Eighth-brick dc/dc converters boast high efficiency

Two new dc/dc products have outputs of 100 W and 300 W in a DOSA-compatible low-profile, through-hole eighth-brick format (58.4x 23 mm).

The RPA100E-W 100-W part has a wide 4:1 input range of 16-72 V for nominal 24, 28 and 48 V supplies, and fully regulated 5 and 12 V trimmable outputs are available. Full power is available to 50°C ambient in natural convection and to +85°C with forced air. Isolation is 1.5 kVdc/1 min, basic grade.

The RPA300E 300W part has an input range of 36-75 V for nominal 48-V supplies and features an output trimmable over a wide range of 16-35 V. Isolation of this part is 2.25 kVdc/1 min, basic grade. The RPA300E has an integrated heat spreader that allows direct screw-fixing to a heatsink or cold wall. Full-load operation of this part without heatsinking is to 60°C with forced air and to 85°C with load derating.

Both product ranges have high power density with a typical efficiency of 94.8% (RPA300E) and 92% (RPA100E). High efficiency >90% is also maintained down to light loads to 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 included are 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.

The footprint of both parts is industry-standard DOSA-compatible, and the 100-W part is just 11-mm profile while the 300W part is 12.7 mm. Pin-out is also standard and compatible with quarter-bricks allowing possible space saving in some applications without sacrificing power rating.

“The RPA100E and RPA300E eighth-brick dc/dcs are great examples of our commitment to develop high power-density converters” commented Matthew Dauterive, dc/dc product manager of RECOM. “They will find applications in all demanding industries from telecom, test and measurement, in data centers, industrial automation, and in PoE”.

RECOM Power, Inc., 6870 W 52nd Ave, Suite 125, Arvada, CO 80002, +1-720-386-0400, fax +1-720-458-0666, recom-power.com/