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FSP900M-60PJ

MedicalPC ATX

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Features

Meet 80 Plus Gold efficiency
Meet EN 55011 Class B
BF class isolation
High altitude 5000 M operation

Introduction

FSP900M-60PJ is a Medical ATX power supply. It offers a standard 1U form factor 240 x 100 x 41 mm, and a total power capacity of up to 900 Watts. This product meets EN 55011 class B emission limits and is suitable for imaging equipment such as CT, ultrasound, X-ray display, endoscopy, and other equipment.

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FSP900M-60PJ: 900W 1U medical ATX power supply, 80 PLUS Gold

FSP900M-60PJ is a 900 W, medical-grade ATX PSU in a true 1U chassis. It is designed for high-power medical devices and performance medical PCs/workstations, where compute density, airflow limits, and mechanical constraints must be balanced within a small enclosure.

With 80 PLUS Gold efficiency and a GPU-ready single +12V rail (up to 74.91A / 899W), it delivers stable power for imaging, visualization, and edge AI platforms. It also supports power excursion up to 200% for 100 μs to absorb short transient spikes from modern CPU/GPU workloads.

900W medical ATX power supply optimized for 1U high-density medical systems

FSP900M-60PJ at a Glance: Key Power and System Facts

900 W continuous output in a true 1U ATX form factor (240 × 100 × 41 mm)
Full ATX output rails: +12 V, +5 V, +3.3 V, −12 V, +5 Vsb per ATX12V specification
High-current +12 V rail: up to 74.91 A / 899 W, optimized for CPU/GPU platforms
Power excursion: up to 200% (100 µs) to absorb transient load spikes from AI and imaging applications
ATX12V v3.1 compliant; PCIe Gen 5 (12V-2x6) power cable available
80 PLUS Gold efficiency to reduce heat generation in space-constrained medical systems
Hold-up time: 17 ms min. @ 80% load (115VAC and 230VAC) for short mains dip ride-through
Medical safety isolation: 2 × MOPP (4,000 VAC input-to-output) and BF class isolation; touch current ≤100 μA @ 264VAC/63Hz
EMC: EN 55011 Class B (conducted & radiated) aligned with IEC 60601-1-2
Global AC input (90–264 VAC) and high-altitude operation up to 5,000 m

Need more technical details or a tailored configuration for FSP900M-60PJ? Send us your requirements and request a design-in recommendation.

FSP900M-60PJ: High +12 V Output with Stable Transient Performance for Medical ATX Systems

The FSP900M-60PJ is optimized for modern medical ATX systems where most power demand is on the +12 V rail. CPUs, GPUs, and PCIe devices draw primarily from +12 V, while lower-voltage rails support logic and control without limiting overall capability. Instead of spreading power evenly across multiple rails, the FSP900M-60PJ prioritizes high-current +12 V delivery to match real medical PC and workstation load profiles—simplifying system design, reducing rail balancing concerns, and supporting predictable behavior under compute-intensive imaging and AI workloads.

For rapid load transitions from AI inference, real-time imaging, and visualization—especially during GPU boost and parallel processing—the FSP900M-60PJ is designed to handle up to 200% power excursion for short-duration spikes to help maintain voltage stability without triggering protective shutdown.

Safety certifications and approvals of FSP900M-60PJ: UL, TÜV, CB, CE, and EMC

FSP900M-60PJ is built for global medical and AV/ITE design-in with a dual-safety approach. It is certified to IEC 60601-1 (medical safety), and IEC 62368-1 (AV/ITE safety), and the product page provides downloadable compliance files covering UL, TÜV, CB, CE, and EMC.

UL (North America): UL/cUL medical safety certificate file listed for the product
TÜV Rheinland (Germany/EU route): TÜV medical safety certificate file listed
CB Scheme (global): CB certificates listed for IEC 62368-1 and medical pathways to speed multi-country approvals
CE (EU): CE documentation file listed (multimedia equipment route)
EMC: EMC files listed for both multimedia/ITE and medical EMC categories

On EMC performance, FSP900M-60PJ is specified to meet EN 55011 Class B (conducted and radiated) and references IEC 60601-1-2 immunity performance, supporting deployment in sensitive clinical environments.

FSP900M-60PJ Optimized for Imaging Systems and AI-Enabled Medical PCs

Modern medical PCs integrate high-resolution imaging and local AI processing in compact, fixed enclosures, where power stability is a critical constraint. Designed for these architectures, the FSP900M-60PJ supports high compute density and predictable power behavior under tight mechanical and airflow limits, and allows up to 200% power excursion for short load spikes to keep voltage stable during transients without triggering protective shutdown.

Typical system scenarios include:

Medical imaging systems		PC-based platforms used for CT, ultrasound, X-ray, endoscopy, and image reconstruction, where GPUs and capture cards significantly increase +12 V power demand during active imaging and processing cycles. The system-level power challenges behind these imaging workloads are discussed in more detail in Medical-Grade ATX PSU for Imaging and Edge AI: What Matters.
AI-enabled medical PCs and workstations		Systems performing local AI inference for image enhancement, detection, and decision support, requiring stable power delivery under dynamic GPU load conditions without unexpected resets or throttling.
Point-of-care and clinical workstations		Compact workstations deployed in operating rooms, diagnostic labs, or mobile clinical environments, where 1U system height and limited airflow restrict thermal and mechanical design flexibility.

