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DRV8871: Will a pulse width < 800 ns cause any problems?

Fredda
Intellectual 625 points
Part Number: DRV8871

Will a pulse width < 800 ns cause any problems, except from possibly not being detected by the DRV8871?

I'm asking since I want to simply the drive logic when ramping up the speed. As an example I'd like to start with a 10 ns pulse width and then ramp it up in increments of 10 ns to anything up to 10 us, which will be the pulse period.

/F

  • 0
    TI__Guru** 114905 points

    Hi Fredda,

    Pulse widths below 800ns do not cause problems, but may not be recognized.

    So as the device ramps up, anything below 800ns (8% at 100kHz) may be interpreted as 0% duty cycle, and anything above 9.2us (92% at 100kHz) may be interpreted as 100%.