[DRV8711] high-frequency noise, not spinning

Hi,

I had built a PCB based on OPBS breakout board ( available at GitHub- link ), the only difference is that i replaced each CSD88537ND for two IRFZ44n. My actual setup is based on an Arduino board, with DRV8711 library (also found at GitHub - link).

That said here is my difficulties. Initially the AOCP register was being trigged, so i thought it was the higher gate charge, so i added the optional resistors to gate as datasheet recommends. After a little time cutting traces and soldering, i found that the issue has not been solved. Back to the code, found some wrong values in registers (where it should be 0x03 it was 0x11 - lol). Fine. AOCP now is not triggering anymore.

Anyways there is a high frequency noise while trying to step ( the stepper is not stepping, only noise ). Still could not find reason for that. Also, a pair of mosfets is heating a little. It is A2 OUT pair.

What would be the best values for the registers considering my setup? IRFZ44n would be fine for this application? my Rsense = 0.05ohm as specified in BOOST-DRV8711

Here are specifications:

- Stepper : dat-ak2321f8fn1-8-rev05.pdf

- IRFZ44n : IRFZ44n.pdf