Features
Power_electronics Features

Benefits of CoolSiC MOSFETs in Bi-Directional Inverter Applications - July 2021
With the move to renewable energy, there is an increased focus not only on generation but also storage, to make the most of the intermittent supply from wind and solar. Batteries are the common...
More details...
Power Electronics Europe News
 
Linear Hall current sensor shows versatility

Instead of shunt resistors, current transformers or magnetic field sensors, Hall-effect sensors are frequently the choice when measuring DC currents, however, says Melexis, the MLX91209CA can be applied in all current sensing situations.

The high speed, linear Hall IC has a programmable sensitivity range from 5 to 150mV/mT, for measuring DC and AC currents up to 200kHz.

Calibration is done via PTC (Programming Through Connector) protocol. This modulates the supply voltage and does not require any additional pin for programming, for efficient production flows, says the company. A linear analogue output permits the use of the sensor in applications where a very fast response of 3µs is required. Custom calibration is best performed in-situ after the sensor is fixed with respect to the current conductor and ferromagnetic core so that a calibrated current sensitivity is achieved. Typical accuracy of a system based on the IC is better than ±0.5% at room temperature or ±2% over -40 to 125°C, when applying in-circuit end of line calibration.

 

 



View PDF
 
Go Back   
Newsletter sign up

Sponsors