Open-frame unit saves space, cuts energy costs and increases system reliability
Simi Valley, CA, September 19, 2012 – N2Power, a division of Qualstar Corporation (NASDAQ: QBAK), announces a new 330W AC-DC power supply that features an industry-leading combination of power density and efficiency. The 1.35-inch high, open-frame XL330-54 has a 3-inch x 5.3-inch (76mm x 135mm) footprint to deliver a power density of 15W/in3 with only 13CFM cooling, a space saving of 32% compared to typical 1U units of similar rating, most of which have a 6-inch x 4-inch (102mm x 152mm) footprint. Its maximum full-load efficiency of 90%, achieved through synchronous rectification, Or-ing MOSFETs and a unique active PFC design, means that the XL330-54 generates 23% less heat than most comparable power supplies, minimizing cooling requirements and increasing system reliability. The highefficiency delivers energy savings throughout the product’s life, providing greater return on investment.
The XL330-54 has two primary outputs: 54V/6.1A and 12V/9A, plus a 12V/1A auxiliary output. The 54V output is 2250VDC isolated from theother 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.
Other features of the power supplies include universal AC input (90-264VAC) 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.
N2Power’s Vice President and General Manager, Randy Johnson, said, â€œWith the rising price of energy across the globe, engineers now appreciate that efficiency gains of just a few percentage points deliver substantial cost benefits throughout a product’s operating life. For example, when a power supply is 90% efficient, rather than 87% efficient, that’s a 23% performance improvement and energy saving. N2Power delivers this improvement without compromising the product’s compact size or other desirable features.â€
Sample units of the XL330-54 are available in the UK and Ireland from Luso Electronics Distribution.