ACS37610: Low Noise, Standalone, Coreless Differential Current Sensor IC with Overcurrent and Overtemperature Detection

To learn more about Allegro's coreless current sensing solutions, please visit  allegromicro.com/coreless »

Description

The ACS37610 provides a highly accurate method of measuring 100 A to >4000 A flowing through a busbar or a PCB without needing a concentrator core or a U-Shaped Magnetic Shield reducing system complexity, bill of material (BOM), cost, footprint, and weight. The differential measurement provides excellent immunity to stray magnetic fields without the need for a magnetic shield that often slows down the response time and adds non-linearity error. 

The ACS37610 features advanced Hall elements, resulting in a 2.5× improvement in signal-to-noise ratio (SNR) and a 2× lower noise relative to the ACS37612 while achieving a typical accuracy of 1% across an extended ambient temperature range: –40°C to 150°C. The lower noise provides superior resolution required for accurate torque control, while the sensor’s 4× higher sensitivity range enables flexible busbar and PCB designs 

A dedicated overcurrent and overtemperature fault pin, a 250kHz bandwidth and a slew of built-in diagnostics make it ideal for safety-critical applications. Accuracy is enhanced by user programmability, which allows the device to be optimized in the application and cancels errors due to mechanical assembly tolerances.  

The ACS37610 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 Motor Inverter 
  • 48 V / 12 V Auxiliary Inverter (Starter Generator) 
  • Heterogeneous Redundant Battery Monitoring 
  • Overcurrent Detection 
  • DC/DC Converter 
  • Smart Fuse 
  • Power Distribution Unit (PDU) 

Industrial 

  • Switching Power Supplies 
  • DC/DC converters 
  • DC/AC inverters 
  • Grid Infrastructure and Power Distribution 

Top Features

  • Differential Hall-based sensing provides immunity to stray magnetic fields while eliminating large and expensive concentrating cores and shields.
  • Quick overcurrent and overtemperature fault output ideal for safety critical applications
  • Wide current sensing range (100 A to >4000 A) with single busbar or PCB design
  • High customer programmability and lower noise provide high accuracy (<1% typ)
  • High isolation and reliability is achieved with up to 250 kHz sensor bandwidth 
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.
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.

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
ACS37610LLUA-005B5 8-lead TSSOP -40°C to 150°C -- View Data New Contact your
local sales rep
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Distributor Stock
ACS37610LLUA-010B3 8-lead TSSOP -40°C to 150°C -- View Data New Contact your
local sales rep
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ACS37610LLUA-010B5 8-lead TSSOP -40°C to 150°C -- View Data New Contact your
local sales rep
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Distributor Stock
ACS37610LLUA-020B5 8-lead TSSOP -40°C to 150°C -- View Data New Contact your
local sales rep
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Distributor Stock
ACS37610LLUA-020U5 8-lead TSSOP -40°C to 150°C -- View Data New Contact your
local sales rep
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Distributor Stock

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