400 kHz, High Accuracy Current Sensor with Pin-Selectable Gains

ACS37002

MA-LA-MC Packages

Our 400 kHz ACS37002 family of sensors is cool under heavy workloads, with a compact, low power loss package that keeps temperatures down and can extend the life of a power system. These current sensors hit the right balance of high speed, high accuracy, and stability over temperature, making switched-mode power designs greener and more efficient—leading technology and the world to a more sustainable future.   

Description

Top Features

Typical Applications

Packaging

The ACS37002 is a 400 kHz fully integrated Hall-effect current sensor with very high accuracy, making it ideal for use in control loops of the most demanding power conversion applications. Current flows through the internal conductor coupling the magnetic field generated to the Hall sensor IC. As a result of no physical connection between the current and the IC, high-voltage isolation is achieved. The current is sensed differentially by two Hall plates that subtract out interfering external common-mode magnetic fields. The sensor is factory-trimmed to provide high accuracy over the entire operating range without the need for customer programming.

The sensor has an analog output and a reference output for signal integrity in noisy environments. A fast over-current fault output is included, having a user-configurable threshold via an analog input pin, providing short-circuit detection and enhanced system protection. The sensor also has four user-selectable gain options in the same device with two logic inputs without the need of extra components. This provides designers flexibility and minimizes the overall bill-of-material for systems that need different current sensing ranges.

The ACS37002 is available in three different SOICW-16 packages:

  • LA package is optimized for higher sensitivity and lower noise; 
  • MA package provides high isolation of 4.8 kVrms;
  • MC package is our newest package, combining best-in-class conductor resistance of 0.27 mΩ and highest isolation rating of 5 kVrms for applications where ultra-low power loss and high reinforced isolation are needed.
  • Wide operating bandwidth 400 kHz
  • Internal conductor resistance as low as 0.27 mΩ (MC package)
  • 1% Sensitivity error from -40 to 125ºC (KMA version)
  • Pin-selectable Gain Options (4)
  • Fast over-current detection 1.5 µs max response time

The ACS37002 is available in three different SOICW-16 packages: LA package is optimized for higher sensitivity and lower noise; MA package provides high isolation of 4.8 kVrms; MC package is our newest package, combining best-in-class conductor resistance of 0.27 mΩ and highest isolation rating of 5 kVrms for applications where ultra-low power loss and high reinforced isolation are needed.

MC Package Documentation

MA Package Documentation

LA Package Documentation

Part Number Specifications and Availability

Documentation and Resources

Documentation

Design Tools

Third Party Design Tools

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Mikroe Hall Current 16 Click