XP Power announced the HDS series of 800 and 1500 Watt highly efficient programmable AC-DC power supplies. With a typical efficiency of up to 93%, these single output low profile supplies measure 249.0 ×127.0 × 40.9 mm (9.80 × 5.00 × 1.61 inches) for the 800Watt models and 280 × 127 × 63.5 mm (11.02 × 5.0 × 2.5 inches) for the 1500Watt range and fit into an industry standard 1U or 2U profile. Two front mounted variable speed fans, included in the above dimensions, help conserve energy and keep noise to a minimum. The power density of these compact units is greater than 10Watts per cubic inch.
Both the output voltage and output current are programmable from 0% through to 105% of stated nominal through a serial RS232 interface, I2C interface, a 0 to +5VDC input or via an external potential divider. By programming the output current a true constant current output is achieved down to almost zero volts, this being significantly better than the industry norm which is typically only down to 20-40%.
The HDS series comprises seven models covering the popular nominal outputs from +12 to +60VDC. The output voltage for both series can also be manually adjusted ±5% by a trim function in order to make up for line losses. Both ranges also provide a user selectable standby output of 5VDC / 0.5Amp or 9VDC / 0.3Amp when the AC input is present.
The units include a comprehensive set of signals and controls such as remote on/off, AC OK, remote sense, PWM switching and overtemperature shutdown. A multifunction LED indicates the power supply status and gives warning notifications through use of different colours and blinking rates.