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TMS320F28377D: I have a question about synchronization between EPWM modules in high-resolution period mode.

Sang-il Nam
Expert 2430 points
Part Number: TMS320F28377D
Other Parts Discussed in Thread: C2000WARE

Hi,

I have seen the following instructions in the TRM document of the TMS320F28377D chip.

According to it, it seems that phase control by synchronization between EPWM modules is not available in high-resolution period mode.

Am I right?

Thanks in advance.

  • 0
    TI__Mastermind 24095 points
    Hi,
    There is an example code in C2000Ware located at <path_to_C2000Ware>\device_support\f2837xd\examples\cpu1\hrpwm_deadband_sfo_v8.
    This example implements HRPRD (hi-res period), HRDUTY (duty), HRPHS (phase shift) and HRDB (dead-band) simultaneously.
    You can just refer to the Phase shift portion of the code - since that is of interest to you.
    This example is a way of working around in software - to avoid the above mentioned jitter, otherwise you would possibly see 1-2 jitter in this case.
  • 0 in reply to Subrahmanya
    Expert 2430 points
    Thank you for your quick reply.