Hi !
I'm trying to design a buck converter using the TPS40170 ans the J/K method described on the datasheet (page 33)
I've already looked at the post named " J/K Selection Method for MOSFET Selection " but I'm not able to applicate the method with values given in the datasheet of the TPS40170.
For the High Side MOSFET :
Values I use :
Vin = 24V
Idrive = (Vgate - Vth)/(Rdrive + Rgate)
with Vgate = 8V, Vth = ? (MOSFET not already choosen...), Rdrive = 2,64 ohms, Rgate = ? (MOSFET not already choosen...)
Qg/ Qsw = 2
Vdrive = 12V
Fsw = 300kHz
Vout = 5V
Ipp = ?
If you can help me to find Ipp, Vth and Rgate values (or the method to find them) ...
Thanks You !
Anthony