S32M2xx - MOSFET switching adjustment for Motor control examples

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S32M2xx - MOSFET switching adjustment for Motor control examples

S32M2xx - MOSFET switching adjustment for Motor control examples

This article is applicable to all motor control application SWs as described in the following article.
S32M2xx - Motor control use cases - NXP Community

It has been found that on some of S32M24xEVBs an overheating of the power MOSFETs may occur. This will be addressed in the new release of the Motor control example SW and will be carried out in Motor control example SW for S32M24xEVB, S32M27xEVB and S32M276SFFRD. As a solution in the current release, the following settings are recommended.

  1. Extend deadtime:
    • For S32M24xEVB, for FTM3, set Dead Time to 50 (corresponds to 625 nanoseconds):
      JoJa_3-1763040265098.png

       

    • For S32M27xEVB and S32M276SFFRD, for LCU outputs channels 0 - 5, set LUT rise filter to 75 (corresponds to 625 nanoseconds):
      JoJa_0-1763039392742.png
  2. Set faster slew rates:
    • Common for all EVBs:
      JoJa_2-1763040220621.png

       

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