DRV8320: Changing PWM frequency and motor speed

Part Number:DRV8320

Hi

When Changing PWM frequency 10KHz to 20KHz with setting motor speed as 100% motor speed will change as to be increased.

Regarding to GUI parameter : 

Set Motor Speed : 100%

PWM switching frequency : 10KHz -> 20KHz

Current Motor Speed : 1605 rpm -> 3225 rpm

Is it normal operation?

BestRegards