PSUs provide constant current output down to 0V
1 min read
A new range of 800 and 1500W programmable ac/dc power supplies has been introduced by XP Power.
With a typical efficiency of up to 93%, the single output devices measure 249.0 x 127.0 x 40.9mm and 280 x 127 x 63.5mm respectively and fit into an industry standard 1 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 rated at greater than 10W per cubic inch.
Both the output voltage and output current are programmable from 0 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, compared to the standard 20 to 40%.
The HDS series comprises seven models covering nominal outputs from 12 to 60VDC. The output voltage for both families can 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/0.5A or 9VDC/0.3A when the ac input is present.
