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A current sensor is a device that uses a magnetic sensor’s output to produce a signal proportional to the amount of current flowing through the circuit board and wiring. One of the current sensor varieties without a magnetic core is the coreless current sensor.
There are other ways to detect current, including using a cored current sensor.ASIC corrects and amplifies data from magnetic sensors, whereas magnetic sensors detect the magnetic field produced by the measured current flowing through the primary conductor.
Coreless current sensor IC has a fairly straightforward architecture.
Another benefit of coreless current sensor ICs is that insulation is simple to ensure. schematic for a cross-sectional view and see-through view of a general coreless current sensor’s package.
The principal conductor of a general-purpose coreless current sensor IC is covered with an insulation sheet inside the package, and the ASIC is affixed on top of that.
Additionally, the creepage and clearance distances between the primary conductor and the secondary terminal are assigned in order to obtain the desired insulation performance outside of the package.
The Global Coreless Current Sensors market accounted for $XX Billion in 2023 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2024 to 2030.
Without the need for a magnetic concentrator core or a shield, the ALLEGROMICRO ACS37612 is a standalone coreless current sensor IC that offers an affordable and accurate solution for AC and DC current detection.
With a typical accuracy of 1%, the ACS37612 measures currents from 200A to >1000A flowing via a PCB or a busbar.
Comparable systems require a laminated shield, but the differential Hall-based sensor topology essentially eliminates error from common-mode stray magnetic field, resulting in a smaller design and bill of materials (BOM).
Due to this straightforward assembly’s no-contact design, high isolation is achieved. It is perfect for inverter phase current measurement, load detection and control, power supply, and DC/DC converters because it has a 240KHz bandwidth.
