Powerbox launches seven ruggedized DC-DC and AC-DC power supplies

February 22, 2017 // By Nick Flaherty
Powerbox has launched a line of ruggedized off-the-shelf power supplies for highly demanding environments.

The launch includes seven series of power supplies, comprising three DC/DC (DAA-DAB-DAC), four AC/DC (DBA-DBB-DBC-DBD) with power ranges from 50W up to 1,200W. 

In metal chassis format with a baseplate for conduction cooling, the DAx and DBx series can be used with a baseplate operating temperature range of -40 up to +100 degrees C. For extremely demanding applications they can be configured with a conformal coating with electric and mechanical ruggedization for harsh transients and demanding EMC performance requirements as required with most common defense, marine, avionics, rugged industrial and railway standards. Designed for high availability, short time-to-market and to meet commercial and military off-the-shelf (COTS/MOTS) business models, the modular build style of the DAx and DBx series allows up to six outputs which can be connected in serial, parallel or used as a standalone output.

The Defense Line DC/DC DAA/DAB/DAC power supplies include a very efficient input filter, reverse voltage protection internal diode, input transient protection and an internal fuse to protect against damage in the event of failure. Each output is protected against accidental and permanent short-circuit situations. An internal over-temperature circuit (OTP) protects the units in the case of over-heating, with automatic recovery. To cover the large range of applications in defense or ruggedized industrial areas, the DAA/DAB/DAC series is available for use with five input bus voltages, 12, 24, 48, 72, and 110VDC and with a large range of output voltages from 3.3VDC up to 48VDC. Each output voltage is adjustable, and higher power outputs are compensated using the provided senses.

For safety and galvanic insulation purposes, the DAA/DAB/DAC has an electrical strength of 1,500Vrms input to ground, 3,000Vrms input to output and 500Vrms output to ground. The series complies with safety standards IEC and EN60950-1 and for railway applications it is designed to meet EN50155 and EN50121. The DAx series units can also be configured for harsh transient performance on 12V and 28V platforms according to MIL-STD-1275 and DEF STAN 61-5 as well as for avionics applications according to MIL-STD-704, DO-160 and ABD100. For environmental protection the DAx series can be configured to meet MIL-STD-810 along with the railway, avionics and marine requirements. The DAx series’ EMC performance is designed according to 55022 class A and optionally can also meet MIL-STD-461 conducted emission.

The DAA 150-500W measures 225 x61 x 35mm (8.86 x 2.40 x 1.38 in), the DAB 75-300W is 140 x 61 x 35mm (5.50 x 2.40 x 1.38 in) and the DAC 50-150W is 100 x 61 x 35mm (3.93 x 2.40 x 1.38 in).

"The release of Powerbox Defense Line products strengthens Powerbox’s COTS/MOTS product offering ‘when standard is not enough’ “, says Martin Fredmark, VP Product Management at Powerbox. “Combining state of the art design with a built in flexibility for demanding applications such as defense and avionics, our flexible, modular design concept further enhances our service leadership strategy.”

Next: AC/DC Line