Hi team,
My customer use F28033 in their LLC power supply.
They set the software frequency limit to 70kHz, but in some special situation the real EPWM output frequency is lower 70kHz to minmax 50kHz.
Customer want to identify the reason cause this issue, Is there a possibility that the DSP clock is abnormal due to the interference of the external crystal oscillator?
They want to grab GPIO18 (XCLKOUT) while grabbing the abnormal operating frequency to verify whether the abnormal wave is caused by the abnormal SYSCLK. Is this method feasible?
What's your advices in this case?
Looking forward to your reply!
Thank you so much!