4 pin vs 3 pin

[User17687]

Hi,

the title already reveals what my question is about:

What are the advantages of the 4 pin over the 3 pin device? Why does an aux. Source connection help?

Thanks in advance!

[å__å__ · Accepted solution]

4 pin have an aux. Source connection could help to improve the switching efficiency ,the turn on loss is around 60%~70% , tun off loss is around 80% when compare with 3pin.
It is also good for the parallel usage.The separate Kevin Pin sperate itself with the E pin which conducting the high current ,without the attenuation of the gate voltage coming from the power emitter, the switching of the IGBT becomes faster than in the standard TO-247 package.