Amplifier has low power consumption and high reliability for solar inverters

Claimed to have the highest reliability, lowest power consumption, highest DC accuracy and improved overall efficiency compared to competitive devices, the AMC1301, is the latest addition to Texas Instruments’ reinforced isolation portfolio.

According to the company, it has the lowest offset drift of 3microV/C over the widest temperature range of -40 to 125degree C, to deliver accurate, shunt-based current sensing in high-voltage equipment, such as industrial motor drives, solar inverters, battery management systems and uninterruptible power supplies.

It is also claimed to be the industry’s first isolated amplifier with a working breakdown voltage of 1,000V rms for a minimum insulation barrier lifetime of 64 years, which exceeds VDE0884-10 requirements. There is no relevant lifetime degradation, unlike optical components, says the company.

At 55 per cent less high-side supply current and 45 per cent less low-side supply current than competitive devices, the amplifier improves power efficiency, simplifies power supply design and reduces thermal drift issues for a more efficient system design and improved performance.

The lowest offset error maximum of 200microV, the lowest offset drift and the best linearity of 0.03 per cent, enables engineers to design an accurate system using an isolated amplifier over a wide temperature range, without having to compensate for DC and temperature drift errors.

The amplifier is supported with the TINA-TI SPICE model and TINA-TI reference design, the AMC1301EVM evaluation module and TI Designs reference design.

The amplifier is available now in a 5.85 x 7.5mm SOIC package.


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