Allegro MicroSystems Current Sensing Alternatives to Shunt Resistors
Allegro MicroSystems has developed magnetic current sensors as an alternative to traditional shunt-based current sensing circuits. These current sensors are designed to create compact and energy-efficient electronic systems with greater isolation, higher bandwidths, and improved performance. The integrated shunt-less sensor solutions feature a lower heat dissipation for cooler system temperatures and a simplified design process by combining a traditional shunt resistor circuit functionality into an individual package. The magnetic current sensors are significantly smaller than conventional shunt-based circuits, which saves board space and reduces the number of required components. Allegro MicroSystems current sensing alternatives to shunt resistors are ideal for various industries, including clean energy, industrial motor drivers, personal mobility, and automotive.
Videos
Allegro Current Sensors vs. Other Solutions
Resources
Comparing Parameters of Shunt-based and Hall-based Current Sensors
Current sensing is a common requirement in many electrical systems and can be achieved with various solutions. This application note focuses on Allegro integrated conductor Hall-effect current sensors.
DC and Transient Current Capability/Fuse Characteristics of Surface-Mount Current Sensor ICs
Allegro MicroSystems offers a broad product family of current sensor IC solutions with integrated conductors. In the current path, it is important
to understand how the ICs behave when subjected to currents above their rated nominal capability due to short circuits, inrush currents, or other transient conditions.
Magnetic Sensors are a Great Alternative to Traditional Shunt Resistors for Industrial Current Sensing
Magnetic sensors have entered the market, bringing a whole new level of performance, safety, and reliability to the table. This blog shows the benefits of utilizing magnetic sensors rather than shunt resistors.
Techniques to Minimize Common-Mode Field Interference When Using Allegro Current Sensor ICs
The Allegro MicroSystems current sensor ICs feature a common-mode field rejection (CMR) mechanism, and this application note focuses on how to best use this mechanism through optimized circuit board design and layout.
Featured Products
Allegro MicroSystems ACS37220 Low-Resistance Current Sensors
Housed in a 7-pin QFN package and accurately measure currents up to 200A.
Allegro MicroSystems ACS71240 Current Sensor ICs
Provides next-generation improvements over the ACS711 Current Sensor ICs.
Allegro MicroSystems ACS711 Hall-Effect Linear Current Sensors
Provides precise solutions for AC or DC current sensing in <100V audio & communication systems.
Allegro MicroSystems ACS3704x Leaded Magnetic Current Sensors
Provide galvanically isolated voltage output proportional to the sensed current.
Evaluation Boards
Allegro MicroSystems ACS37220 EZ Package Evaluation Boards
Allow for evaluating current sensors in a lab setting without needing a custom circuit board.
Allegro MicroSystems Current Sensor Evaluation Boards
Allows quick evaluation of Allegro Current Sensors without needing a custom circuit board.
Mikroe MIKROE-2987 Hall Current 2 Click
Features a very low series resistance of 1.2mΩ and makes the device a nearly-perfect ampere meter.
Mikroe MIKROE-6464 Hall Current 20 Click
A compact add-on board developed for the ACS37220LEZATR-150B3 low-resistance current sensor.