The MLX91210 IC is powered by a 5V power supply, the current sensitivity level is as low as 26.7mV/A, and supports a large ±75A, linear current measurement range equivalent to 30ARMS current. This fully integrated Hall effect current sensor is available in SO8 and SO16 packages, with very low resistance loss (SO8 is 0.8mΩ, SO16 is 0.7mΩ), and provides high voltage isolation levels (2.1kVRMS and 2.5KVRMS, respectively), And faster response (only within 5us). The sensor outputs of all ICs are factory calibrated for a specific current range, and compensated for the temperature-related, better stability during their operating life, thereby maintaining long-term accuracy.

Because the zero current output point and sensitivity are factory calibrated in advance, all devices provide a linear analog output proportional to the current flowing directly through the IC lead frame. Inside the IC package, the magnetic field generated by the current flow is differentially detected by two sets of Hall plates. This setting is used to counteract the effects of external magnetic fields and crosstalk. Close proximity of the Hall plate and the current conductor can achieve excellent signal integrity, but at the same time a strong insulating layer separates the primary and secondary sides. The device exhibits strong robustness to external magnetic fields, and as the density of power electronics designs increases, this will become more important. However, the key difference is that the hysteresis phenomenon, which is almost non-existent, is seen because the design does not require a ferromagnetic concentrator. The sensor supports a temperature range of -40°C to 125°C and complies with IEC-60950 (in addition, SO16 packaged devices follow UL1577).

Due to its high speed and compact size, the main applications of the MLX91210 chip that supports both DC and AC current measurement usually include: server farms and data centers, power supplies and converters, demand response load control, home/home appliance smart metering and smart energy, solar energy Converter and combiner box, and motor control.

"As the government establishes new legislative measures for financial problems caused by higher efficiency and rising energy costs, there is greater incentive in home and industrial environments to adopt compact current/power monitoring solutions." Melexis Corporation Magnetic Transmission Bruno Boury, Product Line Manager, Sensing explained, "This new high-speed device will raise the bar in current sensor technology. Due to its compact form factor, it combines sensing and isolation mechanisms in a tens of square millimeters package, and a very low With ohmic losses, thermal drift compensation characteristics, and crosstalk resistance, the device can be deployed to centralized electronic systems and still provide high levels of accuracy."