Convection-Cooled 4” X 2” AC-DCs Deliver 125W at 50 C

RECOM's new RAC150-G series is a switched-mode power supply (SMPS) with high power density designed for applications operating with limited airflow. Under natural convection, the SMPS provide 125W at +50 degrees C from a compact 4" by 2" open-frame package and even up to 122W in an aluminum case; under forced air cooling, a constant output of up to 150W is achieved.

Ensuring the SMPS’s long service life and reliability at such a high power density required overcoming a number of design challenges, such as placing the SMD semiconductors on the board in such a way as to dissipate excess heat through copper surfaces acting as heat sinks on the board and through an aluminum base plate via heat-conducting pads.

The power supplies operate at input voltages between 90 and 264 Vac at temperature ranging from -30 to +70 degrees C. Modules with 12V, 24V, and 48V outputs come with short-circuit as well as overvoltage protection and efficiency of 91%.

These SMPS modules are IEC/EN/UL 60950-1 and IEC/EN/UL62368-1 certified, and comply with the RoHS directive and EN55022/24 Class B for electromagnetic compatibility. The modules come with a three-year warranty. Samples are available from all of RECOM’s global distributors.