Fanless power supply suits medical applications

The XS500 range of 500W convection cooled AC/DC power supplies from Excelsys Technologies is said to have a typical efficiency of 92%.

Operating from supply in the range from 90 to 264V AC, the XS500 delivers 500W, making it suitable for acoustic and vibration sensitive applications, as well as for applications where fans are not permitted.

Offered with nominal outputs of 24V/21A and 48V/10.5A, the supply can provide non standard voltages through an on board potentiometer and Vtrim function. Standard features and control signals include remote on/off, power fail, remote sense, current limit adjustment, as well as over voltage, over current and over temperature protection.

Certified to EN60950 2nd Edition and EN60601-1 2nd and 3rd Editions, the device provides input to output isolation of 4kV AC, along with 2 MOPP (Means of Patient Protection) and a leakage current of less than 300µA. This, says the supplier, makes it suitable for use in B (body) and BF (body floating) type medical applications.

Optional features include I2C digital communications and an OR-ing function for N+1 redundancy. The product can also be conformal coated and ruggedised for use in harsh environments.