Rugged power modules are ideal for harsh environments in industrial automotive applications

Powerbox has introduced a 400W DC-DC converter for use in industrial automotive applications in extreme environments. Designed for free air convection cooling, the ENA400-M is packaged in an aluminum enclosure with built in heatsink and potted with heat conductive polyurethane to improving thermal dissipation. Ratified for IP67 operation and with a power efficiency of 95%, the DC/DC converter can be operated in ambient temperatures from -40C to +50C using free air convection. Suitable for 24V and 48V industrial bus voltages, the converter meets ISO7637-2 and EN12895. The ENA400-M’s high efficiency and highly optimized thermal design contribute to an increased lifetime in harsh environments. The ENA400-M series covers two industrial bus voltages, 24V (18 to 32V) and 48V (35 to 65V). The products include under-voltage, over-voltage and reverse-voltage protection. Saving battery power, in standby mode the input current is below 1mA, and the no load current is less than 30mA. “Industrial automotive manufacturers require energy efficient power supplies that are able to guarantee full operation in harsh environments yet are easy to use” says Martin Fredmark, Powerbox’s VP product management. “The ENA400-M series is part of PRBX’s ‘one package to fit all’ program developed with our customers that simplifies inventory management and reducing Time-to-Market.” Built on planar technology with thermal-drains and low ESR MOSFET technology, the ENA400-M has a typical power efficiency of 95%. By the use of a manufacturing practice known as ‘back-flip assembling’, the dissipated power is directly conducted from the components to the top of the case, thus increasing cooling capacity. The company’s DC-DC converter series has a galvanic isolation level of 500VDC input to output, and input/output to case. All products meet the immunity standard EN61000 (relevant chapters), the EN55022B (conducted and radiated) and a surge test level of 2kV.