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SM320F28335-EP: Need something with Higher Switching Frequency for SiC

David C
Expert 3350 points
Part Number: SM320F28335-EP
Other Parts Discussed in Thread: TMS320F28377D-EP, TMS320C28346

Hello,

We have been using TI F2812 or TI F28335 in all our motor drive designs. Now the SiC power switch is the trend in the motor drive industry.  SiC allows us to switch at  much higher frequency (at least two times) . But this imposes more stringent requirement on the horse power (speed) of the micro-controller.

We would like to know what more powerful processors TI offers with -55 to 125C temperature rating. Otherwise we will be forced to switch to ARM or FPGA solutions.

Regards,

David

  • 0
    TI__Guru 62930 points
    David, not sure if this completely meets their needs, but we do have the TMS320F28377D-EP released. It is dual core 200Mhz.
    If there is another commercial device that meets needs, let us know and we can consider for roadmap release.

    If this answers your question, please click "Verify it as the answer"
    Regards,
    Wade
  • 0 in reply to Wade Vonbergen
    TI__Expert 3350 points
    Almost all of our projects are currently running on a single core DSP. The 200Mhz will improve our current 150Mhz processor. The ideal candidate would be > 200 Hz single core and backward compatible with 28335 or 2812.

    I'm also not familiar with dual core processors. Are the software written for 28335 compatible with the 28377? Do we need to re-write the software to take advantage of dual processor?
    What is the purpose of dual processor? To control two motors? The question is how we benefit from dual core when we just need to control one motor?

    Aside from that, I noticed that the 176 pin 28377 is not compatible to 176 pin 28355.
  • 0 in reply to David C
    TI__Guru 62930 points
    Unfortunately, the 28377-EP is the highest performance C2000 released to -55 to 125c.
    The 28335-EP is the highest performance EP device in the same pinout family.

    There is a TMS320C28346 that is similar and operates to 300Mhz. Unfortunately, it is not pinout compatible, and not released as an EP device with extended temperature.

    I think an expert in motor control needs to address the 28335 to 28377 software port and advantages possible with 2 cores. I suggest posting to the C2000 forum for motor expert input. I can help with this if needed.

    Regards,
    Wade