Truly Coreless Current Sensors Are Here

Improve efficiency and reduce system cost in your EV applications

Coreless Current Sensors for High Voltage Traction Inverters

​Allegro offers coreless Current Sensing IC solutions that are high-bandwidth efficient, user-programmable, and equipped with safety features such as self-checks and isolation capabilities that make them ideal for use in inverters for EV applications.

ACS3761X Coreless Current Sensor ICs 

Enabling high current measurement (100 A to >4000 A) without the need for a concentrator core

The ACS3761X Hall-effect sensor IC solution family is a coreless and shield-free solution, reducing BOM and overall inverter size and weight. These differential sensors reject stray magnetic fields, reducing reliance on software. The family is optimized for a large range of currents, 100 A to >4000 A, making it ideal for automotive applications.

Key Features:

  • Up to 240 kHz sensor bandwidth
  • Contactless, lossless current sensing
  • 3.3 and 5.0 V single supply operation

Join the rEVolution

Allegro is helping the automotive industry meet demands for a greener future with sustainable, system-optimized, economical solutions for all your EV sockets.

Coreless Current Sensor Busbar Calculator

Allegro offers an online interactive modeling tool to help design busbars for coreless solutions. Calculate the coupling factor of a busbar and ACS37612 current sensor.

Busbar Calculator-3D model
Coreless Current Sensor Busbar Calculator

Guidelines For Designing a Busbar with Notch for Allegro's Coreless ACS37612 Differencial Current Sensor

Notched Busbar Design Guidelines For Coreless ACS37610 Differential Current Sensor

ACS37610 Busbar Geometry and Design Techniques  for Coreless Differential Current Sensors

Overcurrent Fault Detection Using ACS37610 Coreless Current Sensor

Transient Current Behaviors Using ACS37610 Coreless Differential Current Sensor

 

Coreless PCB Calculator (Zip)

ASEK37612 Demo Board User's Guide (PDF)

Featured Products
Allegro-8-Pin-TSSOP-LU-Package-600x400

ACS37610

The ACS37610 is a differential hall based SMT sensor for coreless current sensing in high current applications (100 A to >4000 A). The ACS37610 is the only coreless sensor with overcurrent and overtemperature for added safety.

Top Features:

  • Eliminates the need for a concentrator core or a shield
  • Wider Hall spacing for better resolution and thermals
  • Broken GND detection
  • 3.3 and 5.0 V single supply operation
  • User Programmable Sensitivity and Offset
  • Programable, enhanced safety features, high sensitivity & accuracy over temp
  • Low Noise Mode: Improved noise and accuracy performance on par with core-based solutions
Download Datasheet
Allegro-8-Pin-TSSOP-LU-Package-600x400

ACS37612

The ACS37612 is a standalone coreless current sensor IC that provides an economical and precise solution for AC and DC current sensing without requiring a magnetic concentrator core or a shield. The ACS37612 measures currents from 200 A to >1000 A flowing through a PCB or a busbar with a typical accuracy of 1%.

Top Features:

  • Eliminates the need for a concentrator core or a shield
  • Contactless, lossless current sensing for applications where current flows through busbar/PCB
  • Differential sensing rejects common-mode stray fields
  • 3.3 and 5.0 V single supply operation
  • Monolithic Hall IC for high reliability with up to 240 kHz sensor bandwidth
  • Factory-trimmed sensitivity and offset for improved accuracy
Download Datasheet