电流检测

STMicroelectronics offers a comprehensive portfolio of current sense amplifiers designed for high accuracy, robustness, and wide operating conditions in automotive, industrial, and telecom applications.

High-voltage, bidirectional current sense amplifiers

Able to sense very low drop voltages as low as 10 mV, our TSC2010 (20 V/V Gain), TSC2011 (60 V/V) and TSC2012 (100 V/V) high-voltage bidirectional current sense amplifiers can sense the current thanks to a shunt resistor over a wide range of common mode voltages from –20 to + 70 V, regardless of the supply voltage. The TSC2010H, TSC2011H and TSC2012H are also available with extended temperature range (-40 to 150 °C); the STEVAL-AETKT1V2 kit can be used to evaluate the devices.

The TSC2020, TSC2021, and TSC2022 enables precision current sensing via a shunt resistor across a wide common-mode voltage range up to 100 V. These devices feature fixed gain options of 20 V/V, 50 V/V, and 100 V/V, supporting bidirectional sensing with very low drop voltages. AEC-Q100 qualified and available in SO-8 and MiniSO-8 packages, they are ideal for current monitoring, overcurrent protection, and feedback loops. The STEVAL-AETKT4V1 evaluation kit facilitates design integration.

Zero-drift current sense amplifiers

Based on a zero-drift architecture that delivers high performance for precision current sensing, the TSC210 / TSC211 / TSC212 / TSC213 / TSC214 / TSC215 feature exceptional precision and low offset while offering different gain. They can operate over a broad supply voltage range, from 2.7 to 26 V, and support temperatures ranging from -40 to 125 °C, making them ideal for industrial and automotive applications.  The STEVAL-AETKT2V1 evaluation board supports engineers in their design.

Current sense amplifiers with integrated comparator and reference

The TSC200, TSC201, and TSC202 provide analog voltage output with integrated open-drain comparators featuring output latches and a 0.6 V internal voltage reference. These AEC-Q100 qualified amplifiers support common-mode voltages from -20 V to +80 V and offer gains of 20 V/V, 50 V/V, and 100 V/V respectively, making them well-suited for overcurrent protection and system monitoring. To support developers in their designs is available the STEVAL-AETKT3V1 evaluation kit.

TSC240是一款支持高侧/低侧配置的双向零漂移电流检测放大器，专为精准电流测量而设计，具备增强的PWM噪声抑制能力。支持通过分流电阻检测-4 V至+100 V宽共模电压范围内的电流，且其检测能力与电源电压无关。TSC240具备20 V/V固定增益，可检测到非常低的压降，同时最大限度减少测量误差。

该放大器工作电压范围为2.7 V至5.5 V，工业级温度范围-40 °C至+125 °C，非常适合高精度电流检测、过流保护、电流监测及反馈控制应用。其关键特性包括：出色的直流共模抑制比 (132 dB)、低增益误差（最大0.20%）、极低偏移电压（最大±20 µV）以及低静态电流（最大2.4 mA）。

TSC240已通过AEC-Q100认证，提供SO8和TSSOP8封装，适用于电机控制、电磁阀与阀门控制、电源管理、工业过程控制，以及汽车应用和电信设备。