意法半导体高度集成的低边电流检测放大器简化了高精度传感

时间：2025-06-06 16:08:01

关键字：意法半导体 TSC1801

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[导读]STMicroelectronics’ TSC1801 low-side current-measurement amplifier integrates matched resistors to set the gain, which simplifies the circuit design, saves bill-of-materials costs, and ensures gain accuracy within 0.15% over the entire temperature range. The fixed gain also eliminates production trimming of external resistors.

Highly integrated low-side current-measurement amplifier simplifies high-accuracy sensing

高度集成的低边电流检测放大器简化了高精度传感

STMicroelectronics’ TSC1801 low-side current-measurement amplifier integrates matched resistors to set the gain, which simplifies the circuit design, saves bill-of-materials costs, and ensures gain accuracy within 0.15% over the entire temperature range. The fixed gain also eliminates production trimming of external resistors.

意法半导体的TSC1801 低边电流检测放大器集成了匹配的电阻器来设置增益，在简化电路设计的同时，还节省了材料成本，并确保在整个温度范围内增益精度在0.15%以内。不仅如此，固定增益还消除了外部电阻器的生产微调。

Combining very high accuracy and wide bandwidth, the TSC1801 is used for motor control, solar power conditioning, high-bandwidth current sensing, and automotive power conditioning. The first gain value offered is 20V/V, with 5V/V and 50V/V models to follow.

TSC1801结合了极高的精度和宽带宽，可用于电机控制、太阳能调节、高带宽电流检测和汽车功率调节。其提供的第一个增益值是20V/V，随后是5V/V和50V/V型号。

Capable of bidirectional current sensing, the amplifier is optimized for use with precision low-value shunt (sense) resistors at low common-mode voltages. The architecture, dedicated to low-side sensing, permits tightly controlled parameters, including total output error better than 0.5% and offset voltage of ±200μV (max).

该放大器能够进行双向电流检测，经优化可在低共模电压下搭配使用精密低值分流（检测）电阻器。该架构专门用于低边检测，可严格控制参数，包括优于0.5%的总输出误差和±200μV（最大）的偏移电压。

The TSC1801’s 2.1MHz bandwidth rating allows pulse-by-pulse current control even in very high-frequency power-management systems, translating to tangible benefits such as smoother torque adjustment for lower vibration in motor drives. The amplifier’s fast response also ensures rapid over-current detection, protecting sensitive output-stage components against being damaged in the event of a fault.

TSC1801的2.1MHz带宽额定值允许在非常高频的电源管理系统中进行逐脉冲电流控制，从而带来切实的好处（例如更平滑的扭矩调整，以降低电机驱动器的振动）。放大器的快速响应还确保了快速的过电流检测，保护敏感的输出级组件在发生故障时免受损坏。

The device can accommodate a wide supply voltage range (2.0V to 5.5V) with an operating temperature range of -40°C to +125°C. Automotive versions are available, qualified and characterized according to AEC-Q100 and Q003 or equivalent, with advanced screening according to AEC Q001 and Q002 or equivalent.

器件可适应较宽的电源电压范围（2.0V至5.5V），工作温度范围为-40°C至+125°C。另有车规级版本提供，已根据AEC-Q100和Q003或同等标准进行了认证和鉴定，同时依照AEC Q001和Q002或同等标准进行了高级筛选。

In addition to its use in automotive and motor-control applications, the TSC1801 is expected to find applications in industrial, server and telecom infrastructure power conversion, power factor correction and high-accuracy signal conditioning.

除汽车和电机控制领域外，TSC1801还有望在工业、服务器和电信基础设施的功率转换、功率因数校正和高精度信号调理中得到应用。

The industrial-grade TSC1801BILT with fixed gain of 20V/V is in production now in a 6-lead SOT23 dual-in-line package, priced from $0.54 for orders of 1000 pieces. The automotive-grade version will be available in Q2 2025.

工业级 TSC1801BILT（固定增益20V/V）现已进入量产阶段，采用6引脚SOT23双列直插式封装；千片起订单价0.54美元。其车规级版本将于2025年第2季度上市。

Need more low-side current sense amplifiers? Explore our selection of cutting-edge current sensing solutions.

是否需要更多低边电流检测放大器？探索我们精选的尖端电流检测解决方案。