ACS37612: Standalone Coreless Differential Current Sensor IC

Description

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 200A to >1000A flowing through a PCB or a busbar with a typical accuracy of 1%.   

The differential Hall-based sensing topology used to measure the magnetic field 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 240KHz bandwidth makes it 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. A –40°C to 150°C ambient operating temperature and a stellar ESD rating make it ready for the harsh automotive environment. 

The ACS37612 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. 

Typical Applications:

Automotive

  • High voltage traction inverters
  • Auxiliary inverters for integrated
  • Starter generators (iBSG)
    • 12V and 48V systems
    • Direct connect or belt driven systems.
  • Battery disconnect junction boxes
  • Disconnect and smart fuse functionsDC/DC converter

Industrial

  • Switching power supplies
    • DC/DC converters
    • DC/AC inverters
  • Grid infrastructure and power distribution

Top Features

  • Eliminates the need for a concentrator core or a shield
  • Contactless, lossless current sensing for applications where current flows through busbar or 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

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
ACS37612LLUATR-005B5 8-lead TSSOP -40°C to 150°C Yes View Data New Contact your
local sales rep
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Distributor Stock
ACS37612LLUATR-010B3 8-lead TSSOP -40°C to 150°C Yes View Data New Contact your
local sales rep
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ACS37612LLUATR-010B5 8-lead TSSOP -40°C to 150°C Yes View Data New Contact your
local sales rep
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ACS37612LLUATR-015B5 8-lead TSSOP -40°C to 150°C Yes View Data New Contact your
local sales rep
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Distributor Stock
ACS37612LLUATR-015U5 8-lead TSSOP -40°C to 150°C Yes View Data New Contact your
local sales rep
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Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.