RECOM’s new power modules RPX-1.0, RPX-1.5, RPX-2.5, and RPX-4.0 have high power density footprints using thermally-enhanced QFN packages (SMD) for an operating temperature up to at least 85°C without forced air cooling. The 1A and 1.5A versions in 3mm x 5mm x 1.6mm QFN packages accept an input voltage range up to 36VDC and down to 4 VDC, allowing 5V, 12V, 15V, or unregulated 24VDC supply voltages to be used. The output voltage can be set with two resistors in the range from 0.8VDC up to 30VDC. The RPY also has an input voltage range of 4 – 36VDC, but instead of a regulated output voltage offers a dimmable constant current output of up to 1.5A, making it ideal for driving light power LEDs.
The 2.5A version in a 4 x 4.5 x 2.0mm QFN package accepts an input voltage range up to 28VDC and down to 4.5VDC, allowing 5V, 12V, 15V, or 24VDC supply voltages to be used. The output voltage can be set with two resistors in the range from 1.2VDC up to 6VDC.
The input range for RPX-4.0 is from 3.8V to 36VDC, allowing 5V, 12V, or 24VDC supply voltages to be used. It also features a programmable output voltage from 1V to 7VDC. This tiny converter (5.0 x 5.5 x 4.1mm) with its incredible thermal management opens up new possibilities in industrial automation, portable devices, and high-density or weight-sensitive applications.
Products in the RPX series are complete power modules with integrated power transistors and inductors, requiring only input and output capacitors and voltage setting resistors to form fully functioning power regulators with short-circuit protection, over current limiting and thermal shutdown. A resistor divider on the input allows an under-voltage lockout voltage to be set to protect battery-powered supplies from over-discharge. A resistor divider on the output allows the output voltage to be set over a very wide range. An enable input permits voltage supply sequencing and low power consumption in shutdown (microamps). State-of-the-art integration and RECOM’s ‘3D Power Packaging’ technology deliver optimal thermal management and high power density while lowering manufacturing costs, giving you exceptional electrical and thermal performance at a very affordable price.
Some products in the RPX and the RPY QFN package DC/DC converter series are now also offered as -Q variants, qualified to automotive standard AEC-Q100 grade 1, for operation up to +125°C. These parts include ‘wettable’ flanks, which facilitate automated optical inspection of the land-grid array solder joints.