Vaporized driver-to-mosfet...

[Externet]

Hello all.
1.- Mosfet driver integrated circuit 2EDN7524AF at data sheet paragraph 4.4 features 5 Amperes. If the intended driving is a mosfet gate; why such high current capability ?
Data sheet is ----> https://www.infineon.com/dgdl/Infin...N.pdf?fileId=5546d462525dbac40152abcc7dbb1727

2.- These ICs vaporized along with other components BSC026N08NS and STTH8R06G plus a few other on an inverter circuitry with unobtanium schematic, bringing chances of repair to near zero. Cannot tell which component or event caused the sequential destruction of which, but seems a chain of actions, one failure causing others...

3.- What suggested actions would you take to attempt conscious repair of the circuitry ? Inverter is Delta H6; true orphan with zero support. 99% of the unit shows pristine conditions and been in operation 8 months behaving well.
Example of damage: pictures 3 and 4 are almost the same as in my equal unit ----> https://www.ebay.com/itm/224929171877?hash=item345ed2c9a5:g:Xz8AAOSwQY1iEPju

 

[danadakk]

The high currents are becuse a MOSFET input is a very high C load and
designs are trying to switch fast to keep MOSFET out of linear region where
it developes a lot of I^2 x Rds losses.

https://www.ti.com/lit/an/slyt664/slyt664.pdf

https://www.vishay.com/docs/73217/an608a.pdf

Capacitor

Q = C x V
I = C x dV / dT here you want dT very small, and C is large, so I must be large.

Reconstruct the schematic by hand.....?



Regards, Dana.