Power supplies work without cooling fans

PSL400BP baseplate-cooled AC/DC units can be mounted in a sealed box as long as the external heat sinking can maintain the baseplate at a temperature of 80C or below

Powersolve has introduced the PSL400BP series of baseplate-cooled AC/DC units. The new power supplies are designed to offer single outputs of 5, 12, 24 or 48V DC with output power up to 400W. The input range is 85 to 264V AC, 47 to 63Hz and all models feature active power factor correction to conform with EN61000-3-2.
These rugged power supplies are housed in a robust extruded aluminium chassis designed for use in industrial or other types of equipment where cooling fans are undesirable and convection airflow is not available.

Units can be mounted in a sealed box as long as the external heat sinking can maintain the baseplate at a temperature of 80C or below.

Standard features include over current and short circuit protection, over voltage and over temperature protection, output voltage adjust, remote on/off, output power good signal, +5V 1A standby output and LED indicator to show V out present.

All units are also designed to to operate in parallel for N+1 redundant operation and feature integral ORing diodes.

The PCB is conformally coated for protection against the ingress of moisture and dirt and operating temperature range is -20 to +70 C, providing the baseplate temperature can be maintained at 80C or below.