Texas Instruments introduced a reinforced isolated amplifier with what it claims are the highest reliability, lowest power consumption, highest DC accuracy and improved overall efficiency compared to competitive devices. The AMC1301 is the newest addition to the company’s reinforced isolation portfolio, which features the industry’s highest working voltage specifications.
With offset drift of just 3 μV/°C over the temperature range from -40°C to 125°C, the chip delivers a highly accurate solution for shunt-based current sensing in high-voltage equipment such as industrial motor drives, solar inverters, battery management systems and uninterruptible power supplies.
The AMC1301 has a working breakdown voltage of 1000 Vrms for a minimum insulation barrier lifetime of 64 years, which exceeds VDE0884-10 requirements. Like all of the isolated devices in TI’s portfolio, the AMC1301 has no relevant lifetime degradation, unlike optical components.
With an offset error maximum of 200 μV, very offset drift and linearity of 0,03%, the AMC1301 enables engineers to design the most accurate systems using an isolated amplifier over the widest temperature range, without having to compensate for DC and temperature drift errors.
A TINA-TI SPICE model and TINA-TI reference design are available for the AMC1301 to help designers verify board-level signal-integrity requirements. A TI Designs reference design is available, which allows designers to use the AMC1301 to jump-start design of a cost-efficient reinforced isolated power stage in three-phase inverters, with the benefits of reduced power supply requirements and protection against DC bus under- and over-voltage.
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