topic Re: S32K1 Spread Spectrum in S32K

S32K1 Spread Spectrum

mcmackin — Thu, 13 Jun 2024 20:08:23 GMT

Im using a FS32K142WAT0WLFT and I'd like to understand how to enable spread spectrum. I specifically need this to effect the FTM module for motor control but see it's most often done at the PLL level. I'm not able to find a way to enable this function within the design studio.

Re: S32K1 Spread Spectrum

danielmartynek — Fri, 14 Jun 2024 11:45:52 GMT

Hi @mcmackin,

The SPLL does not support modulation.

But the FTM supports FTM Output Modulation and Dithering

Do you use RTD or SDK?

Regards,

Daniel

Re: S32K1 Spread Spectrum

mcmackin — Mon, 17 Jun 2024 17:37:22 GMT

We are using SDK, and using FTM0 for motor drive.

Re: S32K1 Spread Spectrum

danielmartynek — Wed, 19 Jun 2024 08:46:12 GMT

Hi @mcmackin,

There are API such as FTM_DRV_UpdatePwmPeriodDither().

Refer to S32K1xx Reference Manual for more datails about the feature.

Regards,

Daniel