Fully integrated current sensors for high density applications

8th November 2019

Alex Lynn

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Allegro MicroSystems has announced significant ease-of-use enhancements to its high current fully integrated ACS772/3 current sensor ‘CB’ package family. These automotive grade high voltage isolation current sensors already provide economical and precise solutions for both AC and DC current sensing up to 400A.

Building on that leadership and deep customer-understanding, Allegro’s new surface-mount leadform option for the CB package is the answer to many customer challenges by providing a flexible solution for space constrained applications.

Shaun Milano, Business Unit Director for Current Sensors, said: “Our customers want flexibility, and we’re excited to provide these innovative, robust solutions in this new surface-mount option to complement our highly popular through-hole version. High current PCB designs improve power density and efficiency and this surface-mount option allows customers to realise these advantages with a simpler manufacturing process.”

The ACS772/3 family of current sensor ICs has an enhanced feature set that helps engineers simplify their bill of materials and improve efficiency in the toughest of applications:

Small form footprint over competing solutions.
Very fast 2.5µS response time that enables overcurrent fault detection - ideal for safety-critical applications.
Enhanced working isolation voltages up to 1,300kV+ for basic DC voltage, and 650V+ for reinforced isolation DC voltage - no need for opto-isolators or other costly isolation techniques.
High accuracy of +/-2.1% over the lifetime of the IC.

These features make the ACS772/3 family well suited for a range of applications from industrial robotics to electric vehicles.