hip4081a timing with drive big MOSFET?

A

Astrid

Guest
#1
Hello, I design full H bridge with hip4081a and FDBL86561_F085 300A Input capacitance 14nF, total gate charge 170nC. hip4081a have current 2,5A, if I charge gate over 5Ohm resistor and dischrage over diode will be i.e
Turn-On time 200ns
Turn-Off time 350ns

Where is the problém?
Internal Turn-On delay with 250k ohm resistor have dead time only 110ns.

If I use only ALI and BLI line for control , the MOSFET opens earlier, and the counterpart close completely.
it is so?
Somehow to solve it?