DRV8323 custom driver review/help request

[lexan253]

Hello!

I needed high current board for FOC applications, while Im waiting for SimpleFOCDrive I’ve designed custom board based on SimpleFOCDrive.
I’ve replaced some elements with those that I could get faster:
DRV8320 → DRV8323
BSZ0904NSI → NCE3095K (I’ve tried to get the most similar MOSFET and make some changes in the initial driver configuration to fit difference between these mosfets)

The datasheets for these elements:

DRV8323

NCE3095K

Schematics for my board:

I’ve also checked other topics about DRV8323 and schematics there look quite the same (or at least close enough)

But now I’m testing my board and it isnt working (simple driver_standalone test from simplefoc lib to get constant voltage on the phases).
I’ve manufactured it myself and it turned out a quite messy, but I checked connections with multimeter and it appears to be fine. Although I cant really confirm if DRV connected to all the pads as it should because I cant reach chip pads.

Anyway, I would greatly appreciate if somebody could give me any tips on finding the problem.
Right now main suspects to me are:

1. Incorrect mosfets
2. Bad connection of the DRV microchip to the pads
3. Mistakes in schematics

[lexan253]

Also here is my layout for driver. Image cropped cuz nothing important is down there, only headers and encoder

[dekutree64]

I use a cheap USB microscope to inspect QFN solder joints.

Usually there will also be stray solder paste balls all over that are invisible to the naked eye, so don’t use lead paste or they’ll contaminate your house. With lead-free, you can flood it with alcohol and scrub with a toothbrush to clean it up, and gently prod any stubborn ones with an x-acto knife. But brushing scatters them around the room, so definitely don’t do it with lead.