Date: 24/11/2009

1/8 DC/DC converter brick module from Ericsson for power amps and cold-wall cooling tech

Ericsson has released the Power Modules' PKB4513PINBLC, a new 50W eighth-brick DC/DC converter that powers 12V intermediate bus architectures, and suitable for a large range of applications and systems that use cold-wall cooling technology.

The key features of the PKB4513PINBLC power module are,

Operating input voltage ranges from 36V to 75V
Output ranges up to 30 A / 90 W
8.1 mm (0.319 in) of max height
92% efficiency typically at 12 V out half load
Available with SMD option

By reducing thermal resistance between dissipating components and the cooling plate, the modules' performance is optimized, reducing component stress, resulting in a high MTBF of greater than 1.6 million hours.

The suggested applications for PKB4153PINBLC power module include antennas and equipments such as power-amplifiers, transceivers, combiners, monitoring, local repeaters and other applications embedded in sealed enclosures that are cooling plate (cold-wall) cooled.

To save energy, a large number of outdoor applications are using cold-wall technology instead of fans and forced-air cooling to drain inner dissipated power and heat to an external heatsink cooled by natural convection, or in some cases, water cooling.

The converter now also enables cold-wall applications to benefit from the flexibility offered by intermediate bus combined with high-efficient point-of-load technology.

The products are compatible with the relevant clauses and requirements of the RoHS directive 2002/95/EC and have a maximum concentration value of 0.1% by weight in homogeneous materials for lead, mercury, hexavalent chromium, PBB and PBDE and of 0.01% by weight in homogeneous materials for cadmium.

Ericsson's PKB4513PINBLC also used to power mid-power radio applications.

Operating temperature range: -40 to 120 degrees C

For more details visit www.ericsson.com