RECOM — RPX-4.0 Series Buck Converter Modules

RECOM has extended its RPX series of miniature buck converter modules with new devices which supply a 4 A output, to allow engineers to reduce the size of their designs without sacrificing power or maximum temperature tolerance. The RPX-4.0, housed in a thermally-enhanced QFN package, has a 5.0 mm x 5.5 mm footprint and is only 4.1 mm high.

The module operates over an input-voltage range of 3.8 V to 36 V, which means it is suitable for use with 5 V, 12 V, or 24 V regulated or unregulated power rails. The output voltage may be set with two resistors to values between 1 V and 7 V.

The product features on-off control, a power-good signal, and soft start. Protection functions include under-voltage, short-circuit, over-current, and over-temperature.

The module is based on the RECOM 3D Power Packaging® technology which offers increased power density, allowing for full-power operation up to 65°C, and derated operation up to 90°C. It includes a flip-chip-on-leadframe construction, an integrated shielded inductor for low EMI, and intelligent control of switching frequency to maintain high efficiency even at light loads.

Apart from the voltage-setting resistors, the only other external components required are input/output capacitors.