Astec Power Intros DS Series AC-DC Power Supplies
Emerson Network Power, a business of Emerson (St. Louis, MO), announced a new line of high-density ac-dc distributed bulk power front-ends from its Astec Power's (Carlsbad, CA). With a +12 Vdc main output and a +3.3 Vdc standby output, the first of the new DS Series power supplies are available in power ratings of 450 W and 550 W, with additional 650 W and 850 W models slated for release later this year. A 1U by 2U profile (1.57 in x 3.07 in x 12.03 in) enables flexible configuration options to maximize the use of rack space.
The high-density (>10 W/in³) design and high-availability make the DS Series suitable for high-density server applications as well as other datacom, data storage, medical and industrial applications. Featuring full current-sharing capabilities and internal OR-ing diodes for isolation, the DS Series is designed to support hot-swap and redundancy for applications requiring maximum reliability.
With ac input from 90 Vac to 264 Vac, the DS Series modules feature active power-factor correction (typically >0.98) that meets EN61000-3-2 standards for input-current harmonic content. The DS Series provides up to 45 A at 12 Vdc (on the 550 W model), and offers a standby supervisory output of 3.3 V at 3 A. Each supply has over-voltage and over-current protection, active inrush current-limiting circuitry and internal OR-ing diodes. The internally fan-cooled units have no minimum load requirements and include over-temperature protection, remote-inhibit and remote-sensing on the main output. An I2C communications interface bus provides voltage and current monitoring, remote on/off, and internal fan speed control.
The new DS Series units operate without derating over a wide temperature range from 10 °C to 45 °C and conform to industry standards for shock and vibration. Optimized 1U x 2U racks are being designed for the DS Series and will be available in the near future. Pricing in OEM quantities for the new models start at $180 for the DS450-3 model.
