ACS37612 Standalone Coreless Differential Current Sensor IC

Allegro's 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 greater than 1,000 A flowing through a PCB or busbar with a typical accuracy of 1%.

The differential Hall-based sensing topology used to measure the magnetic fields virtually eliminates error from common-mode stray magnetic field without the need of a laminated shield required by competing solutions, which reduces the design size and bill of materials (BOM). High isolation is achieved via the no-contact nature of this simple assembly. A 240 kHz bandwidth makes the device ideal for inverter phase current sensing, load detection and management, power supplies, and DC/DC converters where fast switching is required. The high response-time enables overcurrent fault detection in safety-critical applications. The ambient operating temperature range of -40°C to +150°C and a stellar ESD rating make this IC ready for harsh automotive environments.

The ACS37612 current sensor IC is offered in a low-profile 8-pin surface-mount TSSOP package (thin-shrink small outline package, suffix LU) that is ideal for space-constrained applications while allowing simple surface-mount assembly.