• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 30 subscribers
  • Views 66 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

MCF8329A:I would like to ask about the operation of the spread spectrum technique.

hyeonwoo Yu
Prodigy 20 points
Part Number: MCF8329A

Tool/software:

Hello,

I would like to ask about the operation of the spread spectrum technique.

According to the datasheet, it appears that SSM (Spread Spectrum Modulation) is used to improve EMI performance. I am curious about how the frequency range is defined, and whether I can configure or adjust the frequency bandwidth myself.

Also, in this context, does the "frequency" and "SSM" refer to the gate driver signals — specifically, the switching frequency of the external MOSFETs connected to the driver?

Thank you in advance for your support.

  • 0
    TI__Expert 3345 points

    HI,

    Sorry for the delay in response.

    SSM is applied for the device CPU clock. User can only enable/disable the SSM feature by configuring SPREAD_SPECTRUM_MODULATION_DIS bit available in PERI_CONFIG1 register, frequency spread is not configurable.

    Switching frequency of external MOSFET will not get affected with SSM being enabled or disabled condition.

    Thanks,

    Dhinesh