Flex Power Modules has released its PKU4317D series of DC-DC converters in an industry-standard, low profile, 1/16th brick format, 33.02mm x 22.86mm x 11.3mm. The part operates over an input range of 48-60VDC with a regulated and adjustable output of 12VDC rated at 25A/300W.
Efficiency is high at 96.4% at 48 Vin and half load, staying above 95% from light to full load with advanced thermal design permitting a wide hot-spot operating temperature of -40C to +125C. The isolation rating is 2250VDC input to output and meets safety requirements according to IEC/EN/UL 62368-1. MTBF is 11.8 million hours, according to Telcordia SR-332 Issue 2 Method 1 at +40C. The product is completely protected against overtemperature, input under voltage and output over-voltage, over-current and short circuits. Start-up into a pre-biased load is possible and is monotonic. A remote-control input is also provided.
The device meets ‘Class B’ EMI conducted emissions limits according to EN 55032/CISPR 32/FCC part 15J with a simple external filter and withstands input transients up to 80VDC according to ETSI EN300 132-2 and Telcordia GR-1089-CORE.
The part can be cooled as an open frame module with derating dependent on airflow or by employing the optional baseplate for higher power with less derating in airflow or by fixing to a heatsink/cold wall. Through-hole and surface-mount versions are available.