cupoftea
Advanced Member level 5
Are the attached type of pulse transformer gate drives a thing of the past?? (LTspice sim and jpeg scm attached)
In the age of gate drive chips like 1EDI20N, maybe the traditional gate drive transformer has had its day?
I have layed out the attached mainly because of its cheapness….i don’t particularly like the fact that when both drivers are off, as in shutdown, the FET is not “driven” OFF…but just relys on the ~3k3 gate pull down resistor to keep it off.
Also, it draws quite significant "bias" current.
1EDI20N datasheet:
In the age of gate drive chips like 1EDI20N, maybe the traditional gate drive transformer has had its day?
I have layed out the attached mainly because of its cheapness….i don’t particularly like the fact that when both drivers are off, as in shutdown, the FET is not “driven” OFF…but just relys on the ~3k3 gate pull down resistor to keep it off.
Also, it draws quite significant "bias" current.
1EDI20N datasheet: