Artesyn launches 700 Watt power output half brick DC-DC converter module

Artesyn Embedded Technologies has launched the ADH700 series, a 700 watt half brick dc-dc converter module. The first model to be made available will offer a 28 V nominal output and has been designed to support the popular use of LDMOS technology used in high power wireless base station (BTS) deployments.

LDMOS (laterally diffused metal oxide semiconductor) is a dominant device technology used in high-power RF power amplifier (PA) applications for cellular infrastructure.

The ADH700 series nominal 28 V model can deliver up to 28.A output current and offers a wide trim range of 14 V to 33 V. Housed in the industry standard half-brick format (2.4 x 2.3 inches or 61.0 x 57.9 mm) the series is just 0.5 inch or 12.7 mm high.

The dc-dc converter series is able to offer greater than 95 percent typical efficiency and a wide input range of 36 to 65 V.

An aluminum baseplate structure gives the modules excellent thermal performance and the 28 V model can operate between -40°C and +85°C ambient temperature, and can continue to operate at full power up to 100°C baseplate temperature – all without air cooling.

The conversion technology employs 280 kHz fixed-frequency switching to help minimise external EMI filtering requirements.

Other features include remote enable, remote output sense and trim with protection features such as input under voltage lockout, output over current protection, output over voltage protection, and over temperature protection. No minimum load requirement helps to increase reliability and contributes to an MTBF of 2 million hours (calculated according to Telcordia SR-332-2006).

Neil Tyler