Bobo_E
Newbie level 3
Hi
I am analysing a demo circuit for LTC4365. In the datasheet it says that in order to limit the inrush current a capacitor can be added to the gate pin. Then it also says to add a resistor to the gate pin so that the turn off time is not affected. I have done simulations with and without that resistor and it didn't make any difference. Could someone have a look at this and explain to me why there is the need for that Rgate resistor? Also does the connection order to the gate pin matter? ,ie. first Rgate (R6) and then Cgate (C2) (just like in the circuit) or can it be the other way round, ie. first Cgate and then Rgate?
LT Spice simulation is attached in the zip file.
I am analysing a demo circuit for LTC4365. In the datasheet it says that in order to limit the inrush current a capacitor can be added to the gate pin. Then it also says to add a resistor to the gate pin so that the turn off time is not affected. I have done simulations with and without that resistor and it didn't make any difference. Could someone have a look at this and explain to me why there is the need for that Rgate resistor? Also does the connection order to the gate pin matter? ,ie. first Rgate (R6) and then Cgate (C2) (just like in the circuit) or can it be the other way round, ie. first Cgate and then Rgate?
LT Spice simulation is attached in the zip file.