Power Electronics

600-W AC-DC Power Supply Meets PoE Requirements

Power-One Inc.’s 600-W PALS600-2482 is the industry’s most powerful ac-dc standard product specifically designed for Power-over-Ethernet (PoE) applications. This extremely-power-dense (9 W/in3) 1-U high power supply is designed for powering PoE systems and associated appliances such as IP phones and remote access devices.

Full compliance to IEEE 802.3af includes extremely low noise and ripple on the 48 Vdc at 9-A output and 1500 Vac (2250 Vdc) isolation between this output and all other outputs and interface signals. A second output provides 12 Vdc at 16 A, and a 12 Vdc at 500 mA standby output facilitates I2C interface operation and host-system start-up. Interface signals include I2C, power fail, active-current share, remote sense, output good, power-supply present and remote enable.

Additional performance features include internal-diode isolation for parallel or redundant operation, IEC61000-3-2 compliant PFC with inrush-current limit, full-power operation to 50°C, and with power-derated operation to 70°C. Protection features include overload and short circuit, brownout, overtemperature and fan fail warnings and shutdowns, output overvoltage, and MOV-input-transient protection.

The fully-enclosed 10.4-in. × 4-in. × 1.6× (264.2-mm × 101.6-mm × 40.6-mm) package includes front-panel alarm and monitor LEDs, ac input connector, on/off switch, integral handle, fan inlet and hot-swap SSI-type rear connector. Safety agency approvals include UL60950-1/CSA 22.2 No. 60950-1, EN60950-1 (TUV) and IEC60950-1.

Pricing for the PALS600 is $475 each in quantities of 100. Evaluation units are available from stock to four weeks. Production quantities are typically available in eight to 10 weeks.

For more information, visit www.power-one.com.

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