Product category:
AC/DC Power Supplies
News Release from: Emerson Network Power - Embedded Power | Subject: DS657
Edited by the Electronicstalk Editorial
Team on 22 July 2005
Power-over-Ethernet supply has universal
AC inputs
The Astec Power DS657 is an AC/DC source for power-over-Ethernet (PoE) applications.
The Astec Power DS657 is an AC/DC source for power-over-Ethernet (PoE) applications Featuring IEEE 802.3af compliance, the slim 1U device supplies 657W of power at 48/51V DC for endspan and midspan PoE implementations along with an isolated 12V for a distributed power source
This article was originally published on Electronicstalk on 4 Feb 2000 at 8.00am (UK)
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Universal input of 85-264V AC at 47-63Hz gives the new model flexibility to address the requirements of a range of new voice over Internet Protocol (VoIP) phones and other active-Ethernet devices on a worldwide basis.
"With the increasing popularity of IP telephony and remote access devices that use inline power, the marketplace has been looking for a robust PoE solution", explained Astec Power Product Marketing Director Chris Jones.
"With the Astec DS657, we have an answer that can meet a variety of large and medium-scale 802.3af requirements for endspan and midspan power while offering 2250Vs of DC isolation, EN601000-3-2 harmonic compliance, EMI filtering and active power factor correction".
"The hot-swap capability, 20ms minimum holdup time and demonstrated MTBF in excess of 500kh are especially desirable for critical installations".
In addition to the 48 and 12V DC nominal outputs, the Astec DS657 unit includes a 0.5A 12V DC standby output.
The compact, ball-bearing fan-cooled 1U device operates from 0 to 50C and can also be mounted vertically for zero-U installation.
It also features active current sharing and fan-speed control as well as overcurrent, overvoltage and overtemperature protection.
A standard IEC320 inlet provides AC input power, and three LEDs indicate AC power in, DC power out and temperature status.
I2C communications enable full logic control, via the blind-mate hot plug connector, for additional customisation and functionality.
Backed by a one-year warranty, the new Astec DS657 models meet international safety and performance standards including listings from or compliance with UL, TUV, IEC, FCC, CISPR and CE.
Samples are available now with prices starting at $240 in OEM quantities.
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