TDK adds lower power option to EZA series with 2500W dc-dc converter

The high voltage range now covers 260-400Vdc and the lower voltage 36-65Vdc. The operating temperature is -10 to 50°C. Double sided protective board coating and long-life dust resistant fans have also been included.

The output voltage and current can be programmed and monitored using the RS-485 communications port, which can also be used to operate multiple units in parallel with “droop mode” current share.

For maintenance, alarm signals are also accessible, as well as remote on/off and under/over voltage functionality.

The high voltage (grid) to low voltage (battery) isolation is 3,000Vac, grid to ground 2,000Vac and battery to ground 500Vac.

Designed for energy storage systems with rechargeable batteries, the 2500W digitally controlled 1U power supply can change conversion direction from high voltage dc sources, powered by solar or wind, to 48Vdc batteries and vice versa.

The firm suggests applications including lithium-ion battery testing as well as the use of regenerated energy from robots, cranes, autonomous ground vehicles and lifts.

It can also replace large power resistors currently used for lift braking and use that previously dissipated energy to charge batteries.

Stored energy can be used to either provide peak power for high torque demands or as battery back-up for power cuts.

The dimensions for the converter are 43.6x423x400mm. The series is certified to the IEC/EN/UL 60950-1 and IEC/EN/UL 62368-1 safety standards with CE marking for low voltage, EMC and RoHS Directives.