Specifications
Model Name
DPS-550AB-22
Rated Power
550 W
Output — +12 V
+12 V L/H 45.8 A
Output — Standby
12 Vsb 2.1 A
Dimensions (H × W × L)
40.0 × 73.5 × 185.0 mm
Efficiency
80 PLUS Platinum
Input Voltage
90–264 VAC / 180–300 VDC
Form Factor
CRPS, 1U
Cooling
Internal fan, front-to-back airflow
Control Interface
PMBus
Protection
OVP, OCP, OTP, short circuit
Compliance
CRPS: 73.5 × 40.0 × 185.0 mm (1U long)
Overview
The Delta DPS-550AB-22 is a 550 W CRPS (Common Redundant Power Supply) module for 1U and 2U rack servers. CRPS is the standard hot-swap form factor for redundant server power: two or more modules share the load and a failed unit can be pulled and replaced without powering the chassis down.
80 PLUS Platinum efficiency keeps the 12 V rail cool at high load, which matters in 1U chassis where the PSU airflow path also cools the drive bays. The 90–264 VAC input range covers both 230 V rack PDUs and 240 VDC data center bus architectures.
PMBus telemetry exposes input/output voltage, current, power, temperature and fan speed per module, so a BMC can report which unit is degrading before it fails rather than only alarming on a full outage.
Key Benefits
550 W at Platinum: less heat in 1U enclosures. Hot-swap CRPS: service without downtime. PMBus: per-module telemetry to the BMC.
Applications
1U/2U rack servers, GPU and AI edge servers, storage JBOD controllers, network aggregation platforms and redundant industrial enclosures.
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