COSEL Expands Microprocessor Controlled Power Supplies For Industries

  • High power density (2.1W/cm3)
  • Active current and voltage paralleling – up to 10 units

Cosel Co Ltd has added to its power supply portfolio a 3000W AC-DC enclosed power supply for industrial and demanding semiconductors applications. Designed using COSEL’s advanced built-in digital microprocessor technology, the FETA3000BA includes active current sharing, making it simple to enable parallel connection up to 10 units for extra power or redundancy.

For high efficiency of up to 93 per cent, the FETA3000BA includes an active filter and uses a phase-shift, full-bridge topology. Addressing industrial applications and semiconductors equipment, the FETA3000BA complies with the SEMI F47 standard.

With an input voltage range of 170 to 264VAC, the FETA3000BA 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 per cent at 230VAC input.

Sophisticated integration for balanced control


Operated utilising COSEL’s digital microprocessor technology, the FETA3000BA series integrates a sophisticated voltage and current balance control. This simplifies a system integrator’s task when connecting up to 10 units in parallel or series, without adding any other external components. The advanced digital control also controls switching parameters to optimise efficiency, thus reducing energy consumption.

“Power supplies, which used to be a mass of analogue technologies, have been going through major changes since the turn of the century. Once controlled by switching devices on and off in an analogue circuit based on output voltage monitoring, they are now controlled digitally by microprocessors and software,” said Mr Todo, COSEL’s Manager of Unit Standard Design Department. “Cosel started to develop its own digital control technology at an early stage. By incorporating digital control technology into the analogue circuitry, Cosel has achieved power supplies with higher-level functions from which the FETA3000BA is fully benefiting”

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Optimised temperature regulation

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

Aimed at industrial environments, the FETA3000BA series can be operated within a temperature range of -10 to +70C, 20 – 90 per cent RH (Non-condensing), and up to 3,000m (10,000 feet) max altitude. Depending on cooling and assembling method, a power derating may apply.

The FETA3000BA includes an input filter and complies with FCC Part 15-A, CISPR32-A, EN55032-A, VCCI-A. In cases where a higher conducted noise attenuation is required, then the NAC-20-472 filter is recommended.

Designed for integrated industrial applications in 1U height, the FETA3000BA measures 102 x 41 x 340mm [4.02 x 1.61 x 13.39 inches] (WxHxD) and weighs 2.3kg max.

The device is suitable for a wide range of applications including measurement and analysis equipment, machine tools, and semiconductor manufacturing equipment.

The FETA3000BA complies with the semiconductor standard SEMI F47 which requires that semiconductor processing equipment tolerates voltage sags on their AC power line.



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