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Observation on DRV8701EVM Performance with high PWM frequency and low duty cycle

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HI,

I have few question regarding DRV8701:

1) What is the minimum allowable operating PWM pulse width for DRV8701?

2) I am using 64kHz PWM frequency in my application. With DRV8701EVM (Eval-board), I am seeing in consistent output  (even missing pulse ) if the PWM pulse width is shorter than 8us. Please refer to attached file ( WAVEFORM-1.xlsx and Missing Pulse.xlsx) for detail.

[View:/cfs-file/__key/communityserver-discussions-components-files/38/WAVEFORM_2D00_1.xlsx:1230:0][View:/cfs-file/__key/communityserver-discussions-components-files/38/Missing-pulse.xlsx:1230:0]

May I know the reason ?

3) I am also seeing inconsistent output rise time with short PWM pulse width. Please refer to attached file:[View:/cfs-file/__key/communityserver-discussions-components-files/38/Inconsistent-Output-Rise-time.xlsx:1230:0]

May I know the reason?


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