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ACS772 Galvanically Isolated Current Sensor IC

Allegro MicroSystems

ACS772: 200kHz, 1.5% Max Tolerance, 100 µΩ Internal Resistance Module-alternative Current Sensor for High Current and High Voltage Applications

The ACS772 is an automotive grade, 200KHz Bandwidth Current Sensor IC in Allegro’s proprietary CB package. It offers a wide current sensing range (50A to 400A) and very low power loss achieved by the 100 μΩ internal resistance of its conductive path. The ACS772 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 3.3V (ACS773).
The ACS772 is ideal for Automotive application 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 ACS772 has a 2.5μs response time, which is the fastest response time IC ever offered in the custom Allegro CB package.

Product Number: ACS772, ACS773

Class: Current Sensor,PowerManagentIC(PMIC)

Tag: Internal Resistance Module-alternative Current Sensor IC, High Current Sensor, Galvanically Isolated Current Sensor IC

AEC-Q100 Grade 1 qualified
Typical of 2.5 μs output response time
5 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

OBC EV Charging Stations Inverters Power Supplies Overcurrent Fault Protection
Any High Accuracy Current Sensing Apps requiring--50A (continuous), 2.5μs response time AND high isolation.

Part Number Sensing Current Type Frequency Current - Supply Operating Supply Voltage Response Time Sensitivity Accuracy (%) Operating Temperature Supply Voltage Package Type
ACS772 DC / AC 250 kHz 15mA 5V 2.5µs 40mV/A ±0.9 -40 °C ~ 150 °C(TA) 4.5V ~ 5.5V 5-pin package (suffix CB)

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    Datasheet Download on Sep, 2021

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