Eighth-brick DC-DCs offer high efficiency

RECOM now offers two new cost-effective DC-DC devices with outputs of 100W and 300W in a DOSA-compatible low-profile, through-hole eighth-brick format (58.4mm x 23mm).

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

The RPA300E 300W part provides an input range of 36-75V for nominal 48V supplies and offers an output trimmable over a wide range of 16-35V. Isolation of this part is 2.25kVDC/1 min, basic grade. The device has an integrated heat spreader that enables direct screw-fixing to a heatsink or cold wall. Full-load operation of this part with no heatsinking is to 60C with forced air and 85C with load derating.

Both ranges have high power density with a typical efficiency of 94.8% (RPA300E) and 92% (RPA100E). High efficiency >90% is also supported down to light loads to suit applications with low standby loss demands. The ranges include comprehensive protection against short circuit, input under-voltage, output over-current, over-voltage and over-temperature. Control features incorporated are on/off control and remote sensing.

The 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 devices is industry-standard DOSA-compatible, and the 100W part is only an 11mm profile while the 300W part is 12.7mm. Pin-out is also standard and compatible with quarter-bricks providing possible space-saving in some applications with no sacrifice of 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 centres, industrial automation, and in PoE”.