DS450/550DC Series 450–550 Watt Power Supplies (48 V DC Input)

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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 watts, the DS450/550 power supplies generate a main DC output of 12 Vdc and a 3.3 Vd 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.

DS450/550DC Datasheet(s)

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  • Total Max Power: 550 W
  • Total Max Current: 45 A
  • Input Voltage: 40 V to 75 V
  • Output Voltage: 12 V
  • Outputs: Single
  • Size (L x W x H): 11.050" x 3.070" x 1.570"
  • Warranty: 1 year
  • Operating Temperature: +10°C to +45°C

Electrical Specifications

  • Input Range: 40 - 75 VDC
  • Inrush Current: 21 A Max
  • Hold-up: 1 mSec
  • Effiency: 87% Typical
  • Main DC Output: 12 VDC
  • Turn On Delay: < 3 Seconds
  • Stand by (Aux) Output: 3.3 VDC
  • Protections: OCP/OVP/OTP
  • 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