MC33937 Zero Crossing on PhaseX outputs

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MC33937 Zero Crossing on PhaseX outputs

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graham3
Contributor I

I am looking to use the MC33937 on a new project, and while going through the datasheet I noticed the PhaseX outputs from a comparator (50% of Vsup).

The datasheet says that this use used for fault detection (shorts), however can these outputs not be simply used as a zero crossing point for sensorless operation?

Thanks

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guoweisun
NXP TechSupport
NXP TechSupport

Hi Graham

Inside of  PhaseX output circiut is simliar with zero cross detective circuit,you can use it!

Thanks!

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