Need more technical details or a tailored configuration for FSP900M-60PJ? Send us your requirements and request a design-in recommendation.

Clinical medical environment with imaging and monitoring systems requiring stable 900W power delivery in compact 1U platforms

Case Example: FSP900M-60PJ in a Medical Edge AI Workstation with GPU + PCIe Expansion

A common real-world use case for FSP900M-60PJ is a medical edge AI workstation of Advantech that combines imaging capture and AI inference in a compact clinical platform. These systems must power Intel® Core™ i7/i9 (12th/13th/14th Gen) CPUs, a workstation-class GPU (e.g., NVIDIA RTX/A6000 class), and multiple PCIe add-in cards—while staying within 1U mechanical and airflow limits and meeting medical safety expectations.

In this architecture, FSP900M-60PJ enables higher compute density with controlled integration risk:

900W ATX12V v3.1 supply capacity for CPU+GPU platforms in true 1U space
High-current +12V delivery and ATX3.1 transient behavior to support GPU load steps without unexpected resets
PCIe expansion flexibility (x16/x8/x4) for dual capture cards and imaging I/O scalability
Medical-certified insulation (2 × MOPP & 2 × MOOP) to support regulated clinical deployment

Medical edge AI workstation demo using FSP900M-60PJ 900W ATX power supply with GPU and PCIe expansion cards

FAQ - learn more about FSP900M-60PJ

Q1: What continuous and transient power capability does the FSP900M-60PJ provide?

The FSP900M-60PJ delivers 900 W continuous output power in a true 1U medical ATX form factor.

It also supports up to 200% power excursion for 100 μs, enabling the power supply to handle short-duration load spikes from modern CPUs and GPUs without triggering protection or voltage instability. This makes it suitable for GPU-accelerated imaging and AI workloads.

Q2: What is the main output voltage and rail configuration of the FSP900M-60PJ?

The FSP900M-60PJ provides a full ATX output set, including +12 V, +5 V, +3.3 V, −12 V, and +5 Vsb rails.

The primary +12 V rail delivers up to 74.91 A, with 899 W available for CPUs, GPUs, and PCIe devices, aligning with modern compute-dominant medical PC architectures.

Q3: What efficiency level does the 1U ATX FSP900M-60PJ achieve?

The FSP900M-60PJ meets 80 PLUS Gold efficiency, reaching up to 90% efficiency at typical load conditions.

Higher efficiency reduces power loss and internal heat generation, supporting thermal stability and long-term reliability in compact 1U medical systems.

Q4: Is the FSP900M-60PJ compliant with Intel ATX12V v3.1 and PCIe Gen 5 requirements?

Yes. The FSP900M-60PJ is compliant with Intel ATX12V v3.1 and supports PCIe Gen 5 (12V-2x6) connectivity.

This ensures compatibility with modern CPUs and high-power GPUs used in medical imaging and edge AI platforms.

Q5: What built-in protection features are included in the FSP900M-60PJ?

The FSP900M-60PJ includes OVP, UVP, OCP, OPP, SCP, and OTP protection mechanisms.

These protections safeguard both the power supply and the connected medical system against abnormal voltage, overcurrent, overload, short-circuit, and overtemperature conditions.

Q6: What hold-up time and operating conditions does the FSP900M-60PJ support?

The FSP900M-60PJ provides a minimum hold-up time of 17 ms at 80% load for both 115 VAC and 230 VAC input.

This helps medical systems ride through short mains interruptions without unexpected shutdown. The unit supports global AC input (90–264 VAC) and operation at altitudes up to 5,000 m.

Q7: What medical safety and EMC standards does the FSP900M-60PJ comply with?

The FSP900M-60PJ is certified to IEC 60601-1 and IEC 62368-1, and complies with EN 55011 Class B EMC requirements.

It provides 2 × MOPP isolation (4,000 VAC input-to-output), BF class isolation, and touch current ≤100 μA, supporting use in regulated medical environments.

Q8: What is the maximum operating temperature of the FSP900M-60PJ, and is derating required above that temperature?

The FSP900M-60PJ is specified for operation from 0°C to +50°C at full load. For higher ambient temperatures, output derating applies: power capability decreases linearly from 100% at +50°C to 50% at +70°C.

The power supply is designed with internal design margin; however, continuous operation above the specified full-load temperature range may reduce long-term component lifetime. Proper thermal design and airflow management are recommended for high-temperature applications.

Q9: What is the earth leakage current of the FSP900M-60PJ in practical operation?

The FSP900M-60PJ is specified with a maximum earth leakage current of 400 μA at 264 VAC / 63 Hz.

Typical measured values are significantly lower (approximately 150 μA under standard test conditions). However, production tolerance, measurement setup, and operating conditions must be considered. The published 400 μA specification represents the guaranteed maximum value, including design margin.

Q10: Does FSP Power Solution GmbH provide design-in support or customization services?

Yes. FSP Power Solution GmbH (ISO 9001, ISO 13485) provides FAE design-in support and customization services for medical systems using the FSP900M-60PJ.

Support includes integration guidance, documentation assistance, and options such as cable/connector configurations, mechanical adjustments, and firmware/PMBus settings to reduce validation risk and shorten development time.