Isolated gate drivers and EMI noise

3rd January 2020
Posted By : Joe Bush
Isolated gate drivers and EMI noise

In power electronics isolated gate drivers are used to drive power semiconductors like IGBTs and power MOSFETS. The gate drivers are used to provide galvanic isolation between the control circuits and the high voltages. They are also used for level shifting to provide high gate voltage and current to switch the IGBT. In industrial applications like inverters and motor drives, EMI noise will be generated by an inductive mode-like motor. The noise may cause reflection, resonance or amplification within the gate drivers and inside the power electronic equipment by its coupling through the wiring.

This will cause the gate drivers to malfunction with erroneous output and worse, be permanently damaged. To meet stringent requirements for functional safety in motor drives and inverters it is very important for the gate drivers to be immune to EMI noise.

ElectroNews explain more in the instructional video below.


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Vietnam International Defense & Security Exhibition 2020
4th March 2020
Vietnam National Convention Center, Hanoi
The Sensor Show 2020
16th June 2020
Germany Messe Munich