Current sensor IC suits space-constrained applications
Allegro Microsystems’ ACS37612 standalone coreless current sensor IC is now in stock at distributor Digi-Key.
It 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.
There are a nuber of applications. These include:
- High-voltage traction inverters
- Auxiliary inverters for integrated
- Starter generators (iBSG):
- 12 V and 48 V systems
- Direct connect or belt-driven systems
- Battery disconnect junction boxes
- Disconnect and smart fuse functions
- DC/DC converters
- Switching power supplies
- DC/DC converters
- DC/AC inverters
- Grid infrastructure and power distribution