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With 100V-tolerant inputs and internally fixed gain, STMicroelectronics’ TSC2020 bidirectional current-sense amplifier ensures high accuracy and saves space by eliminating external components typically needed for protection and gain-setting configuration. It addresses applications such as servers, power tools, industrial motor control, and power supplies. It is also AEC-Q100 qualified, allowing use in automotive applications such as motor-controlled window lifters, the battery management system (BMS), and traction inverters.
Suitable for high-side or low-side current sensing, the TSC2020 has a wide common-mode voltage range from -4V to 100V that allows use in 48V systems and at higher voltages. Precision internal circuitry ensures input offset voltage within ±150µV that helps to greatly reduce the external shunt resistor size, lowering power dissipation. Its ability to sense very low drop voltages helps minimize measurement errors. Common-mode rejection of at least 100dB ensures consistent accuracy when exposed to fluctuating common-mode voltages in applications such as inline motor control. Also, enhanced PWM rejection ensures high immunity to noise in motor drives and switched-mode power converters.
As well as saving external components, which reduces the bill of materials, the TSC2020’s fixed gain of 20V/V ensures high accuracy and stability with 0.3% gain error and 3.5ppm/°C drift. In addition, no trimming is required.
The TSC2020 is in mass production now and available in a choice of SO8 and Mini SO8 packages. Pricing starts at $1.20 for 1000 units and free samples are available from the ST eStore. Both industrial and automotive-grade versions are part of ST’s 10-years longevity program that ensures long-term product availability.
About STMicroelectronics
At ST (st.com), we are over 50,000 creators and makers of semiconductor technologies mastering the semiconductor supply chain with state-of-the-art manufacturing facilities. An integrated device manufacturer, we work with more than 200,000 customers and thousands of partners to design and build products, solutions, and ecosystems that address their challenges and opportunities, and the need to support a more sustainable world. Our technologies enable smarter mobility, more efficient power and energy management, and the wide-scale deployment of cloud-connected autonomous things. We are committed to achieving our goal to become carbon neutral on scope 1 and 2 and partially scope 3 by 2027.
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