2 switch flyback converter gate driving problems

[BlackMelon]

Hello,

In an arc welder, there is the converter like this:

For its driving system, there are two driving systems, which are the same but completely isolated from each other to apply driving signals to the gate and the source of each power mosfet

My question, according to the attached picture, is:

1. How does this group of components function ?
2. Is it ok to remove these components and apply the square wave directly to the gate and source of each power mosfets presented in the link?

Thank you
BlackMelon

 

[treez]

the circuitry looks like what you might get at the output of a pulse transformer drive, but it looks too complex. All you need is either a standard high side pulse transformer drive with "DC restore" and "PNP turn-off". Or alternatively just use a high side bootstrap drive ic such as a NCP5181

 

[Easy peasy]

This is a forward converter - not flyback, the gates will only tolerate +/- 20V, so 50V is too high, there may be resistors on the gates (or should be) that drop the volts to acceptable levels and stop the devices pulsing on at power up.