700 W half-brick converter
14 June 2017
Power Electronics / Power Management
Artesyn Embedded Technologies has launched a new 700 W half-brick DC-DC converter module, the ADH700 series. The first model available offers a 28 V nominal output and is designed to support the popular use of LDMOS technology used in high-power wireless base station deployments. LDMOS stands for laterally diffused metal oxide semiconductor and 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 (61,0 x 57,9 mm) the ADH700 series is just 12,7 mm high. The converter series offers greater than 95% typical efficiency and a wide input range of 36 to 65 V.
An aluminium baseplate structure gives ADH700 series modules excellent thermal performance. 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 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 and over-voltage protection, and over-temperature protection. No minimum load requirement helps to increase reliability and contributes to an MTBF of two million hours.
For more information contact Pieter Engelbrecht, Avnet South Africa, +27 (0)11 319 8600, [email protected], www.avnet.co.za
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