1100W front-end power supply series expanded to include DC input versions

Paul Boughton

CUI Inc today announced an addition to its line of 1100W front-end power supplies to include dc input versions.

The PSD-1100-12 series delivers high power density and achieves efficiency in a compact slim line 1U package measuring just 1.575 x 2.145 x 12.65 inches (40 x 54.5 x 321.3mm).

The narrow 54mm profile allows designers to minimise application space compared with larger solutions on the market. The power supply outputs 12Vdc with 5Vdc or 3.3Vdc pin-selectable standby.

The PSD-1100-12 is hot pluggable with a dc input connector at the front and an industry standard output connector that integrates dc power and signal pins at the back.

With an input range of 40~72Vdc, the unit is designed to be compatible with CUI’s existing ac input PSA-1100-12, allowing plug and play operation between the two versions. The series is suited for telecom, server and networking rack mount applications where a mix of ac input and dc input versions are required.

The PSD-1100-12 features system communications via I2C/PMBus protocol for control and monitoring of the unit. The main 12Vdc output delivers up to 92A with droop current sharing for paralleling multiple units; forced current sharing is optional.

For maximum flexibility, the series is available in front-to-back or back-to-front airflow configurations depending on the application’s cooling requirements. The PSD-1100-12 also offers 60950-1 safety approvals, bears the CE Mark, and complies with all applicable EMC requirements to accommodate world wide applications. Protections for over-voltage, over-current, over-temperature, and input under-voltage are standard.