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

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.

(Please visit the site to view this file)(Please visit the site to view this file)

May I know the reason ?

3) I am also seeing inconsistent output rise time with short PWM pulse width. Please refer to attached file:(Please visit the site to view this file)

May I know the reason?