Hot-swap 400 W supply

Power-One has introduced what it claims is the industry's most powerful AC/DC power supply specifically designed for power-over-LAN applications.

The 400 W PALS400 is a fully enclosed supply and meets IEEE's 802.3AF. It provides isolation of 2250 VDC between the main output, all other outputs, and interface signals.

The low noise and ripple outputs of 12 VDC at 16 A and 48 VDC at 8 A are complemented with a 12 VDC at 500 mA standby output to facilitate I2C interface operation.

This power-dense product (6.25 W/in3) 10/4" x 4" x 1.6" package is designed for 1U high applications and features a front panel that includes alarm and monitor LEDs, AC input connector, on/off switch, integral handle, and a fan inlet.

The hot-swap SSI type rear connector provides output power and access to I2C, power fail, active-current share, remote sense, output good, power supply present, and remote enable interface signals.

Other features include internal-diode isolation for redundant operation of PALS400s, an 85 to 264 VAC input range, full-power operation to 50°C with power-derated operation to 70°C, IEC61000-3-2 compliant 98% efficient PFC, and inrush-current limiting.

Protection features include overload and short circuit, brownout, over temperature/fan fail warning and shutdown, output overvoltage, and MOV-input-transient protection.