スマート ホームおよび建物の自動化

This application note will describe the use of the new high current ACS772 Hall-effect current sensor integrated circuit (IC) from Allegro MicroSystems and will give an overview of its features and improvements from previous Allegro high-current sensors.

A recent breakthrough in Hall-effect sensing has enabled the creation of omnidirectional magnetic sensor ICs that match all of the requirements for tamper detection.

It can be challenging to sense currents exceeding 50 A because the task often involves thermal management, must take place in a limited PCB area, and in some cases, requires a voltage isolation device. Two widely used methods for sensing high currents are a sense-resistor/op-amp approach, and Hall-based current sensing.

This paper introduces Hall-effect technology, then explores how it has been applied, in particular, differentiating between the primary types of Hall sensor ICs and the highly differentiated range of sensing behaviors they can support.

AN296180 - This application note describes the I2C and SPI interfaces on the ACS71020/ACS37800 Power Monitoring ICs from Allegro MicroSystems.

Allegro’s ACS37800 offers its customers the capability to easily monitor and optimize the energy efficiency of power supplies, lighting, and motor control sub-systems in connected building automation solutions while simplifying the system design.