Accurate measurement with high-performance current sense amplifiers

Each time you manage batteries or motors, you need current sensing.

Sensing the current flow is fundamental in many systems such as motor control, battery management systems, and wireless infrastructure.

ST’s current sense amplifiers measure small voltage drops across shunt resistors with minimal error and offer excellent performance in many industrial and automotive applications. ST proposes a wide variety of current sensing able to measure the current either in bidirectional mode, or in unidirectional mode, but also able to address over-current protection features. ST’s current sense amplifiers offer the advantages of wide input common-mode voltage for high-side and in-line current sensing, and a cost-effective solution for low-side measurement.

Safety

Control

Status indication

Efficiency

Use cases and application examples

woman-electric-car

Protect your high-power systems in EV chargers

The management of the high-voltage ranges and the related protection are critical in high-power systems like electric vehicles charging systems.

motor-control

Enhance PWM rejection in (low voltage) motor control

In-line topology is one of the most efficient implementations for motor control applications.

telecom-antenna

Reduce energy consumption of base-stations applications

Monitoring and controlling the performance in the telecom industry is the key to maximize the power efficiency and minimize both the energy consumption and the impact on the environment.

car-sunset

Minimize error in your measurement loop with an extended temperature range

No need to sacrifice accuracy when you want to monitor current in harsh environments with temperatures up to +150°C.

Meet our current sensing portfolio

ST's current sense amplifier IC portfolio offers a large variety of high-performance devices:

  • High-voltage current sense amplifier: the TSC2020 can sense current via a shunt resistor over a wide range of common-mode voltages, from -4 to +100 V, to address a variety of voltage rails.
  • Current sense amplifier with open-drain comparator and reference: the TSC200/201/202 integrates an open-drain comparator with output latch function and an internal 0.6 V voltage reference connected to its input.
  • Current sense amplifiers with extended temperature: the TSC2010/2011/2012 are available in both industrial and extended temperature range.
  • Current sense amplifiers based on zero-drift architecture: the TSC210/211/212/213/214/215 can sense current via a shunt resistor over a wide range of common-mode voltages from -0.3 to +26 V, whatever the supply voltage is.

 

Accuracy

Input voltage

Direction

Configuration

Gain

Grade

Temperature range

Discover more

TSC2020

150 μV

-4 to 100 V

Bidirectional

low-side
high-side

x20

Automotive
Industrial

-40 to 125°C

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TSC200 TSC201 TSC202

2.5 μV

-16 to 80 V

Unidirectional

low-side
high-side

x20
x50
x100

Automotive
Industrial

-40 to 125°C

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TSC2010 TSC2011 TSC2012

200 to 500 μV

-20 to 70 V

Bidirectional

low-side
high-side

x20
x60
x100

Automotive
Industrial

-40 to 150°C

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TSC210 TSC211 TSC212 TSC213 TSC214 TSC215

35 to 100 μV

-0.3 to 26 V

Bidirectional

low-side
high-side

x200
x500
x1000
x50
x100
x75

Automotive
Industrial

-40 to 125°C

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Key features

  • High-precision current sensing to reduce shunt resistor size
  • Integrated gain to reduce numbers of components vs. discrete solution
  • Integrated gain to obtain better gain accuracy vs. discrete solution
  • Extended temperature range for wide application uses
  • High ESD tolerance ensured for more robustness