N2Power's 330 W AC-DC power supply achieves 15 W/in3 power density and up to 90% efficiency


Open-frame unit saves space, cuts energy costs, and increases system reliability

Click image to enlarge: N2Power's XL330-54 open-frame power supply

N2Power has announced a new 1.35-in high 330-W open-frame AC-DC power supply. The XL330-54 has a 3 x 5.3-in. (76 x 135 mm) footprint to deliver a power density of 15 W/in3 with only 13 CFM cooling—a space saving of 32% compared to typical 1U units of similar rating, most of which have a 6 x 4-inch (102 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 high efficiency delivers energy savings throughout the product's life, providing greater return on investment. The XL330-54 has two primary outputs: 54 V, 6.1 A and 12 V, 9 A, plus a 12 V, 1 A auxiliary output. The isolation between the 54 V output and the other outputs is rated to 2250 V DC, making it PoE (Power-over-Ethernet) compatible. The design allows up to four XL330-54 power supplies to current share on the 54 V output. N+1 operation can also be configured. Other features of the power supplies include a 90 to 264 V AC universal input and active inrush current protection of 10.5 A at 240 V AC, 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, "With 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." The XL330-54 CS is priced from $165 each in OEM quantities of 500+. Sample units are available now. N2Power