Power-One Unveils SQE Series Eighth-Brick DC Converters
Power-One Inc. (Camarillo, CA), a developer of power supplies and components, introduced its 30 A SQE Series of eighth-brick dc-dc converters, which are suitable power sources for communications and server applications.
With a full range of outputs (1.2 Vdc, 1.5 Vdc, 1.8 Vdc, 2.5 Vdc and 3.3 Vdc) providing thermal performance superior to 30 A quarter bricks, the SQE Series requires only 200 LFM of cooling at temperatures up to 70 °C to deliver 29 A and 300 LFM for a full-rated 30 A. The thermal performance is facilitated by high efficiencies, up to 92% for the 3.3 V output model at half-load, and advanced thermal management techniques. Preclusion of a heatsink combined with a low profile minimizes airflow shadowing to enhance cooling for downstream devices.
Migrating to this high-reliability converter (15.75 million-hour mean time between failure as per Telcordia TR-332, Method 1, Case 1) is facilitated by pin-for-pin and trim-equation compatibility with other eighth bricks and 25 A to 30 A quarter bricks. Other features include wide-input-range (36 Vdc to 75 Vdc) operation, an on-board input differential LC filter, remote sense, and startup into pre-biased loads. The SQE Series is protected against input under-voltage, over-temperature, output over-current and output over-voltage.
Regulatory agency approvals include UL60950 (including basic insulation requirements) and DEMKO certification to IEC/EN60950. Pricing is $38 each in quantities of 1,000. Evaluation units are usually available from stock. Production quantities are available in six to eight weeks. RoHS-compliant versions will be available in the fourth quarter of 2005.
