3kW AC-DC supply uses digital control for power sharing

February 25, 2020 //By Nick Flaherty
Cosel's FETA3000BA 3kW AC-DC power supply includes active current sharing to allow up to 10 units to be used in parallel for industrial or semiconductor equipment
Cosel's FETA3000BA 1U 3kW AC-DC power supply includes active current sharing to allow up to 10 units to be used in parallel for industrial or semiconductor equipment

Japanese power giant Cosel has launched a digitally-controlled 3kW AC-DC power supply for industrial and semiconductors applications.

The FETA3000BA includes active current sharing to allow  up to 10 units to be used in parallel for extra power or redundancy. The AC-DC power supply includes an active filter and uses a phase-shift, full-bridge topology offering an efficiency level of up to 93 percent. Addressing industrial applications and semiconductors equipment, the FETA3000BA complies with the SEMI F47 standard which requires that semiconductor processing equipment tolerates voltage sags on their AC power line.

With an input voltage range of 170 to 264VAC, the FETA3000BA-48 delivers an output voltage of 48VDC, adjustable from 38.40 to 52.80VDC using the built-in potentiometer, or 15.00 to 52.80VDC when using the trimming function available at the rear connector. The nominal output current is 62A and efficiency is up to 93 percent at 230VAC input.

The AC-DC power supply uses Cosel’s processor technology to implement a sophisticated voltage and current balance control algorithm. This simplifies system integrators’ task when connecting units in parallel or series. The digital control also controls switching parameters to optimize efficiency, reducing energy consumption.

To reduce audible noise, the FETA3000BA series is equipped with a thermo-regulated fan whose speed is automatically adjusted to optimize cooling for specific environments.


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