DC bus, using SiC technology to deliver a power density of 450 W/in³ and efficiency exceeding 99%.

Read the market news

We Power AI Podcast: The best way to protect your AI operations with battery backup unit technology

Ensuring AI Uptime: The Crucial Role of Battery Backup Units

In this video, we delve into the vital importance of battery backup units in maintaining the smooth operation of AI servers, even when power outages occur. Join us as we sit down with Filippo Rosetti, Application Marketing Manager at Infineon, to discuss effective battery backup hardware strategies that guarantee uninterrupted power supply to AI systems.

From ensuring process continuity to seamless power switchover, we'll explore the significance of reliable battery systems in powering AI. Don't miss this insightful conversation on the critical role of battery backup units in keeping AI servers running smoothly.

Listen to our expert episodes

Webinar: Battery backup units for uninterrupted AI operations

Infineon mitigates the key challenges posed to battery backup units by AI workloads in modern data centers and explores trends, solutions, and the topologies that fit this application. The session then delves into Infineon’s Partial Power Converter (PPC) technology and showcases system demonstrators to help optimize performance and efficiency. 

To learn more, watch our latest webinar on-demand.

The Future of Powering AI

Efficient and sustainable power is the heart of AI's future. By tackling the soaring power demands and providing advanced semiconductors solutions for data centers from the grid down to the processor's core, Infineon is driving a transformative shift toward efficiency and performance, enabling a sustainable AI-powered tomorrow.

Register now to download the full whitepaper.

High-efficiency BBUs with Infineon’s innovative DP-CF-SUSD topology

Infineon explores on this whitepaper the architecture and challenges of BBUs, focusing on the DP-CF-SUSD circuit and its ability to provide fast and stable power delivery. It is highlighted how Infineon’s advanced MOSFETs and related technologies enable scalable, efficient, and reliable BBU designs, ensuring data centers meet the ever-growing demands of the digital economy. By combining detailed technical insights with practical comparison, this paper provides a pathway for designing next-generation BBUs that are tailored to the critical needs of modern data centers.

Register now to download the full whitepaper.
Press release: Infineon advances Powering AI roadmap
airoc-cyw43xxx.png

Infineon addresses the market with the “Powering AI” roadmap for battery backup units in AI data centers, highlighting scalable solutions from 4 kW to 12 kW and a modular approach that parallels 4 kW cards to meet higher rack envelopes.

The program emphasizes efficiency, reliability, and power density improvements with PPC-based designs across Silicon and GaN device technologies. Find out more about the updates on Powering AI roadmap on our press release.

Read the press release
Market news: Industry-first 24 kW SiC-based BBU reference design for HV DC
airoc-cyw43xxx.png

Infineon launches industry-first battery backup unit DC-DC reference design for high voltage DC bus architectures in AI data centers. The design is the first of its kind to operate directly from a battery stack to an 800 V DC bus, using SiC technology to deliver a power density of 450 W/in³ and efficiency exceeding 99%.

Read the market news

We Power AI Podcast: The best way to protect your AI operations with battery backup unit technology

Ensuring AI Uptime: The Crucial Role of Battery Backup Units

In this video, we delve into the vital importance of battery backup units in maintaining the smooth operation of AI servers, even when power outages occur. Join us as we sit down with Filippo Rosetti, Application Marketing Manager at Infineon, to discuss effective battery backup hardware strategies that guarantee uninterrupted power supply to AI systems.

From ensuring process continuity to seamless power switchover, we'll explore the significance of reliable battery systems in powering AI. Don't miss this insightful conversation on the critical role of battery backup units in keeping AI servers running smoothly.

Listen to our expert episodes