Allegro MicroSystems ACS773 200kHz Automotive Current Sensor ICs

Allegro MicroSystems ACS773 200kHz Automotive Galvanically Isolated Current Sensor ICs offer a wide current sensing range (50A to 400A) and very low power loss in a proprietary CB package. The ACS773 achieves high performance with an accuracy of ±2.1% over the lifetime of the IC from room to hot temperature. The 2.5μs response time allows overcurrent fault detection in safety-critical applications while the reinforced galvanic isolation reduces the bill of materials. Furthermore, the ACS773 operates off of a single 3.3V supply.

The Allegro MicroSystems ACS773 200kHz Automotive Current Sensor ICs are designed for automotive applications such as OBC, DC/DC converters and Inverter control, and industrial applications such as motor control load detection and management, and power supplies.

The ACS773 Current Sensor ICs are available in a custom CB package offering a minimal form footprint, lower ICC, and higher accuracy over competing current sensor modules.

Features

AEC-Q100 Grade 1 qualified
Typical of 2.5μs output response time
3.3V supply operation
Ultra-low-power loss of 100μΩ internal conductor resistance
Reinforced galvanic isolation allows use in economical, high-side current sensing in high-voltage systems
4800Vrms 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

Applications

OBC
EV Charging stations
Inverters
Power supplies
Industrial motor control
Overcurrent fault protection

Any high accuracy current sensing apps requiring >50A (continuous), 2.5μs response time, and high isolation

Allegro MicroSystems ACS773 200kHz Automotive Current Sensor ICs

Features

Applications

Typical Application

Functional Block Diagram

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