Friday, May 25, 2018
Publication Date: 12/1/2012
Archive >  December 2012 Issue >  New Products > 

N2Power: High Efficiency, High Density Power Supply
High density power supply.
Simi Valley, CA — N2Power, a division of Qualstar Corporation, has introduced a new 330W AC/DC power supply that provides a high combination of power density and efficiency. The 1.35-in. (34mm) high, open-frame XL330-54 has a 3 x 5.3-in. (76 x 135mm) footprint to deliver a power density of 15W/in3 with only 13CFM cooling — a space saving of 32 percent compared to typical 1U units of similar rating, most of which have a 6 x 4-in. (102 x 152mm) footprint.

Maximum full-load efficiency is 90 percent, achieved through synchronous rectification, MOSFETs and an unusual active PFC design. Thus the XL330-54 generates 23 percent less heat than most comparable power supplies, minimizing cooling requirements and increasing system reliability. The high efficiency delivers energy savings throughout the product's life, providing greater return on investment.

The supply has two primary outputs: 54V/6.1A and 12V/9A, plus a 12V/1A auxiliary output. The 54V output is 2250VDC isolated from the other outputs making it Power-over-Ethernet (PoE) compatible. The design allows active current sharing on the 54V output for up to four power supplies to be operated in parallel. N+1 operation can also be configured.

The power supplies include universal AC input (90 to 264VAC) and active inrush current protection of 10.5A at 240VAC, which does not change during operation. The XL330-54 CS is RoHS-compliant and meets all major international safety and EMC requirements.

Contact: N2Power, 3990-B Heritage Oak Court, Simi Valley, CA 93063 805-583-7744 fax: 805-583-7749 Web: or

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