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DC/DC converters for AEC-Q100 Grade 1, in distribution

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By Christoph Hammerschmidt

The RECOM RPX DC/DC converters in QFN housings are now also available as ‘-Q’ variants which meet the strict requirements of the automotive industry according to AEC-Q100 Grade 1. Optionally, they can also be equipped with ‘wettable flanks’ for automated optical inspection (AOI). The extremely small, lead-free, and thermally optimized 3 x 5 x 1.6 mm housing operates with derating up to well over 100 °C ambient temperature, both for the RPX-0.5Q (0.5 A) and the RPX-1.5Q variant (1.5 A).

In the RPX series, the required inductance is already integrated. For full functionality, only external input and output capacitors adapted to the respective application are required. On/off control and synchronization inputs are equipped with a power-good output. The input voltage range of the converters is up to 36 V. Output can be trimmed from 0.8 V to 30 V.

The over-moulded Flip-Chip-on-Leadframe (FCOL) construction used ensures the lowest thermal resistance of the enclosure. This also makes it possible to keep manufacturing and end-product prices low.

The DC/DC converters are equipped with a soft-start function, as well as full short-circuit, overcurrent, over-temperature, and input under-voltage protection. Electromagnetic interference is kept low thanks to the FCOL design. A fixed frequency operation allows easy implementation of the required additional filtering.

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