Part Number:UCD3138064
i want to design a buck converter with 200kHz switching frequency . i hope the bandwidth of close loop get up to 30KHz, i konw there is a pure lag :e^(-j*w*Tdpwm), so i think i can use oversample X8,but there is useless.
So do you know how to use the oversample? Whats wrong??? the pure lag is fixed by the switching frequecy? how can operate the system with no pure lag in my foucs bandwidth？
With best regards