Whether you need to detect an overcurrent fault, improve system efficiency, or provide closed-loop feedback, TI's large portfolio of isolated and non-isolated current-sensing solutions enables industry-leading accuracy for a range of common-mode voltages and temperatures – without sacrificing system size, complexity or cost.
Why choose TI for your current-sensing system?
Compare isolated current-sensing technologies
Isolated current-sensing technologies
Hall-effect current-sensing resources
A Hall-effect current sensor is a type of inherently isolated sensor. Current passing through the primary side of the package generates a magnetic field, which is detected by the Hall element. The Hall element provides a proportional analog voltage output signal, depending on the magnitude of the magnetic field, that a microcontroller with an integrated analog-to-digital converter can read.
Learn more about this key product category:
Simplifying high-voltage sensing with Hall-effect current sensors
Improve High-Voltage System Efficiency With Zero-Drift Hall-Effect Current Sense (Rev. A)
Low-Drift, Precision, In-Line Isolated Magnetic Motor Current Measurements (Rev. A)
TMCS2100-Q1ACTIVE
Isolated shunt-based sensing resources
Shunt-based current sensing is implemented in both low- and high-voltage solutions. For high-voltage current sensing, isolation is required in the form of an isolated analog front end (enabled by digital isolators or isolated amplifiers) or a data converter with built-in isolation (enabled by isolated ADCs). Explore our isolated ADCs and amplifiers for direct connection to your shunt, and explore digital isolators to enable non-isolated data converters.
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Accuracy Comparison of Isolated Shunt and Closed-Loop Current Sensing
Comparing Isolated Amplifiers and Isolated Modulators (Rev. B)
Design considerations for isolated current sensing (Rev. A)
AMC1306M25ACTIVE
Current transformer sensing resources
Current transformers offer accurate measurements across a focused current range and bandwidth by using windings around various types of cores. Current transformers output a reduced current proportional to what is on the primary side, which is fed into a shunt for measuring. This output typically requires amplification to be measured by a data converter, but some data converters have integrated amplification stages.
Explore our portfolio of non-isolated data converters to enable precision sensing, or our amplifier portfolio if external signal amplification is necessary to feed into an analog-to-digital converter.
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Three-phase current transformer e-meter reference design with stand-alone ADC
Low-Side Current Sense Circuit Integration
Single-supply, low-side, unidirectional current-sensing circuit (Rev. A)
Rogowski coil sensing resources
Rogowski coils offer measurements across a wide current range and bandwidth because of their coreless design (since the saturation of a magnetic core typically is what limits range and bandwidth). Rogowski coils output a derivative of the current signal they are measuring and require either a discrete solution or software integration to accurately read the signal.
Explore our portfolio of non-isolated data converters to enable precision sensing, or our amplifier portfolio to enable discrete signal conditioning.
Learn more about these key product categories:
High-Side Drive, High-Side Solenoid Monitor With PWM Rejection (Rev. D)
Current Sensing in an H-Bridge (Rev. D)
Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D)
Choose your isolated current-sensing solution
Non-isolated current-sensing technologies
Measuring current in a power rail before a load or remainder of the circuit
In high-side current sensing, placing a shunt resistor between the bus voltage and the system load eliminates ground disturbances because the shunt resistor is no longer connected directly to ground. High-side current sensing also detects load short-to-ground conditions. We offer many devices with high-voltage capabilities and a high common-mode rejection ratio (CMRR) that accurately measure current on high-voltage rails.
Learn more about these key high-side product categories:
Bringing design simplicity, low drift, and small size to integrated-shunt solutions
Precision Current Measurements on High-Voltage Power-Supply Rails (Rev. F)
Using An Op Amp for High-Side Current Sensing (Rev. A)
Measuring current in the return path to ground
Low-side current sensing has a shunt resistor in between the load and ground. One advantage of low-side measurements is that the common-mode voltage is near zero. The disadvantage is that the voltage drop across the shunt resistor appears as a difference between the supply ground and the load or system ground. We offer a wide range of amplifiers that enable low-side sensing in high-accuracy and cost-sensitive applications.
Learn more about these key low-side product categories:
Do I need more slew rate or bandwidth in my high-speed, low-side current shunt mea
Low-Side Current Sense Circuit Integration
Single-supply, low-side, unidirectional current-sensing circuit (Rev. A)
In-line current sensing for fast switching common-mode transient voltages (dv/dt)
In-line current sensing offers true phase-current measurements for optimizing the quality of inverter or motor feedback information for closed-loop control. In such applications, the common-mode voltage is a pulse-width-modulated (PWM) signal, which disrupts the output signal (unless PWM rejection circuitry is enabled) and leads to more strenuous requirements for the current-sense amplifier, which must have a very good DC and AC common-mode rejection ratio (CMRR). We offer devices with both enhanced PWM rejection and high CMRR.
Learn more about these key in-line product categories:
High-Side Drive, High-Side Solenoid Monitor With PWM Rejection (Rev. D)
Current Sensing in an H-Bridge (Rev. D)
Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D)
Current sensing for fast alerts or out-of-range conditions
Overcurrent protection is the most basic form of current monitoring for fast detection of out-of-range or fault conditions. Our portfolio includes high-bandwidth and slew-rate devices, as well as integrated comparator/alert devices for fast throughput to enable this safety feature.
Learn more about these key overcurrent protection product categories:
Over-Current Detection Products Brochure
Overcurrent Sensing Techniques
Isolated Overcurrent Protection Circuit
Low current measurements in submilliamperes
A low-input bias current sensor is necessary to minimize errors when measuring low currents. With standard amplifier input bias currents, the bias current will exceed the measurement current, resulting in diminished accuracy and a low signal-to-noise ratio. We offer amplifiers with nanoampere input bias currents to enable high-accuracy submilliampere measurements.
Learn more about these key submilliampere product categories:
Difference Between an Instrumentation Amplifier and a Current Sense Amplifier
Low (microamp), high-side, current-sensing circuit with current-sensing amp (Rev. A)
Super-Beta Input Amplifiers: Features and Benefits
Browse non-isolated products by category
Common-mode voltage < supply voltage
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Explore current-sensing trends in EV charging and solar energy
As the world adopts renewable energy sources, the need for accurate and reliable current sensing is growing. From Hall-effect sensors to shunt-based devices, we help engineers design fast, accurate and safe high-voltage systems.
Learn about related technologies
Isolation
Achieve superior reliability with devices designed to address the demands of high-voltage systems
High voltage
Achieve superior reliability with devices designed to address the demands of high-voltage systems