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DS450/550DC Series

Not for New Designs

450 to 550 W Power Supplies (48 V DC Input)

The DS450DC and DS550DC series bulk front end power supplies are the DC-input versions of their DS450 and DS550 AC-input counterparts. Mechanically identical to the AC versions, these products allow system operation from a Telco style 48 VDC input. Rated at 450 and 550 W, the DS450/550 power supplies generate a main DC output of 12 VDC and a 3.3 VDC for powering standby circuitry. Standard features include active current sharing, internal ORing FETs and an EEPROM for storing service data to facilitate efficient field replacement. An I2C communication interface is provided for the FRU EEPROM data. DS450DC and DS550DC series power supplies are hot pluggable and ideal for fault tolerant and N+1 redundant applications.


  • 1U x 2U Form Factor
  • 10.3 W/cu-in
  • 3.3 VDC Stand-By
  • No Minimum Load Required
  • Hot Plug Operation
  • N+1 Redundant
  • Internal Or-ing Diodes
  • Active Current Share
  • I2C Communications Bus
  • Smart Fan Speed Control


  • Hot Plug Operation
  • N+1 Redundant
  • Internal Or-ing Diodes
  • Active Current Share


Output Power (W): 550
Length (Inches): 11.05
Width (Inches): 3.07
Height (Inches): 1.57
Mounting Type: Rack-mount
Minimum Output Current (A): 0
Maximum Output Current (A): 45
Output Voltage Range (V): 12V to 12V
All Specifications Collapse Specifications

Stock Check

Model Number
Min. Voltage (V) Max. Voltage (V) Current (A) Nominal Voltage (V) Number of Outputs Samples Buy
DS450DC-3 Active, In Stock 12 12 37 0 1 Request Buy
DS550DC-3 Active, Contact Us 12 12 45 0 1 Contact Us Buy

Technical Documentation

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