I have a question regarding the usefulness of the ePWM chopper submodule. I have an application that benefits from the use of an extremely high PWM frequency, so the chopper would help out immensely. However, I've noticed that the minimum chopper frequency is 1.56MHz according to the user reference guide (refer to page 749 of the spruh22c document, Concerto F28M35x Technical Reference Manual). The maximum switching frequency of the DRV8312 driver IC is 500kHz. Is there a way of modulating the epwm chopper down below 500kHz? Otherwise, it seems that the chopper cannot be used with the DRV8312 driver.
↧