Two eighth-brick DC/DCs have DOSA-compatible profile

Two DC/DC converters have been added to Recom’s eighth brick product range. The 100W and 300W DC/DCs are cost-effective, says the company and have a DOSA-compatible low profile.

The dimensions of the RPA100E-W and RPA300E are 58.4 x 23mm for a footprint which is industry-standard DOSA-compatible. The 100W RPA100E-W has a profile of just 11mme while the 300W RPA300E has a profile of 12.7mm. Pin-out is also standard for both models and compatible with quarter-bricks, offering the potential for space saving in some applications without sacrificing power rating, observes Recom.

The RPA100E-W 100W DC/DC converter has a wide 4:1 input range of 16 to 72V for nominal 24, 28 and 48V supplies. Regulated 5.0V and 12V trimmable outputs are available. Full power is available to 50 degrees C ambient in natural convection and to +85 degrees C with forced air. Isolation is 1.5kVDC/one minute, basic grade.

The RPA300E 300W part has an input range of 36 to 75V for nominal 48V supplies and features an output trimmable over a wide range of 16 to 35V. Isolation of this part is 2.25kVDC/one minute, basic grade. The RPA300E has an integrated heat spreader that allows direct screw fixing to a heatsink or cold wall. Full load operation without heatsinking is up to 60 degrees C with forced air and to 85 degrees C with load derating.

Both product ranges have high power density with a typical efficiency of 94.8 per cent (RPA300E) and 92 per cent (RPA100E). High efficiency (over 90 per cent) is also maintained down to light loads, says Recom. This ensures the DC/DC converters suit applications with low standby loss requirements. The ranges include comprehensive protection against input under-voltage, short circuit, output over-current, over-voltage and over-temperature. Control features include on/off control and remote sensing.

The RPA100E and RPA300E ranges are certified to UL / CAN / CSA 62368-1 safety standard for basic isolation and are compliant to EMC standard CISPR22 class B with an external filter.

Samples are available from all authorised distributors or directly from Recom.

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