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200kHz, 1.5% Max Tolerance, 100 µΩ Internal Resistance Module-alternative Current Sensor for High Current, High Voltage Applications

ACS773

CA/CB 5 pin

ACS773 ECAD Model
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Description

Top Features

Typical Applications

Packaging

The ACS773 is an automotive grade, 200 KHz Bandwidth Current Sensor IC in Allegro's proprietary CB package. It offers a wide current sensing range (50 A to 400 A) and very low power loss achieved by the 100 μΩ internal resistance of its conductive path. The ACS773 achieve the highest performance in the CB package family with an accuracy of +/-2.1% over the lifetime of the IC from room to hot temperature. The 2.5 μs response time enables overcurrent fault detection in safety-critical applications while the Reinforced Galvanic Isolation reduces the bill of materials. It works off of a single 5 V supply (ACS772) or 3.3 V (ACS773).

The ACS773 is ideal for automotive applications such as OBC, DC/DC converters and inverter control as well as for industrial applications such as motor control, load detection and management and power supplies.

This sensor is provided in an Allegro custom CB package offering a very small form footprint, lower ICC and higher accuracy over current sensor modules offered by competing solutions. The ACS773 has a 2.5μs response time, which is the fastest response time IC ever offered in both the custom – through hole and custom – surface mount Allegro CB packages.

  • AEC-Q100 Grade 1 qualified
  • Typical of 2.5 μs output response time
  • 3.3 V supply operation
  • Ultra-low power loss: 100 μΩ internal conductor resistance
  • Reinforced galvanic isolation allows use in economical, high-side current sensing in high-voltage systems
  • 4800 Vrms dielectric strength certified under UL60950-1
  • Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques
  • Integrated shield greatly reduces capacitive coupling from current conductor to die due to high dV/dt signals, and prevents offset drift in high-side, high-voltage applications
  • Greatly improved total output error through digitally programmed and compensated gain and offset over the full operating temperature range
  • Small package size, with easy mounting capability
  • Monolithic Hall IC for high reliability
  • Output voltage proportional to AC or DC currents
  • Factory-trimmed for accuracy
  • Extremely stable output offset voltage
  • Available in ratiometric and non-ratiometric versions

Target Applications

 

 

The ACS773 has a 2.5μs response time, which is the fastest response time IC ever offered in both the custom – through hole and custom – surface mount Allegro CB packages.

CB PFF Package Documentation

CB PSF Package Documentation

CB PSS Package Documentation

CB SMT Package stp Model

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Part Number Specifications and Availability

Documentation and Resources