Part Number:DRV8825
Hi,
Internal current control PWM frequency is 30kHz(Typ).
Is this frequency used at A phase and B phase operated with one OSC?
Or Is this frequency operated with OSCs for each phase?
-> In other words, How many does DRV8825 have OSC?
We wants to know whether chopping frequency is synchronized or not.
Customer has a noise sound issue from motor by phase excitation.
If DRV8825 has one OSC, I think that this cause is by fluctuations of chopping frequency.
Best regards,
Shimizu