DS800SL-3

The Emerson Network Power DS800SL-3 is an 800-watt bulk front-end power supply designed for enterprise servers and space-constrained applications. It meets the 80 PLUS Gold standard for efficiency, achieving 92 percent at half-load from a 230Vac input, with a power factor exceeding 0.99. The unit boasts a high power density of 19.05 W/in3 in a slim-line rack-mounting package.

This fully digital power supply utilizes the industry-standard PMBus communications protocol with a built-in I2C serial bus interface. It operates within a wide input voltage range of 90 to 264 Vac. The main 12 Vdc output is programmable by +/- 10 percent and can deliver up to 65.7 A continuously. An auxiliary 5 Vdc output, rated at 2.4 A, is also provided for server management circuits. Both outputs are tightly regulated, have no minimum load requirement, and offer remote sensing.

The DS800SL-3 supports hot-swap operation for fault-tolerant and N+1 redundancy applications, allowing up to six units to be connected in parallel. Active load sharing facilities are built-in, enabling up to four units to share current from their 12 Vdc outputs with 5 percent accuracy. The power supply operates within a temperature range of -10 to 50 degrees Celsius with no derating and features a built-in cooling fan with automatic speed control. Forward and reversed airflow versions are available for simplified integration.