MC-CRPS 550W - AI server power supply

I. Core Definition and Standards
CRPS: The server redundant power supply specification defined by Intel, with a uniform size of 185×73.5×40 mm (1U specification), supporting hot-swapping, N+1/N+N redundancy, and PMBus monitoring;
550W is the mainstream entry-level power range, specifically designed for compact AI inference nodes, edge servers, and high-density storage;
The output is mostly +12V main output (approximately 45A) + 12VSB standby (2-3A), without traditional multi-path (5V/3.3V), converted by the motherboard DC-DC to adapt to AI chips/CPU.

II. Key Technical Characteristics
Efficiency and Certification: Commonly 80 PLUS Platinum (94% peak efficiency), supports wide voltage input (90–264V AC/240V DC), reducing data center energy consumption;
Hot-swapping and Redundancy: Online replacement without shutting down, 1+1/N+1 architecture avoids single-point failure;
Monitoring and Protection: PMBus 1.2 protocol, can remotely read voltage/current/temperature; equipped with OVP/UVP/OCP/OTP/SCP full protection;
Heat Dissipation: Supports front/back and left/right bidirectional airflow, suitable for different cabinet air ducts;
Reliability: MTBF typically > 200,000 hours, 100% full-load aging test.

III. Adaptation Value of AI Servers
High-density deployment: Standard size can accommodate 2 to 4 modules side by side in a 2U chassis, meeting the space requirements for AI inference nodes;
Power elasticity: Redundant design prevents AI tasks from being interrupted due to a single power failure; PMBus can be linked with power and BMC to achieve power limit and dynamic voltage adjustment, adapting to the load fluctuations of GPU/TPU;
Operation simplification: Uniform specifications, interchangeable across brands, reducing spare parts costs.

IV. Selection Key Points
Confirm whether it supports 240V DC (high-voltage DC is more suitable for large data centers);
Peak power capacity (the instantaneous power consumption of AI chips often exceeds the rated value);
Airflow direction and cabinet air duct matching;
Certification (UL/CE/CCC/CB) and warranty period (3 to 5 years).

V. Differences from Traditional ATX Power Supply
Dimension CRPS 550W Ordinary ATX power supply
Size 185×73.5×40 mm (standard) Diverse, not unified
Redundancy / Hot Swap Original support Almost no support
Output Pure 12V bus Multiple groups of 5V/3.3V/12V
Monitoring PMBus remote management Simple protection, no network monitoring
Applicable scenarios AI servers / Data centers Household / Workstations