Part Number: SM320F28335-EP Tool/software: While working with DSP F28335 board I have faced issue regarding output computation. I was doing Grid connection, for that I have designed PLL(Phase lock loop). My switching frequency for EPWM was 10kHz, simulation time 1/20kHz and DSP clock for EPWM was 200MHz. While running the hardware I have observed that when my switching frequency is less then 10kHz the output is coming out properly but as soon as I increases the switching frequency beyond 8kHz it is unable to compute the output. The GPIO pin starts toggling at one-fourth of the simulation frequency and output is not coming out properly. What could be done to make it work? I have mentioned the data I have used in my simulation fsw=10000; %carrier fz Tinv=1/fsw; %200e-6 Tsim = Tinv*0.5; % 5e-5;%simulation time%100e-6 clk=200e6; %system clk tbprd=Tinv*clk/2; GPIO toggling at = 5Khz when EPWM block's are uncommented GPIO toggling at = 10kHz when EPWM block's ae comment out ADC start of conversion is set at EPWM A.
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